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altsig.ai · Bhāratavarṣa series

Vedic chanting across 5,000 years

Explore a year-by-year model of daily Vedic recitation from Afghanistan to Malaysia, with historical events and the evidence behind its assumptions.

Model estimates, not measurements. Shading shows assumed uncertainty, not a confidence interval; shortfall allocations are not measured causal effects. Read the method.

Estimated Vedic recitation from 3000 BCE to 2026 CE: the model starts at 27,515.40 and ends at 1,795,208.76 sessions per day.

Estimated Vedic recitation from 3000 BCE to 2026 CE: the model starts at 27,515.40 and ends at 1,795,208.76 sessions per day.

Show data table: Estimated Vedic recitation
Estimated Vedic recitation — plotted values
Full timeline overview from 3000 BCE to 2026 CE: the model starts at 27,515.40 and ends at 1,795,208.76 sessions per day.

Full timeline overview from 3000 BCE to 2026 CE: the model starts at 27,515.40 and ends at 1,795,208.76 sessions per day.

Show data table: Full timeline overview
Full timeline overview — plotted values

Scroll normally over the chart. Turn on “Interact with chart” to wheel or pinch to zoom (decades → years), drag to pan, drag the minimap brush or double-click to reset. Ctrl/Cmd + wheel also zooms. Zoom, pan and reset buttons work with the keyboard; Escape turns interaction off.

decade view
Population (M)
Population from 3000 BCE to 2026 CE: the model starts at 12.00 and ends at 2,295.00 million people.

Population from 3000 BCE to 2026 CE: the model starts at 12.00 and ends at 2,295.00 million people.

Show data table: Population
Population — plotted values
Dharmic fold (%)
Dharmic fold from 3000 BCE to 2026 CE: the model starts at 88.58 and ends at 47.49 % of population.

Dharmic fold from 3000 BCE to 2026 CE: the model starts at 88.58 and ends at 47.49 % of population.

Show data table: Dharmic fold
Dharmic fold — plotted values
Active reciters (M)
Active reciters from 3000 BCE to 2026 CE: the model starts at 0.01 and ends at 1.04 million people.

Active reciters from 3000 BCE to 2026 CE: the model starts at 0.01 and ends at 1.04 million people.

Show data table: Active reciters
Active reciters — plotted values
Assumed sessions / reciter / yr
Assumed sessions per reciter from 3000 BCE to 2026 CE: the model starts at 850.00 and ends at 620.00 sessions per reciter per year before regional multipliers.

Assumed sessions per reciter from 3000 BCE to 2026 CE: the model starts at 850.00 and ends at 620.00 sessions per reciter per year before regional multipliers.

Show data table: Assumed sessions per reciter
Assumed sessions per reciter — plotted values

Click a flag ⚑ in interaction mode to read its event card, or browse all events. ▼ red flags are reductions, green are revivals, gray are context.

Browse chart event links

वेदपाठः in Bhāratavarṣa

उत्तरं यत्समुद्रस्य हिमाद्रेश्चैव दक्षिणम् ।
वर्षं तद्भारतं नाम भारती यत्र सन्ततिः ॥
viṣṇu purāṇa 2.3.1 — "north of the ocean, south of the snowy mountains: that land is Bhārata"

How many Vedic recitation sessions happen each day, from the Kubhā (Kabul) to Yavadvīpa (Java–Malaya) — estimated bottom-up for every year of the last 5,000. Zoom from decades into single years; the flags are the events that bent the curve.

A model, not a measurement. No census of chanting exists before the modern era. This page estimates by tarka-pramāṇa: population × dharmic fraction × reciter density × sessions per reciter, region by region, with every anchor, rationale and uncertainty band exposed below for critique. The shaded band divides and multiplies the central estimate by the year’s chosen uncertainty factor; it is not a statistical confidence interval. Shortfall allocations follow the model’s chosen assumptions; they are not measured causal effects.
Est. daily sessions · 2026
1.8M/day
central model ≈ 656M per year; assumed model range 486M–885M per year
Sessions / modeled potential
3.4%
modeled counterfactual ≈ 53.6M sessions/day
Peak / 2026 per resident
23×
from ≈ 6.6 sessions per resident-year around 500 BCE to ≈ 0.29 in 2026
Absolute peak year
1899 CE
≈ 2.2M sessions/day — population growth carried the total up even as per-capita practice fell; Partition and the land reforms bent it down
Estimated active reciters · 2026
1.0M
people who still chant near-daily (sandhya, pathashala, temple, havan); range roughly 581k–1.9M
Modeled regional remnants
Gandhara and
Suvarnabhumi
Both retain positive modeled recitation; no extinction count is calculated.

The events behind the kinks

Every flag on the chart is one of these. Reduction events bend the curve down, revivals bend it back, context events explain the era. Click a flag on the chart to jump here.

1900 BCEReduction

Sarasvati system fails

The Ghaggar-Hakra (identified by many with the Vedic Sarasvati, RV 7.95's 'giribhya a samudrat') loses its perennial flow; Harappan de-urbanisation. Population and ritual economy shift eastward toward the Yamuna-Ganga.

1200 BCERevival

Srauta zenith

Peak of the srauta ritual economy in the Sapta-Sindhu and Kuru lands — the model's highest per-capita chanting intensity. RV 10.75 sings the rivers from the Kubha (Kabul) to the Ganga.

1000 BCERevival

Kuru samhita redaction

The Kuru state fixes the Rigveda samhita's received text; the sakha system becomes the tradition's error-correcting transmission code.

600 BCEContext

Upanishadic turn

The Aranyaka-Upanishad movement internalises the sacrifice. Recitation continues, but the srauta apparatus begins its long simplification.

527 BCEReduction

Mahavira; then the Buddha

The sramana revolt rejects Vedic sacrifice outright ('na hi tena jata-brahmano hoti'). Over the next five centuries a large minority of the fold steps out of the srauta-svadhyaya duty — the model's first great wedge.

260 BCEReduction

Ashoka after Kalinga

Imperial patronage pivots to the sangha; Ashoka's edicts discourage animal sacrifice. Rock Edict I bans the festival slaughter; brahmin ritualists lose the great royal yajnas for a century.

185 BCERevival

Pushyamitra's asvamedha

The Shunga founder revives the horse sacrifice (attested by Patanjali, who says 'iha pushyamitram yajayamah'). Vedic ritual returns to court.

78 CEContext

Kushan cosmopolis

Gandhara becomes the Buddhist workshop of Asia; the north-west's reciter share falls even as trade wealth funds all religions.

320 CERevival

Gupta restoration

Samudragupta's asvamedha coins; land-grant (agrahara) economy endows srotriya settlements across the north. Faxian (c. 400) sees a prosperous dharmic order. The model's classical maximum.

400 CERevival

Mulavarman's yupas, Borneo

Sanskrit yupa inscriptions of Kutai (E. Borneo) record Vedic sacrificial posts and a 'bahusuvarnaka' rite — the hard eastern edge of the chanting map, 4,000 km from Kashi. Funan, Champa and Java courts keep purohitas.

455 CEReduction

Huna irruptions

Mihirakula's wars wreck the north-west's monastic and agrahara economy alike; Gandhara never fully recovers.

630 CEContext

Xuanzang's audit

The pilgrim counts monasteries and 'deva temples' kingdom by kingdom — and describes the four Vedas and brahmin recitation discipline in detail. His census-like account anchors the mid-classical estimates.

712 CEReduction

Sindh falls

Muhammad bin Qasim takes Sindh and Multan. The Chachnama records the terms: temples spared as 'like the churches of the Christians', jizya imposed. The first durable detachment of a subcontinental region from the fold.

788 CERevival

Sankara's digvijaya

Adi Sankara (trad. 788-820) re-organises the smarta order, founds the cardinal mathas, debates the sramana schools — the within-fold counter-reformation that keeps the Veda at the centre of doctrine.

850 CERevival

Chola agrahara engine

Chola, Pallava and Pandya copper plates endow hundreds of brahmadeya villages with ghatikas teaching the Vedas; the south becomes the tradition's deep reservoir — visible in the model's southern reciter density peak.

1000 CEReduction

Mahmud of Ghazni

Seventeen campaigns (1000-1027): Somnath, Mathura, Kanauj. Al-Biruni, who travelled with the armies, writes: 'Mahmud utterly ruined the prosperity of the country... Hindu sciences have retired far away from those parts of the country conquered by us.' The north-west's reciter economy collapses.

1192 CEReduction

Tarain & the Sultanate

Ghurid victory at Tarain; Delhi Sultanate follows (1206). Nalanda and Vikramashila burned (~1193-1203, Tabaqat-i-Nasiri). Temple-and-agrahara patronage collapses across Aryavarta; reciter lineages migrate south. The model's steepest per-capita fall.

1323 CEReduction

Kakatiya fall; raids reach Madurai

Malik Kafur (1311) and the Tughluq conquests carry the patronage collapse briefly into the far south; the Madurai Sultanate (1335-78) interrupts Tamilakam's temple economy.

1336 CERevival

Vijayanagara founded

Harihara and Bukka (guided, tradition says, by Vidyaranya) found the empire 'for the protection of dharma'. At its court Sayana compiles the complete Veda-bhashya (c. 1360-87) — the greatest recitation-preservation project of the medieval world.

1389 CEReduction

Sikandar Butshikan in Kashmir

Kashmir — Sarada-desa, a Veda and sastra powerhouse — loses its temples and most of its pandit economy; Jonaraja's chronicle records the exodus.

1414 CEReduction

Malacca converts

The entrepot's sultanate tips maritime SE Asia: Sumatra, Java's coasts, then the interior. Majapahit fades (c. 1527); the rsi-clergy retreat to Bali. Suvarnabhumi's brahminical thread narrows to one island.

1469 CEContext

Bhakti high tide

Kabir, Nanak (b. 1469), Chaitanya (b. 1486), Mirabai, Tulsidas: the bhakti wave. Dharma is saved and deepened — but nama-japa and kirtana, open to all, displace Vedic recitation as the centre of religious energy. The model books this as within-fold intensity loss, not exit.

1565 CEReduction

Talikota

Vijayanagara's army destroyed; Hampi sacked for months. Sewell: 'never perhaps in the history of the world has such havoc been wrought so suddenly.' The south's shield breaks; Nayaka successors carry a reduced patronage forward.

1669 CEReduction

Aurangzeb's temple orders

Kashi Vishvanath (1669) and Keshava Deva Mathura (1670) demolished; jizya reimposed 1679. Maasir-i-Alamgiri records the orders 'to demolish the schools and temples of the infidels and put down their teaching'.

1718 CERevival

Maratha & Jat resurgence

Maratha protection re-endows Kashi, Nashik, and the pilgrimage economy; Ahilyabai Holkar rebuilds Vishvanath (1780). Banaras pandit lineages thicken again — the 18th-century plateau in the model.

1757 CEContext

Plassey; Company rule

Revenue farming and famine (1770: a third of Bengal dies) begin dissolving the endowment economy that fed hereditary reciters.

1835 CEReduction

Macaulay's Minute

'A single shelf of a good European library was worth the whole native literature of India and Arabia.' English becomes the ladder of livelihood; within two generations the brightest brahmin boys read law, not the Veda. The modern-secular wedge opens here.

1875 CERevival

Arya Samaj: 'back to the Veda'

Dayananda's movement puts havan and Veda-patha into lay Hindu life across Punjab and the Hindi belt; the DAV network prints and teaches the samhitas. A genuine counter-trend inside the modern era.

1893 CERevival

Vivekananda at Chicago

Vedanta goes global; prestige returns to Sanskrit learning even as daily ritual keeps declining — bhakti and jnana rise, karma-kanda falls.

1947 CEReduction

Partition

The Indus basin and East Bengal — a third of the subcontinent's people — pass to states where the fold is a small minority. Reciter lineages of Sindh, West Punjab and East Bengal scatter as refugees.

1951 CEReduction

Land reforms & HR&CE

Zamindari abolition and temple-endowment acts end the agrahara/inam economy that had fed hereditary reciters for 1,500 years. Vaidika households urbanise; sons take salaried work. The quiet, biggest modern reducer.

1956 CEContext

Ambedkarite conversion

Mass neo-Buddhist conversion in Maharashtra — a moral indictment of caste from within the civilisation; a small wedge in the model, a large one in conscience.

1975 CEContext

Agnicayana filmed at Panjal

Kerala Nambudiris perform the 12-day atiratra-agnicayana; Frits Staal's 'AGNI' documents the oldest surviving ritual on earth — proof of unbroken transmission and of how few can still do it.

2003 CERevival

UNESCO: Vedic chanting

Proclaimed a Masterpiece of the Oral and Intangible Heritage of Humanity (inscribed 2008). State and matha pathashala funding grows; TTD, Kanchi and Sringeri networks expand — the late-model uptick in the south.

2014 CERevival

Revival funding era

Veda-pathashala scholarships, temple corpus funds, and digital archives (recordings of every sakha) expand. Absolute chantations rise on sheer population; per-capita fidelity stays near its historic low.

Pramāṇa — the evidence trail

The model's anchors are not conjured. These are the granthas, inscriptions and eyewitness accounts behind the extent of Bhāratavarṣa (Afghanistan to Malaysia), the vitality of recitation era by era, the forces of reduction, and the counter-currents.

Extent of Bhāratavarṣa 10 sources

What the granthas, inscriptions and foreign geographers say the land IS — from the Kubhā (Kabul) to Yavadvīpa (Java).

c. 400 BCE–400 CE
Viṣṇu Purāṇa 2.3.1

The charter definition of Bhāratavarṣa

उत्तरं यत्समुद्रस्य हिमाद्रेश्चैव दक्षिणम् । वर्षं तद्भारतं नाम भारती यत्र सन्ततिः ॥

The land north of the ocean and south of the snowy mountains is called Bhārata; there dwell the descendants of Bharata.

Bearing on the model: The verse recurs almost verbatim in the Vāyu, Mārkaṇḍeya and Brahmāṇḍa Purāṇas — a shared, memorised definition of the land itself.

c. 1200–1000 BCE
Ṛgveda 10.75 (Nadī-stuti)

The rivers of the west bank: Afghanistan inside the Vedic map

तृष्टामया प्रथमं यातवे सजूः सुसर्त्वा रसया श्वेत्या त्या । त्वं सिन्धो कुभया गोमतीं क्रुमुं मेहत्न्वा सरथं याभिरीयसे ॥

O Sindhu, joined first with the Tṛṣṭāmā to flow, with the Susartu, the Rasā, the Śvetyā — thou with the Kubhā (Kabul), the Gomatī (Gomal), the Krumu (Kurram), the Mehatnu, on one chariot with them thou speedest.

Bearing on the model: The hymn's western rivers are the Kabul, Kurram, Gomal and Swat (Suvāstu, RV 8.19.37) — the Rigvedic horizon runs deep into today's Afghanistan.

c. 900–600 BCE
Śatapatha Brāhmaṇa 1.4.1.14–17

Videgha Māthava crosses the Sadānīrā — the eastward march of the fire

Agni Vaiśvānara went burning along this earth from the Sarasvatī eastward; Māthava the Videgha followed; the Sadānīrā (Gandak) was its boundary — brahmins now dwell east of it too.

Bearing on the model: The tradition's own memory of Vedicisation as a moving frontier: the model's region-by-region onset of reciter density follows exactly this shape.

c. 200 BCE–200 CE
Manusmṛti 2.17–22

Brahmāvarta and Āryāvarta graded by ritual purity

आसमुद्रात्तु वै पूर्वादासमुद्रात्तु पश्चिमात् । तयोरेवान्तरं गिर्योरार्यावर्तं विदुर्बुधाः ॥

From the eastern to the western ocean, between the two mountain ranges — that the wise know as Āryāvarta.

Bearing on the model: Manu grades the land by where the ritual order runs — the text itself models chanting density by geography, as this page does.

c. 400 BCE–400 CE
Mahābhārata, Bhīṣma Parva 9 (Bhūmi Parva)

The peoples of Bhāratavarṣa, Gandhāra and Kāmboja included

Sañjaya recites the janapadas of Bhāratavarṣa to Dhṛtarāṣṭra: Kuru, Pañcāla, Sindhu-Sauvīra, Gandhāra, Kāmboja, Kāśmīra, Aṅga, Vaṅga, Kaliṅga, the Draviḍas, Keralas… — the full sweep from the Hindu Kush to the southern sea.

Bearing on the model: The epic's own gazetteer: the six model regions are a compression of this list.

2nd c. BCE
Hāthīgumphā inscription of Khāravela, Odisha

'Bharadhavasa' in stone

Khāravela's Prakrit inscription speaks of his campaigns across Bharadhavasa (Bhāratavarṣa) — among the earliest epigraphic uses of the name for the subcontinent as a whole.

Bearing on the model: The name of the land is not a modern construction; kings carved it.

c. 5th c. BCE onward
Jātakas; Milindapañha; Rāmāyaṇa 4.40

Suvarṇabhūmi and Yavadvīpa: the far shore already on the map

यवद्वीपमतिक्रम्य शिशिरो नाम पर्वतः ।

Sugrīva directs the search for Sītā: '…having passed Yavadvīpa (Java), the mountain named Śiśira…' — and merchants of the Jātakas sail again and again to Suvarṇabhūmi, the Land of Gold.

Bearing on the model: SE Asia sits inside the epic-Puranic horizon of Bhāratavarṣa's ninefold extent (the Purāṇas' navadvīpa scheme names Indradvīpa etc. as its parts).

c. 400 CE
Kutai yūpa inscriptions, E. Borneo (Mūlavarman)

Vedic sacrificial posts 4,000 km east of Kāśī

Seven Sanskrit yūpa (sacrificial-post) inscriptions record king Mūlavarman's gifts at the 'most sacred field of Vaprakeśvara' — including a bahusuvarṇaka rite — 'this yūpa was made by the brahmins who came hither'.

Bearing on the model: The oldest Sanskrit inscriptions of Indonesia are RECORDS OF VEDIC SACRIFICE. The model's Suvarnabhumi reciter series is anchored on them.

3rd–8th c. CE
Book of Liang (Funan); Vo Cạnh & Mỹ Sơn steles (Champa); Bujang Valley, Kedah

Brahmin courts from the Mekong to the Malay peninsula

Chinese annals record the brahmin Kauṇḍinya ruling Funan 'changing its institutions to those of India'; Champa's Sanskrit steles invoke Śiva; Kedah's Bujang valley preserves dozens of temple bases on the Malaysian coast.

Bearing on the model: The 'Afghanistan to Malaysia' definition the user gives is the historically attested Sanskrit cosmopolis, not a modern invention.

c. 1030 CE
Al-Bīrūnī, Kitāb taḥqīq mā li-l-Hind

A hostile-witness geography of the dharmic world

Al-Bīrūnī maps the land from Kabul (whose Shahi kings, he records, were Hindu, once Turk, claiming Kanauj descent) to the peninsula, and describes the four Vedas, their śākhās, and the rule that the Veda is preserved by recitation, 'not committed to writing' — lately written down by Vasukra of Kashmir, he notes, against custom.

Bearing on the model: An outside auditor confirms both the extent of the fold and the primacy of oral chanting at 1030 CE.

Vitality of recitation 10 sources

Eyewitness attestations of the chanting economy at work — these anchor the model's reciter-density estimates.

c. 300 BCE
Megasthenes, Indika (via Strabo XV)

The Brachmanes as a census category

The Greek ambassador to Pāṭaliputra lists the 'philosophoi' first among the seven classes: Brachmanes who 'from conception onward' live under mantra — hymns sung over the unborn child, decades of disciplined study.

Bearing on the model: Earliest foreign attestation that reciters were a recognised, countable stratum — the model's v (reciter density) is a real demographic object.

c. 150 BCE
Patañjali, Mahābhāṣya (paspaśā)

Nine 'ways of the word' and the economy of recitation

Patañjali discusses reciters mastering pada, krama and the vikṛti-pāṭhas, and names the fourteen-fold learning; grammar exists, he says, to guard the Veda ('rakṣā') — a whole profession of error-correction.

Bearing on the model: By 150 BCE the redundancy-coded recitation system (later jaṭā, ghana) is mature — the transmission technology the dashboard's continuity rests on.

c. 100–300 CE
Sangam corpus (Puṟanāṉūṟu 6; Patiṟṟuppattu)

'Antaṇar of the four Vedas' in the Tamil far south

Sangam kings are praised for protecting 'the antaṇar (brahmins) of the four Vedas' and for kindling the three fires; Karikāla and the Cēra kings perform Vedic sacrifices with them.

Bearing on the model: Anchors the southern reciter series' early rise — Vedic recitation is attested in Tamilakam by the turn of the era.

399–414 CE
Faxian, Record of Buddhistic Kingdoms

A Buddhist pilgrim's prosperous brahmin India

Faxian records a Madhyadeśa of charitable houses, festivals and flourishing brahmin and Buddhist establishments side by side under the Guptas.

Bearing on the model: The model's classical plateau: both the sangha wedge and a strong reciter economy at once.

629–645 CE
Xuanzang, Xiyu ji (Great Tang Records)

The four Vedas described, kingdom by kingdom

Xuanzang describes the brahmins' education: 'the four Veda treatises… they teach them orally from master to master, not writing them down', with study beginning at seven and mastery near thirty; he counts deva-temples beside monasteries in over a hundred kingdoms from Kāpiśī (Afghanistan) to Kāñcī.

Bearing on the model: A near-census at 630 CE: recitation universal, but Gandhāra's viharas already in ruins — both curves of the dashboard visible to one traveller.

9th–13th c. CE
Chola & Pallava copper plates (e.g. Anbil, Karandai, Tiruvālangāḍu)

The agrahāra engine, notarised

Royal grants endow whole villages on named brahmins 'versed in the Vedas and Vedāṅgas' — the Karandai plates alone transfer a village to over a thousand śrotriyas, each listed with his gotra and śākhā.

Bearing on the model: Hard numbers for reciter density at the southern medieval peak — the model's v ≈ 1.1% of the dharmic population there is read off this endowment economy.

1595 CE
Abu'l-Faẓl, Ā'īn-i-Akbarī (Book III)

A Mughal minister catalogues the Veda

The Ā'īn surveys 'the learning of the Hindus': the four Vedas with their subdivisions, the six darśanas, and the centres of study; Akbar's court translated the epics while Banaras and Nadia taught on.

Bearing on the model: Even at the Mughal zenith the recitation economy is intact enough to be systematically catalogued by the imperial secretariat.

1665–1668 CE
François Bernier, Travels in the Mogul Empire

Banaras, 'the Athens of India'

'The town of Benares is the general school of the gentiles… as Athens was of Greece'; Bernier describes pandits teaching pupils gratis, supported by endowments and gifts, memorising their sciences.

Bearing on the model: The 17th-century plateau in the north's reciter series is an eyewitness datum, not a guess.

1975 CE
Frits Staal, AGNI: The Vedic Ritual of the Fire Altar

The atirātra-agnicayana performed and filmed at Panjal, Kerala

Nambudiri śrautins perform the 12-day rite complete — 'the oldest surviving ritual of mankind' — while Staal's team records every mantra; only a handful of families could still stage it.

Bearing on the model: Both facts at once: transmission UNBROKEN across ~3,000 years, and the practising base reduced to a remnant — the dashboard's two headline curves.

2003/2008 CE
UNESCO Intangible Cultural Heritage list

'The Tradition of Vedic Chanting' inscribed for humanity

UNESCO's citation praises the ganita-like error-correcting recitations (jaṭā, ghana) and warns that only a small number of fully trained reciters remain.

Bearing on the model: The modern low-water attestation the 2026 endpoint is calibrated against.

Accounts of reduction 10 sources

Primary sources for each force that shrank the practice: conquest, conversion, patronage collapse, and the repointed ladder of livelihood.

712–13 CE
Chachnāma (Fatḥnāma-i Sind)

The first conquered province

The Persian chronicle of the Arab conquest of Sindh records the storming of Debal, the capitulations, the jizya, and the ruling that temples be treated 'like the churches of the Christians and the fire-temples of the Magians' — tolerated, taxed, and no longer endowed.

Bearing on the model: Onset of the Islam wedge: not instant conversion but a patronage regime-change whose slow demographic work the model spreads over nine centuries.

c. 1030 CE
Al-Bīrūnī, Kitāb al-Hind (preface)

'Hindu sciences have retired far away'

'Maḥmūd utterly ruined the prosperity of the country… the Hindus became like atoms of dust scattered in all directions… their sciences have retired far away from those parts of the country conquered by us, and have fled to places which our hand cannot yet reach, to Kashmir, Benares and other places.'

Bearing on the model: A participant's own audit of the north-western collapse — the model's steep Gandhāra–Sindhu reciter fall at 1000–1200 quotes him almost literally.

c. 1193–1206 CE
Minhāj-i-Sirāj, Ṭabaqāt-i-Nāṣirī

The burning of the great libraries of recitation's rival

Of Bakhtiyār Khaljī's raid on the great monastery (identified with Odantapurī/Nālandā): 'the greater number of the inhabitants were brahmins with shaven heads. They were put to death. Large numbers of books were found… but none could explain their contents.'

Bearing on the model: The beheading of institutional Buddhism books the śramaṇa wedge's collapse into the Islam wedge in the east — and warns what un-endowed knowledge systems do when their carriers are killed.

c. 1389–1413 CE
Jonarāja, Dvitīyā Rājataraṅgiṇī

Śāradā-deśa loses its pandits

The Kashmiri court poet records Sikandar 'Butshikan' (idol-breaker): temples felled, the sciences dispersed, brahmins fleeing or converting; 'Kashmir became almost like the country of the mlecchas'.

Bearing on the model: Kashmir had been a Veda-śāstra powerhouse (Al-Bīrūnī's refuge!); its loss removes a disproportionate share of high-end reciters.

1565 CE
Robert Sewell, A Forgotten Empire (on Talikota)

The southern shield breaks

'With fire and sword, with crowbars and axes, they carried on day after day their work of destruction. Never perhaps in the history of the world has such havoc been wrought, and wrought so suddenly, on so splendid a city.'

Bearing on the model: Vijayanagara had been the recitation economy's shelter (Sāyaṇa's bhāṣya, temple endowment at scale). The model's southern series kinks here.

1669–1679 CE
Sāqī Musta'idd Khān, Ma'āsir-i-'Ālamgīrī

Orders against the schools of the infidels

'The Emperor ordered the governors of all the provinces to demolish the schools and temples of the infidels and with the utmost urgency put down the teaching and the public practice of the religion of these misbelievers.' Kāśī Viśvanātha fell in 1669; jizya returned in 1679.

Bearing on the model: The explicit targeting of TEACHING — pāṭhaśālā, not just temple — is why the model docks reciter density, not merely fold share, in this era.

1835 CE
T. B. Macaulay, Minute on Indian Education

The livelihood ladder is repointed

'A single shelf of a good European library was worth the whole native literature of India and Arabia… We must at present do our best to form a class who may be interpreters between us and the millions whom we govern.'

Bearing on the model: The modern-secular wedge's founding document: within two generations the hereditary reciter's son sits the pleader's examination instead. Colonial stipends to tols and pāṭhaśālās were simultaneously wound down.

1770–1900 CE
Famine records; W. W. Hunter, Annals of Rural Bengal

Endowment famine

The 1770 Bengal famine (Hunter: 'a third of the population') and the century of revenue settlements dissolved lākherāj and devottara grants; Buchanan's surveys find tols surviving on shrinking rent-free tenures.

Bearing on the model: Reciters were fed by land, not fees. Resumption of rent-free tenures is a direct, documented mechanism of the 19th-century reciter decline.

1300–1700 CE
Richard Eaton, The Rise of Islam and the Bengal Frontier

How the eastern delta left the fold

Eaton's study of the agrarian frontier: charismatic pīrs organised forest clearance and rice settlement in the eastern delta, where the brahminical order had always been thinnest; by the 1872 census officials were stunned to find Bengal about half Muslim.

Bearing on the model: The model's largest single conversion wedge follows Eaton's mechanism — weak prior Vedicisation, not forced mass conversion, explains the east.

1947–1972 CE
Partition & land-reform statutes; HR&CE Acts

The quiet modern reducers

Partition scatters the Sindhi, West Punjabi and East Bengali lineages; zamindari-abolition and inam-abolition acts (1950s) resume the agrahāra tenures; temple-endowment boards salary a shrinking priesthood.

Bearing on the model: The model's sharpest reciter-density fall is 1947–1975 — legislated, not conquered.

Counter-currents & revival 6 sources

What preserved the tradition through each trough — and what is growing now.

c. 1360–1387 CE
Sāyaṇa, Vedārtha-prakāśa (Vijayanagara)

The whole Veda commented, under an empire built for it

Under Bukka I and Harihara II, Sāyaṇa (with Mādhava-Vidyāraṇya) produces commentaries across the four Vedas — the largest recitation-preservation project of the medieval world, executed while the north's endowments burned.

Bearing on the model: Why the southern series holds its plateau through the Sultanate centuries.

1718–1795 CE
Maratha endowment records; Ahilyābāī's works

Re-endowment from the Deccan

Maratha power re-endows Kāśī, Prayāga, Nāsik and the southern maṭhas; Ahilyābāī Holkar rebuilds Viśvanātha (1780). The Peshwa's dakṣiṇā to Banaras pandits becomes an institution.

Bearing on the model: The 18th-century plateau before the colonial descent.

1849–1874 CE
Max Müller's editio princeps of the Ṛgveda (with Sāyaṇa)

Preservation by print — from oral monopoly to open text

The six-volume Ṛgveda with Sāyaṇa's commentary, funded by the East India Company, fixes the text in print; Indian reprints follow within decades.

Bearing on the model: Ambivalent for CHANTING: the text is now unlosable, but the economic case for the living reciter weakens — print is the modern wedge's other face.

1875 CE →
Ārya Samāj; DAV movement

'Back to the Veda' as a mass slogan

कृण्वन्तो विश्वमार्यम्

Dayānanda's movement makes havan and Veda-pāṭha a lay practice across Punjab and the Hindi belt; gurukulas (Kāṅgṛī 1902) train non-hereditary reciters for the first time at scale.

Bearing on the model: A measurable within-fold counter-trend the model credits in the 1875–1925 north-western series.

20th–21st c.
TTD Dharmagiri Veda Vijnana Peetham; Kāñcī & Śṛṅgerī pāṭhaśālā networks; Maharshi Sandipani Rashtriya Ved Vidya Pratishthan

The pāṭhaśālā archipelago

Endowment boards, maṭhas and a national Veda-vidyā foundation fund hundreds of pāṭhaśālās and thousands of students; complete śākhā recordings and digital archives multiply.

Bearing on the model: Why the model lets the southern reciter series bend UP after ~1990 while the aggregate per-capita line stays near its historic floor.

1959 CE →
Parisada Hindu Dharma Indonesia (Bali)

The furthest lamp stays lit

Bali's Hindu community wins state recognition; pedanda lineages continue sūrya-sevana and Veda-stuti fragments; Indian–Balinese exchange resumes after five centuries.

Bearing on the model: The Suvarnabhumi series does not quite reach zero — a living remnant of the Kutai-to-Majapahit world.

Tarka — the method, fully exposed

chantations(year) = Σregions population × dharmic-fraction × reciters-per-dharmic × sessions-per-reciter. Every parameter below is an anchor table interpolated to yearly granularity (population log-linearly). The counterfactual 'potential' applies each region's own best-so-far fidelity to its actual population; the gap is attributed to five channels: the śramaṇa exit, conversion to Islam, other conversions, the bhakti–āgamic turn (dharma kept, Veda de-emphasised), and modern secular drift. Disagree with a number? Every cell names its rationale — attack the weakest one.

Honesty note. No census of Vedic recitation exists before the modern era. Every curve here is a reasoned estimate, not a measurement; the shaded band is the model's own uncertainty (up to ×3 in the ancient past), and the anchor tables are the complete list of assumptions.

Gandhara–Kamboja (Afghanistan & the NW frontier)

Baseline fold share 95% · session-intensity ×0.95

Population (millions)
YearValueRationale
3000 BCE0.3Msparse pastoral valleys
1500 BCE0.6MRigvedic-era settlement of the Kabul–Swat valleys
600 BCE1.2MGandhara a mahajanapada; Taxila rising
1 CE2.5MIndo-Greek / early Kushan urbanism
1000 CE2.5MKabul Shahi era
1500 CE3Mpost-Timur recovery
1800 CE4MDurrani realm
1900 CE5Mcolonial-era estimates for Afghanistan + frontier
1950 CE9M—
2000 CE25M—
2026 CE45MAfghanistan ~42M + frontier districts
Fraction lost to śramaṇa traditions
YearValueRationale
400 BCE0.02early sramana presence
250 BCE0.15Ashokan missions; Gandhara a Buddhist centre
1 CE0.45Indo-Greek/Saka patronage (Milindapanha)
200 CE0.6Kushan peak — Gandharan Buddhism at its height
630 CE0.5Xuanzang already reports decline and ruined viharas
900 CE0.28Hindu Shahi revival under Kabul's brahmin dynasty
1000 CE0.2—
1200 CE0.05—
1400 CE0Buddhism extinct in the region
Fraction converted to Islam
YearValueRationale
650 CE0—
700 CE0.02first Arab raids on Kabul/Zabul
900 CE0.15Saffarid conquests
1030 CE0.35Ghaznavid century — Mahmud's 17 campaigns based here
1100 CE0.55—
1250 CE0.75—
1400 CE0.9post-Timur; Kafiristan the last redoubt
1600 CE0.97—
1900 CE0.9951896 forced conversion of Kafiristan -> Nuristan
2026 CE0.999Hindu/Sikh community effectively gone after 2021
Fraction other conversions
YearValueRationale
1900 CE0—
2026 CE0—
Active reciters per dharmic person
YearValueRationale
3000 BCE0.01proto-Vedic ritual specialists
1500 BCE0.018Rigvedic heartland — highest reciter density anywhere
800 BCE0.015centre of gravity shifts east to Kuru-Pancala
1 CE0.008brahmin minority within a Buddhist-majority land
1000 CE0.006Shahi court patronage
1300 CE0.004—
1900 CE0.002small Hindu trading communities
2026 CE0.0002practically no Vedic recitation left on this soil

Sindhu–Sauvira & Panchanada (Indus basin: Punjab & Sindh)

Baseline fold share 95% · session-intensity ×1.00

Population (millions)
YearValueRationale
3000 BCE1.2MHarappan ascent
2600 BCE2Mmature Harappan cities
1900 BCE2.2Mde-urbanisation as the Sarasvati system fails
1500 BCE2M—
1000 BCE3M—
500 BCE5MAchaemenid satrapies of Gandara/Hindush attest density
1 CE8M—
1000 CE10M—
1500 CE14M—
1800 CE20M—
1900 CE30Mcensus era
1950 CE55M—
2000 CE200M—
2026 CE300MPakistan ~245M + Indian Punjab/Haryana
Fraction lost to śramaṇa traditions
YearValueRationale
250 BCE0.1Ashokan era
1 CE0.25—
500 CE0.35Sindh strongly Buddhist (later attested by Xuanzang)
711 CE0.4on the eve of the Arab conquest
900 CE0.28—
1200 CE0.1—
1500 CE0.02—
1700 CE0—
Fraction converted to Islam
YearValueRationale
700 CE0—
760 CE0.03Muhammad bin Qasim takes Sindh, 712
1000 CE0.1Ghaznavid raids begin from the west
1200 CE0.2—
1400 CE0.35Suhrawardi/Chishti khanqahs; agrarian conversion
1600 CE0.5west Punjab & Sindh now Muslim-majority
1750 CE0.55—
1900 CE0.581901 census: W. Punjab ~majority, E. Punjab Hindu/Sikh
1941 CE0.6—
1955 CE0.72Partition: the Pakistani side ~97% Muslim after 1947
2026 CE0.75—
Fraction other conversions
YearValueRationale
1900 CE0.005—
2026 CE0.01—
Active reciters per dharmic person
YearValueRationale
3000 BCE0.008if Harappan ritualists chanted proto-Vedic material — UNKNOWN; band is widest here
1500 BCE0.016Sapta-Sindhu — core Rigvedic srauta country
500 BCE0.012—
1 CE0.01—
1000 CE0.008—
1500 CE0.006Sultanate-era patronage loss
1900 CE0.004—
1950 CE0.003Partition scatters the Sindhi/Punjabi reciter lineages
2026 CE0.0008Indian Punjab/Haryana carry nearly all of it

Aryavarta–Madhyadesa (Gangetic plain, central & west India)

Baseline fold share 97% · session-intensity ×1.00

Population (millions)
YearValueRationale
3000 BCE1.5M—
1500 BCE4Mpainted-grey-ware horizon
1000 BCE8MKuru-Pancala consolidation; iron and rice
500 BCE14Msixteen mahajanapadas era
1 CE28MMauryan-to-Kushan urban peak
500 CE26MGupta era
1000 CE36M—
1500 CE52M—
1700 CE80MMughal peak (Moosvi-style estimates)
1800 CE90M—
1900 CE140Mcensus era
1950 CE200M—
2000 CE550M—
2026 CE750MUP+Bihar W+MP+Rajasthan+Gujarat+Maharashtra N+Nepal
Fraction lost to śramaṇa traditions
YearValueRationale
450 BCE0.02Buddha & Mahavira teaching in Magadha
250 BCE0.12Ashokan patronage
1 CE0.2—
400 CE0.25Faxian's India: sangha flourishing alongside brahmins
700 CE0.2Xuanzang sees both flourishing and decline
1000 CE0.12—
1200 CE0.06monastic network beheaded (Nalanda burned ~1193)
1500 CE0.02Jains persist in the west
1957 CE0.012Ambedkarite conversion adds neo-Buddhists
2026 CE0.012—
Fraction converted to Islam
YearValueRationale
1190 CE0—
1250 CE0.02Delhi Sultanate established (1206)
1400 CE0.07garrison towns, qasbahs, artisan conversion
1600 CE0.11Mughal era; Ain-i-Akbari's revenue society
1800 CE0.13—
1900 CE0.141901 census United Provinces ~14% Muslim
2026 CE0.15—
Fraction other conversions
YearValueRationale
1900 CE0.002—
2026 CE0.005—
Active reciters per dharmic person
YearValueRationale
1500 BCE0.008—
1000 BCE0.012Kuru-Pancala srauta consolidation — the samhitas fixed here
500 BCE0.011srauta already yielding to grhya simplification
1 CE0.01—
500 CE0.01Gupta revival; agrahara grants attested in copper plates
1000 CE0.009—
1300 CE0.006Sultanate century: patronage collapse, migration south
1600 CE0.006Mughal stability; Banaras revival under Todar Mal era
1800 CE0.006—
1900 CE0.005census counts ~5% brahmin; minority still srotriya
1950 CE0.003urbanisation; zamindari abolition ends mafi grants
2000 CE0.0012—
2026 CE0.0009daily sandhya now a small minority practice

Anga–Vanga–Kalinga (Bengal, Assam, Odisha)

Baseline fold share 95% · session-intensity ×0.95

Population (millions)
YearValueRationale
1000 BCE2M—
500 BCE5M—
1 CE10M—
500 CE9M—
1000 CE12MPala prosperity
1500 CE18M—
1800 CE33MBengal the richest subah
1900 CE55Mcensus era
1950 CE90M—
2000 CE280M—
2026 CE380MBangladesh ~175M + WB + Assam + Odisha
Fraction lost to śramaṇa traditions
YearValueRationale
250 BCE0.1—
1 CE0.2—
750 CE0.35Pala patronage: Nalanda, Vikramashila, Somapura
1100 CE0.3—
1250 CE0.1Turkic conquest beheads the monasteries (1200s)
1500 CE0.02—
2026 CE0.01—
Fraction converted to Islam
YearValueRationale
1200 CE0Bakhtiyar Khalji takes Bengal ~1204
1300 CE0.03—
1450 CE0.1sufi-led agrarian frontier opens the delta
1600 CE0.25Mughal Bengal: rice frontier conversion accelerates
1800 CE0.3—
1872 CE0.33first census stuns officials: Bengal ~half Muslim
1950 CE0.36—
2026 CE0.46Bangladesh 91% + WB 27% + Assam 34% averaged
Fraction other conversions
YearValueRationale
1900 CE0.005—
2026 CE0.02NE hill conversions
Active reciters per dharmic person
YearValueRationale
800 BCE0.004Aitareya Brahmana still calls the east 'outside'
1 CE0.006—
500 CE0.007—
1000 CE0.007Radhi/Varendra brahmin settlements (Adisura legend)
1300 CE0.005—
1600 CE0.005Navadvipa: a great smarta/nyaya centre — but bhakti-led
1900 CE0.004—
1950 CE0.002Partition scatters East Bengal lineages
2026 CE0.0006—

Dakshinapatha & Tamilakam (peninsular India & Lanka)

Baseline fold share 95% · session-intensity ×1.05

Population (millions)
YearValueRationale
1000 BCE3Mmegalithic south
500 BCE6M—
1 CE14MSangam-era polities; Roman trade
500 CE14M—
1000 CE16MChola peak
1500 CE24MVijayanagara peak
1800 CE45M—
1900 CE70Mcensus era
1950 CE110M—
2000 CE280M—
2026 CE340Mfive southern states + Lanka
Fraction lost to śramaṇa traditions
YearValueRationale
250 BCE0.05Ashokan missions; Lanka converts
1 CE0.12—
500 CE0.22Jain & Buddhist strength in Tamilakam/Karnataka
800 CE0.16Nayanmar-Alvar bhakti counter-wave
1100 CE0.08—
1400 CE0.05—
2026 CE0.05Lanka's Buddhist majority folded into this region
Fraction converted to Islam
YearValueRationale
1300 CE0.01Malik Kafur's raids; Madurai Sultanate
1500 CE0.05Deccan sultanates; Mappila & Marakkar coasts
1700 CE0.08—
1900 CE0.09—
2026 CE0.1—
Fraction other conversions
YearValueRationale
1560 CE0.005Goa Inquisition era conversions
1800 CE0.02—
1900 CE0.04—
2026 CE0.06Kerala ~18% Christian; TN/AP coastal communities
Active reciters per dharmic person
YearValueRationale
600 BCE0.002first northern contact
300 BCE0.005brahmin migrations southward begin
1 CE0.007Sangam poems already honour 'antanar' of the four Vedas
500 CE0.009Pallava grants: ghatika at Kanchi
1000 CE0.011Chola ekabhoga/agrahara grants — peak density
1350 CE0.011Vijayanagara shelter; Sayana's commentary project
1600 CE0.01Nayaka patronage continues
1800 CE0.009—
1900 CE0.007Madras census: Tanjore/Kerala thick with vaidikas
1950 CE0.004land reforms end the agrahara economy
2000 CE0.0016pathashala revival (TTD, mathas) slows the fall
2026 CE0.0014the strongest surviving regional tradition

Suvarnabhumi–Dvipantara (SE Asia: Burma to Java–Bali)

Baseline fold share 75% · session-intensity ×0.80

Population (millions)
YearValueRationale
1 CE4MFunan era
500 CE6M—
1000 CE10MAngkor & Srivijaya peak
1300 CE13M—
1500 CE16M—
1800 CE30M—
1900 CE60Mcolonial censuses
1950 CE130M—
2000 CE380M—
2026 CE480MBurma+Thailand+Cambodia+Champa coast+Malaysia+W. Indonesia
Fraction lost to śramaṇa traditions
YearValueRationale
100 CE0.05Buddhism arrives with the same ships as the brahmins
500 CE0.2—
800 CE0.3—
1100 CE0.45Pagan's Theravada reform radiates
1300 CE0.6Sukhothai, post-Angkor Cambodia go Theravada
1500 CE0.55—
1800 CE0.52—
2026 CE0.48mainland SE Asia Theravada-majority
Fraction converted to Islam
YearValueRationale
1250 CE0.01Pasai, first sultanate on Sumatra
1414 CE0.05Malacca converts — entrepot Islam
1500 CE0.15—
1600 CE0.35Java's interior converts; Mataram Islamic
1700 CE0.42—
1900 CE0.45—
2026 CE0.5Malaysia + western Indonesia
Fraction other conversions
YearValueRationale
1600 CE0.01Philippines excluded; Vietnam missions
1900 CE0.02—
2026 CE0.02—
Active reciters per dharmic person
YearValueRationale
100 CE0.0005first court brahmins (Funan)
400 CE0.0012Kutai yupa inscriptions — Vedic sacrifice in Borneo
800 CE0.0015Angkor purohitas; Java's Sailendra-Sanjaya courts
1200 CE0.0012—
1400 CE0.0008Majapahit's rsi-saiva-sogata clergy
1600 CE0.0003refuge in Bali after Majapahit falls
1900 CE0.0002Balinese pedanda lineages
2026 CE0.00015Bali ~4M Hindus; Veda parisada revival is young

Shared curves

Sessions per active reciter per year
YearValueRationale
3000 BCE850/yrdaily fire-rite + twilight recitation economy
1200 BCE950/yrpeak srauta era: agnihotra + dual sandhya + svadhyaya
500 BCE900/yrgrhya codification; srauta already contracting
500 CE800/yrsmarta consolidation
1000 CE780/yr—
1500 CE730/yrbhakti era: japa and kirtana absorb the day
1800 CE730/yr—
1900 CE700/yr—
1950 CE650/yr—
2026 CE620/yrobservant minority still near-daily; others occasional
Bhakti share of within-fold loss
YearValueRationale
600 CE1—
1750 CE0.9—
1800 CE0.7Company rule begins reshaping livelihoods
1850 CE0.6Macaulayan education spreads
1900 CE0.5—
1950 CE0.35—
2026 CE0.25secular drift now the main within-fold leak
Uncertainty envelope (×)
YearValueRationale
3000 BCE3×no texts, no censuses — pure reconstruction
1000 BCE2.6×textual geography only
1 CE2.2×foreign accounts begin (Megasthenes)
1000 CE2×inscriptions + Al-Biruni
1500 CE1.9×—
1800 CE1.7×early colonial surveys
1900 CE1.5×census era
2026 CE1.35×surveys of practice still thin