Pandit Swapan Chaudhuri (born 30 March 1945), is an Indian tabla player. He has accompanied several musicians of Indian classical music, including, Pandit Ravi Shankar, Ustad Ali Akbar Khan, Ustad V
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b3eb50907b4741a95f9b9ece40273a1ccf63770aa9a5857fb9609b46b19f6c3. Chain 2 (Bitcoin): anchored in block 953754 (2026-06-15T06:45:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/af85ff7d-6dd6-4b8c-a00d-a1e3adc5a3c6.json and https://artists.proofprofile.net/proofs/artist/af85ff7d-6dd6-4b8c-a00d-a1e3adc5a3c6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Classic for Pleasure-Tabla Lahara - Swapan Chaudhuri
Pandit Swapan Chaudhuri (Live From Darbar Festival 2006)
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e7453c8147645fd4d11d8ef841f578da7d9c4925e279353eb8c0798e3fa5b9. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBHNS1802279.
Classic For Pleasure- Tabla Lahara - Swapan Chaudhuri
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a668ccbc361e10f92014c6483ab91ce49f850fb17d33952a2a3051e440a4f65. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INS101600045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef6b889c4bfa2ca5286364c7243340b071749ad7ae09389a54003add2930da8. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA560671710.
When Kailasha muses (From the Album "Manoyatri")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae674939ee295eba0d8f88b1f16c7088515f4964cd2fcd5360fc2020ddc8be00. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBCV9113302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x692056bfe102d4a1398ff6f898f5a5e14ccb9cddd6d22a4e8968b4e00caf9379. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INS172221638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x397348de3da2f7d63e85c32ed20e85d3bbe2f9f378ce2eb4ebd5bb9d72988ef1. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBBCV9113301.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f3db344394d45025b531c4c4e4fc8dbff47158bf0ca4bb5c982004475b7fce. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/INR3P2300010.