thumb|Iyer receiving Sangeet Natak Academy award in 1953 Semmangudi Radhakrishna Srinivasa Iyer (25 July 1908 – 31 October 2003) was an Indian Carnatic vocalist. He was the youngest recipient of the S
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 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 0x9982347e544266c4207e58d6dfdf22303bbf9a62871a6a7d1525c585e42d45e1. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8c82a0ed-3686-4d7b-8cc7-d2735d845f75.json and https://artists.proofprofile.net/proofs/artist/8c82a0ed-3686-4d7b-8cc7-d2735d845f75.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Savithri (Original Motion Picture Soundtrack)
The Giants Of Carnatic Music Dr Semmangudi R
Collectors Choice - Semmangudi R. Srinivasa Iyer, Vol. 2 (Live)
Collectors Choice - Semmangudi R. Srinivasa Iyer, Vol. 1 (Live)
Collectors Choice - Semmangudi R. Srinivasa Iyer, Vol. 3 (Live)
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 0x4da05c90910cba4ec53e88cd5201715a313ae9c8506e951b6a78c2ed1d8433b7. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/INK120800485.
Deva Deva Kalayamithe - Mayamalavagowla - Rupakam
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f58af1134df06d109d0c6042fa9c98f829b7b78a053d842dc1a01dcf9016bb. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/INS451100382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641c28136e380817591e9aaf6e0d9f0766001fa7a84aa6c4e0f0f232c4e73339. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/INS451100383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d0d6fd81a81491327ab020d7964b777270212adc19c804e8f0e088e0a87f0a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/INS451100381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958d8ed67b7dc779ab86afe87e700af9858d6bcd578233fb28e40c347fe4b62f. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/INS451100386.
Dakshina Murthe - Sankarabharanam - Misra Jampa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f45971900ad6ea242a9b2fad42e3967fec08c6f07946b4a3241a2dfb9c474a. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/INS451100385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6e65afb0ab44da1ad741facdd7fd3631670a4b4a2bf5e7a9074e3354a32a41. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/INS451100379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f87d1c0c584867c39a8aa671468446e871e4310166028d3b8812f23c68d1989. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/INS451100384.
Kamakshi Swarajathi - Bhairavi - Misra Chapu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff4c2c480fb8e4792ffbc0a2298d484644c4e0e5bee2fcca8d599f6b7a57d88d. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/INS451100388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81e4d629115aa6049e79d86e58b524e4452c99167eda5799a5b2d39803f2833. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/INS451100380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c9baf8f99c9dbf3f4e730aa68a2164ce6100011ff87202388aaede1b5264dd. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/INS451100387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f72dc0b178e9923766e781155d850d00212459abaa987917603cd0a75fcff6. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/INS731300095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbbf8febc9758b6c356ad860033245fe9edff48157c203e7ee553159aca6babe. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/INS731300096.
Doyen of the Carnatic Music Karnataka Sangeeta Bhishma Pitamaha
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x221643fcf98496abadb99084826fea2864b51a2a9aa2db626a81fca4cac2f3de. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/INS451100417.
Gems from the Carnatic Classicals, Vol. 2