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 0x009c3c5b048206a248fdce1ee1fc1a48bb3a08b4e172d6f0cde11823ce32f7cc. Chain 2 (Bitcoin): anchored in block 953875 (2026-06-16T02:12:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/07ebcf06-4656-423a-a934-d888d82c84e7.json and https://artists.proofprofile.net/proofs/artist/07ebcf06-4656-423a-a934-d888d82c84e7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sri Annamacharya Nitya Sankeerthanam Vol. 3
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 0x184e9796d7ab3f0949bf9ab335f609edfd7694a6910322bbead7509ffd8f45af. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/INA090200160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c74a438dd1d15effdb47285b6d8ea05e46959f898aa36c9d1dd677b61e68474. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/INA090200169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e8836375d454e940eb7e7c2fdb3b763e0f0af97d56a3cb1b36b1ac37efcb44. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/INA090200058.
Sri Annamacharya Nitya Sankeerthanam Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a0ffd0972d2a4f7fa410c49d7924ffcf3e117181ef07e5b78db9d0e59c95e0. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/INA090200124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96077822a26dbfb04c2e82f8b9941f784e368274793efb8230efd16981a1a89c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/INA090200123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3247d2aa56c2b3ec5fdc085589a91d73c972ff6fd2e519592d09f4f6f4b11eb. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/INA090200125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f4adfce0ed194620a536329747adf1d05608c2321b4979ece8d8d20d3ade73. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T07:21:40Z), 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/INA090200126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3437873292137643d31ebc8ec2ad150137d49915737c7963c9aca2cfcdceaae. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/INA090200128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336dd903405cea8d78f7a3747feae8c7b74a57b5e5b5cc37fafae1a73faacb38. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/INA090200129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74730450507d3bcee989173c53e8d0b00e8ed2701314728ee4fcdaad2e61499. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/INA090200130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76598b3fcb7b8e2fe9de27194bd3a351667ed571eb1787ef8dd1851512777cb2. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/INA090200131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb6f52c37f192d481f6751f748d23e9d91eb40189c66161ff79d480c34a8d29c. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/INA090200132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d86623e74e354426919c0b30a1c8c6ec2648e876f00f30ce23e0e435ed7e1f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/INA090200082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8118105531a5a94050d9f86166493d518d8614a216bbcae413ff5eb064b0d0. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/INA090200084.
Sri Annamacharya Nitya Sankeerthanam Vol. 4
Sri Annamacharya Nitya Sankeerthanam Vol. 6
Sri Annamacharya Nitya Sankeerthanam Vol. 5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898215db5ecc1632f26adace80d28eda580f3264989b2749dab3c014079fcfdd. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/INA090300202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7faae5e94df72420649f44aa97b2ef383a1bc4a2c4f8c2c8c1201a9d69175a. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/INA090300211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828a5f4a141dde427dd1f4b19452d2c3e0e97331727260055a0c1f7f2dea7491. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/INA090203016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d849401dbcef0793e9e0a44bf3874e46e215df7d4cbf79cb9563c4bc079bb1f. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/INA090203015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43c5fee7646765aa571e2625bda361f8ecaa9c24e84c712baaeb823650d838c0. 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/INA090203020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ba432a7a4b39d374a1d1f185fdf03bf8ae61fe998d2bab657fc209aae5b716. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/INA090203022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdde49f73006f2552290180a1e390f1d9081c2d58709df4762febba05e30b5fd6. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/INA090203024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57bf7531d5415764a58c41171df6a9a9d31c64dfef25d1eeffb8946d69dc414c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/INK231501131.
Mallika Kusumamulu Sri Chakra Navaavalika Geethamalika
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f86e3643747c6619d9e91af34e191f02e0bf763aac563da8e49b9eb6737b659. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/INK231601507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283f5a830f04850214aba9b0d3572e4faaba527bea9cff9d9c9aae502593a00f. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/INK231401284.