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 0xf6678c5bc69ef33823d8c9b2de0bf0945c6e7cf8c984f3bde16fa11a5618c43f. 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/9b8cfeb6-a40f-4dd6-8e83-b732ebe731c9.json and https://artists.proofprofile.net/proofs/artist/9b8cfeb6-a40f-4dd6-8e83-b732ebe731c9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xe537dfb321ee5e8de70920f9bbe09ead046acac8226c875e3148c87948ba24ca. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/INI110274050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc47aa1b7924ffff7c3e12cc7777e5fd2cd49370beff07f4a3ffbae203d593744. 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/INI119772230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b885e30ed39ac41fc504d8e5f7e4a383b5691dba45424e29d4615e7f67a4b4. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/INI119973000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x769d2e31f268f43e246e22e565d0a4b528738765ad35fe8c2a4b4d8822af3e58. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/INI110274060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b211a3fdd72063982fb2f39d877f977c25824415b75d612319b06d6fdd2d93a. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/INI119972800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf237ae5a1bd7d3c2da0e275fa7b12b9352e1857465d0432be3b5049a3865555. 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/INI119670880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91cabc8e1d64813988d53ff2b7843a74141ca5f87867dd79dc149b21a232125. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/INI119972860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd73b7ef55128b93facf44565464721a245419771bfa73fa0d0b3b272e4a9ea7. 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/INI110273950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754526606d6cb354d652113c2d0a51d43de033d3d2198fff2118d1c182234f84. 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/INI119972900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x662a4a28766675eb6d20ac31b13f348544428492ea8a3afab47b64511a10281e. 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/INI110185920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0adbd5b6816cbcacbf658beaa977c361af79490f6be0a9f15aa8f89467193f0e. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/INI110174070.
Janakasutha Vol. 3 (Basic Classical Lessons)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bda151b6efc23fb13cfe50d099248556f8fa72888dacd62d423f1583bd8ea79. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/INM6N2000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1311d7442287576d3b19f9e2c2b259042a3c599cc8452cea511ce8b7355872a. 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/INM6N2000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x208b67bca203b3553869b3955c75af3d7bb2ea800cb15dac46e2ab822d478c27. 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/INM6N2000019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x659447189a6c07f9818c72c6775e30e655f5d1e155b55764492088b25f6c2ef9. 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/INM6N2000023.
Amma Nimma - Desh -Durga - Sindhubhairavi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8928ff9f4714334c50cdd5b182a2ccb6e028622ff6a18874c849483617b1e0c. 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/INM6N2000024.
Chandrachooda Shiva Shankara (Instrumental - Violin)
Ayagirirnandini Bhagyadalakshmi Baaramma
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1931b376420bd0c8937f97e766ab1a49a729e2995535c3460fd0d88c3f8d91f1. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/INS9S2306500.