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 0xd905e9326b8964cd6a1a54dd51685cca033adcf5d137fa91c7a74f9a92ea27ab. 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/a366fb7b-9437-4d6a-a41f-d0d78c2bd95f.json and https://artists.proofprofile.net/proofs/artist/a366fb7b-9437-4d6a-a41f-d0d78c2bd95f.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 0x2b350c889bc5e5df2c39936ac5b7871464e602d71b56fbb15bbf0abab70e0683. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/INS182302519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68015f9593f8aecced85f5e41106f29da858f5b2f592b67d5573ffd003147f3e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRX452265595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9991de43a305d0bff685c393691e3171070220727c601640849f8b3640beefc1. 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/DGA052442186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106901bd20a608fbd4dd57cac0ad94c70920a16cb8dc0b7d3880d65115200af9. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/QM24S2300920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106901bd20a608fbd4dd57cac0ad94c70920a16cb8dc0b7d3880d65115200af9. 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/QM24S2300920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106901bd20a608fbd4dd57cac0ad94c70920a16cb8dc0b7d3880d65115200af9. 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/QM24S2300920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a50354c77161481524b1aa4ed1496ed44a389a8a7ffbcb677abe38f9dd1ce6. 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/AUXN22471289.
Meenakshi Sundareshwar (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968a76044a0d9d04add83c5d656ebf5b41880eeac66c968c4caf561688051ec5. 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/INS172104082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc75bc4d8cf55ad14b34748862fe8271285049cd1ef62acecf41238406c7ec6. 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/INS182300703.
Chalte Raho (From "Pachuvum Athbutha Vilakkum")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc75bc4d8cf55ad14b34748862fe8271285049cd1ef62acecf41238406c7ec6. 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/INS182300703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed3bcae4d862a2c51920f7b093494155c25dabc20a527cfa5efa48a058540de. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/FRX282235064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d15a84b0f1380f6409683c25e59bbca7dcdc4cfa3687bb20f15f36181f5c27c. 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/FR10S2153429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07775235f5b7e33d9bd4ef492e106dcfb95fee05acf16e2b7075f1e1a1b185f5. 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/ES71G2240667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82d94b90398bf129ead44a50fa1f849869733d0dc2b5f8dceb3f455ec686f32. 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/GBEWA2201733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335f3343af35ada5323b1a73366e756d8f5f76f5953c6203b0440f160992429d. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBEWA2201736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb660f8738268f76c31f2f1f3c8ed5b9c01fd48c1cdbc37747c1a34a8bb60ed89. 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/DGA082458197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b3344ffbfa6d32b66473d809cf83ed9850c06d7a7c0f29331867818a84721f. 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/DGA0H2494725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b3344ffbfa6d32b66473d809cf83ed9850c06d7a7c0f29331867818a84721f. 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/DGA0H2494725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb660f8738268f76c31f2f1f3c8ed5b9c01fd48c1cdbc37747c1a34a8bb60ed89. 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/DGA082458197.