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 0xe52c8f1d0f50a8a645497f65419e2ec398230d8e37633d0c2258d00dda258548. Chain 2 (Bitcoin): anchored in block 953808 (2026-06-15T16:45:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f31b1b00-138f-4fa5-bf6c-510c7fdb0182.json and https://artists.proofprofile.net/proofs/artist/f31b1b00-138f-4fa5-bf6c-510c7fdb0182.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 0x6e02100464c43685aa8898cd75c0cc51c8fbc9e98cae2ecf4ec1148c1aa19bf1. 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/DET191204700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb080205ea253b8a3e12b2a70996dee7be77797d27bd31eb4505a7e24754ee4. 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/DET191204605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2627383e322420c4ea6af5a6162ab3ba0c388b7fbac830bc95139ebf3a2958c9. 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/DET191204701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141b98d9822a5afce33cece7c5cbf9269267e125941079b56ac4d622b5d36482. 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/DET191204703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42557681586dfa9b4ff2a8455d037d51284858b8d53b74cd6a3d80c57f6b5bb5. 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/DET191103312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae79244ced490afe8a87e982993ebf39e3320b397c975dde0582d8e455360b68. 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/DET191103301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0eee1cb0eb30e52cf557277bd6463db721f7464062901d60daf40bb12783d84. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/DET191103376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb14b542de492b2554a1ef374168f37759b0bd1b4ca19fac7c5549f4f09cbd81d. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/DET191002034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b3f5c58902c915d37d6c0e2d485d518c1cb3cd5dbbf82e4a1ab09fe3073348. 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/DET191002035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d3018065177081541bcd8a1b05d7b938f33d41868a4a97d08e681173c6c7c6a. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DET191002036.
I Won't Forget You - DJ Novus feat. Grooveriders RMX Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9bc3a2c8dd8d647cba052285776ac18ce52a06b64f4e150f347cfda460a7cb7. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DET190801114.