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 0x8ef2ae8c8efebf235056861f2f9be4dc71ddd75141b3562cb98586c1928778ce. 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/d137081b-b969-4f0f-8bf1-35136ec14488.json and https://artists.proofprofile.net/proofs/artist/d137081b-b969-4f0f-8bf1-35136ec14488.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 0x1c3acf6e0625f23e905887d0356847e2ccbe20ed9446a6dbfead43b4b526a4af. 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/QZES51901403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b26021980868787e4e0488672befd19ce83668c6a90c1358cb7b1fc0bb1b04. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBENT1688509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1abe120d7cd664a215b822869aef895fc830fe13b79e4d8fa3b47c964835f633. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/UKXN22513701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f007dbf83a9580d280528b27f8b7576f259f235b94ff7677a9e565af390139. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR96X2194020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99546e96e379afd90e7c9a06b0600f5e8249ca47bdef494a6a5c22dbbd242b09. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/FR59R2162071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x178e97ccc12c1551d3c6921b81de4d43501e2622bf897dfb60d4905dfc606aac. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/FR59R2162072.
She Belongs to the Night - Etta Bond Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977688da9be235568b65050a614c42f12026b2996f20a0123dff93391a5fc828. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FRX202149050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f007dbf83a9580d280528b27f8b7576f259f235b94ff7677a9e565af390139. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/FR96X2194020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99546e96e379afd90e7c9a06b0600f5e8249ca47bdef494a6a5c22dbbd242b09. 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/FR59R2162071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x178e97ccc12c1551d3c6921b81de4d43501e2622bf897dfb60d4905dfc606aac. 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/FR59R2162072.
All of This - DJ Supa D X Mr Taffa Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d04f8c91571801f8593ee93546ec1dd1cf34ea260a82b3f1ac997dcd8d6fb1d. 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/QMDA72129351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa214c7c3c852a63b3c27c1ba34350cc82a4ad3822f8b8afb801dbb4a96ba3519. 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/GBENT1688535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ce9a45920e5eae310dc510d189c59f141881cd6fe3dfffbb98658f57ef6167. 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/GBENT1688533.