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 0x130edc914c1d0ea5baeb36ad6f09beda21a2cf0c6d3bbdc01a5fa4a1c7d9cbf8. 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/ffe43aca-1dfd-4427-a7ad-d1292bce0089.json and https://artists.proofprofile.net/proofs/artist/ffe43aca-1dfd-4427-a7ad-d1292bce0089.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 0x0a25ae785c8f2f388c7b952c7108b848f5750eb872a986fbab45801681451574. 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/QZMHL2394875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3818cce0d99c536ed632d70b19cc8ba87a6a87e9232aec2514311c78a74ce35. 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/AUMEV2361181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb12804d8cff63618a09957746cedd1c77ba58b9efc9f1b71e1b990ea28670aa. 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/QZAKB2345291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e67e333d7086804eb6251016dc27392ac021b1523e36701d5185360b72705ba. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZZ7P2499327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd224e8ace8e815f7d0911ceceed6bf00f2a994470b93a2aa3a36d20fdf132150. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/QZZ7P2499328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94883679b9f1c1f9d2d9ab7c19e1c7250856442bb55d4c25423fdcde7ff584e1. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/QZZ7P2499329.
If It's Lovin' That You Want (Jersey Club)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x163afb1533ea992e4d52700753b06f91948a374c5d007c72edfe0711084d8c17. 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/QZZ7P2499333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c364c128de355fa7a525f23c94fcceab93ade71e65172d5dff79560d7e194d. 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/CH7811114426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22797b120d625155fbca5f8bb9c175c76526b4c751ff2e672d42e5a03c17c27. 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/CH7811114427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4cb37a5cdfa9d7742877644bb89e75d1a083be9abdadb6aaa32ab6890419613. 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/CH7811114428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03a4e1cbc990ebba28d8f871a0245b8222ced82a0af3956b35d88850c92f031. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZDA52497478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d603266b2e9788ed798398b666cab183327df1ab395d0eb95e880236077abb2. 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/QZTBB2226167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd0f5e789194224e83444791c2eb5106b2f1d2da68d117fdc8758b4699c798c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZAKB2345626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65aea65fe2104ae5c81b15f709eeec4fc4c576d43d534131cddf30c4b27828e7. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/AUGBT2333023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdef0420864908eb71a7dd902dbc42ecb17948e276caf39019005614c2d6d340. 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/AUGBT2333051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600ac38d94bf9222d53ee90b91dc19b485b36153cdae08cc6ea360ca5dbf3993. 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/AUGBT2333052.