1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d719323faeac7f3738baf31dfbefcaee4af79cd1197175324d395b12902a55. 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/60fc8313-bcf0-4522-8b26-021c060df018.json and https://artists.proofprofile.net/proofs/artist/60fc8313-bcf0-4522-8b26-021c060df018.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 → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8271faeb51a0b37515b94eb30bb2e76e36178788568f17aaa185df57ecc9ca15. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZTBB2205382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x286c780ee3f282bdbb3d435dc063a28b6735ff56f56ab30480111f52d7b16ac2. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZFZ42354125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf61a3ddbff14889b24fdbb053c4197beb8ab348f2a4bc2fd7eb76988d964492. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GX3Q92450624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a405a21293400dcb68bde775dfda740c6af94fe4f06cb7eb3c6f4e365d26c91. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:48:01Z), 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/UKXN22418766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd4b44a2efe0401ba7ca83c619fb376d2f889866d37305fcb6b529eef4cb4d8. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/GBMA22407897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912e885272fbdb348774056a2dc35c0441c1e73b80cb63226a337c26e5c6274f. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/GXF9Q2442137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f533c34511e9651c13fc6c1eaa0672834b28200ec760da7976bf363d756d22. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GXF9Q2420773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9e9069793933c7327eac7a63ee91ce23e2d685480220410a20a5eb1ccfc23eb. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:57:15Z), 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/GXF9Q2579299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11ad2f4c822191e9b7b6b763bb2ba278511d2b92885f40f08cfe34b3d0c6833. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:27:12Z), 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/GXF9Q2579301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf2fc2d687703fce39354b1a6d0fa71e80218a1315175ae94881e8066ae5edfe. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GXF9Q2579302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3deaca09c50d8aa550c2c9a118b5cbb7a3e2bc0624587bce1225f90845770f0. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:40:34Z), 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/GXF9Q2579304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86205ecf2711c6e796c2fabbc08823fe1f90a12488d6c022534b5a243805dfd6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GXF9Q2579306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c6f7abb18cb5a34e5ba7137752288cb91960b991b2fc126b95ea800f4c3a63b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GXF9Q2579305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d20d8b679125f944ced478791ca642b675dc6a41880aa40e37607c99d3006f. 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/GBMA22367161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef9e782d5651395a91126223db5bb4c4fcb4aa006740f374fe80b0dba846a1c. 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/ARBIC2300010.