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 0x1d5a2973ce063717684369f10057338110baadfb11a99b57a55311f6ee563a19. 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/35b0fe53-b41b-4242-8e8b-73fccc0a2e28.json and https://artists.proofprofile.net/proofs/artist/35b0fe53-b41b-4242-8e8b-73fccc0a2e28.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 0x1211cefc8023fd204b2f05eb1069b33878914a87b87f8af6e5b2b3bf52572322. 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/SE4RG2401233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009240d79f0fe32409885ec0020ad86d99bd4f1c8cb27ce63de3ca8f3bb6f794. 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/SE4RG2301867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4aa406d2db79be40707f24870c4f29159f41b3b568420b9fcb2277a09fdfcce. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/SE4RG2301868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba831917e5b9b5c258dc265d336f65b4841ac6728e6865694df60ada3026106. 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/SE6RB2205976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0926c39b0ae0e6c45d7b41c43428aa18bd8e59a4eaef5a547688d037699f9c. 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/SE6RB2203223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734302a2d63ce07ff3627b7a3b4feba938e8064a1823d56dd47e8fa3352e6c48. 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/SE6RB2203218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc69e0fb63e9bdc65a74ebda6321d958dbbedb4ad141bdf74f6e41eba580a8e0. 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/SE6RB2203039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee67e4dc48c0d660633c38b8d2e339fd847619252a1ae8fcf5480e1dd1ab5232. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/SE6X32162603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05fe8753c93a087a9628861e3464be17c6634c6bb1558d029963fb8319286d6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SE6RB2167703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf61615832bcbd76a53920b636d1458eaecb763cc1a6d360dd5ee3e10067e9877. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SE4RG2191402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a53c6d08e452c4744cae33fbe4a3aee25c329e835e30299569301b59a0f5cc. 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/SE4RG2191403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c04aacf03ee58bbd10a2343187f6c6c9f1cc0602d7c9bfc062cb943f9e9cf80. 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/SE6RB2073901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a8afbd58dd8eb5796ae3212b3d9d32c01450bff6a60a899bf99295a6a60b37. 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/SE6RB2063901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b073b2b759e672448d60557b149f17c549858104ee294b2431feceda9575d94. 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/SE6RB2050201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3bc31fe92108d09aeaa8730859043c88381bbcfad9a745650a082532493adf1. 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/SE6RB2050202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x904d41dd25a922a9858feb2d4643969ac09a4cca0a7b53549bbc794a218f608e. 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/SE6RB2046601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda57ee821cd577bfcf7987692dbda82d6e3dcf39492849552b2566bcf348255. 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/SE6RB2035001.