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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2872a73c407e79aeb8f82c8b4e6efa55fef607e64a72a161e4059fdbad07222f. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a710946d-bd41-4df0-bbdc-c742a6d28924.json and https://artists.proofprofile.net/proofs/artist/a710946d-bd41-4df0-bbdc-c742a6d28924.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0575228f4fa3cc2bc4318c76fb0d5b6aa91244e6d7e96e3a2ef7e5d649b33dbe. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/US94P2321501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b321350cfd53a2403d86554e68b1016962afd7cd432100f8315e692eb376ab. 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/US94P2321502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd39bd859c86b4889731c129dde6a1d5c374836953bac3f98e2ca6ab4354fa12. 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/US94P2321503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5affbb4d3773ddda8714189661f90f7a65e1528b8b8fee9086898c017a5f1475. 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/US94P2321504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5dff44613f8dcb062686346ad129a7ea9fef829ab6ff73867ca43dae0db9dcd. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/US94P2321505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c5c9728f218d911e3bb0158fad6278c63d37eb00aa5bd30fc4294bb860a15d. 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/US94P2321507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb117f596afee9b8213e3ae2a653e660a401d389d0ecf94a7fd33c57ca71b5c07. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/US94P2321508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c0a6211844fea3a8ed3146a0034be16bb96ab15eb333610f51cae2cbacbd08b. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:53:18Z), 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/US94P2321506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee4e157672da9731c727456895dcd8584e4cf6af525e86ceb6cb1b14407ab98. 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/US94P1717501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1cc619bea4227ef37fcea41657e062dd06b81904c76237a2aa043b3cd4cdbc1. 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/US94P1717502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fface74b73bb9cfe9f6532ac1ef716a820afd241d5b2acad2f30d0e2b035940. 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/US94P1717504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa44bcaa154a99dcfbdc1d1c69141cc2a2107108eea8777b5061d61419c835221. 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/US94P1717505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a671adec8ec89a3af4fd24c7a6e646b305533162c55712a97374f9762b92f3. 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/US94P1717508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x113d6109d1c978a69894fec837763d5283662a70ad2779c2d8a6c26052937e8b. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/US94P1717509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c5c9728f218d911e3bb0158fad6278c63d37eb00aa5bd30fc4294bb860a15d. 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/US94P2321507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd39bd859c86b4889731c129dde6a1d5c374836953bac3f98e2ca6ab4354fa12. 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/US94P2321503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b321350cfd53a2403d86554e68b1016962afd7cd432100f8315e692eb376ab. 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/US94P2321502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b321350cfd53a2403d86554e68b1016962afd7cd432100f8315e692eb376ab. 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/US94P2321502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d11aa3787188b839314a5341bb36376d0bb55e3593bef3324a192a226c65133. 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/USCGH2137357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1cc619bea4227ef37fcea41657e062dd06b81904c76237a2aa043b3cd4cdbc1. 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/US94P1717502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33324f4876fdac8009584ecfd2a63aee48aa6b730aa52f1bcb9abf67e36526d9. 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/USHM21671327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a13c322268a33d4ce5aba9c8eda240115f82153e83f66be16c3812bc90ce585. 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/USHM91660900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc33a698fa1f24609d7c07c5857c9c5d74a5e2a1848ae8efe3abd2cb10cbad73. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USHM91660901.