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 0x6d188ddce0c4b43948d58d11381048e8595df9a87fba69556559900f966b26b9. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/abd59bab-06da-4aff-b797-9a4c4af74215.json and https://artists.proofprofile.net/proofs/artist/abd59bab-06da-4aff-b797-9a4c4af74215.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 0xdb88a5423d30957d0c6a4cd95feac9453928b9c440735f9ba93b495852cc7a30. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/BGA851684345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5add6759fdf20d1bfa581025b0f1119f38150e79f08088cd1ba47cc5571d4bb9. 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/BGA851684358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb538d3ba62ce701c2959f6753f0aa4439c3ad0bf65466ed847aa1189b9b5816e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BGA851684350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a13565056c4fe932c63d22f5744a23331b36dd512418c081539565cf28a69b. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/BGA261713701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0876f365767eb8924b3ffe9e7e7126a875064b5036127372919b805c69a5cb7. 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/BGA261579339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x541efd90b3eac864a28a44047b92be8aace99e2f9c59d1e8cc5c9fd4c189ccd6. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:09:06Z), 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/BGA261579333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50a7bd69353fd0761e7e3e1336f28e3cb6c7073322832b5a8ff742de6df87fd. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/BGA4J2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88e91a3e897b755682446edc3a6c9181d37e8e93dc8da8c85378547bc7bf44d. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/BGA4J2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eedb9befe107a23439f3f977055481d0c071995895e6416d9c85fa82a320254. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/BGA261582097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094703b0e37615589fa80eb0de9c2cba8a39b0752ea79d7a2f87b05630252162. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/BGA261583365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01fa64a4a2b5ca8cf54abfbdef7850cf5ae0729dfff82cd77325afe7f762f78. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BGA262477801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd41657448ff830a7f4dcedbaae583a78e7460a22ec18826dce428668509e6edb. 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/BGA261584152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbd0c174a98ace70ec780d732585e3a5db4d05f0670eb4d016e33a29488425d2. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BGA261584732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8dffd8199e9ea8f0f192a41186e8a4f3177c289553d4d7f22e33dcf8bc0e4f3. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/BGA261585073.