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 0x8877f1797d7562dc7a14a0c2d480629e675bb38899821a555c71ef1cfa676475. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/350423df-a30d-47dc-bc73-acf1fe7cb9ef.json and https://artists.proofprofile.net/proofs/artist/350423df-a30d-47dc-bc73-acf1fe7cb9ef.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 0xd665f74678a23970d9e415bc1260eadcca25189306c70c7ac93364db1b32e20e. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:22:44Z), 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/QZ5AB2088184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd592bd7ec29479d5b77b35c534c747b7bb69fdce2381aa54bebbdaa82f2fd9f8. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:01:56Z), 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/QZEQU1900710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd054a8b91a3efd242cd38b5d9e209480aebb2e593b0d245da36039d6c98e9e25. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:32:46Z), 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/QZEQU1902461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959da85c8657fa66c6a9215e1330cb3301780cf83f9b458c351d7f1bea68789f. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:10:14Z), 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/QZEQU2076035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa462d6ede570a9d98e9e43bcf9be3f2cdb91650bf71a5f7c27884f71dcc18e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZEQU2147540.
it's just a breakup y'all i'm fine (i'm not)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83a0a8db864a85853c34ea251f8eca506f3c358b3e298379d87d825d9de4bde. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZEQU2300661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0022d0008b3867d415c52b033d776d0ae5a62be312b1df5aa138fee87f24c7. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZEQU2268198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f4452f8827c809c669f342506c0cb0abb5fb9037b477c1031c3ecc6996d3133. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:22:30Z), 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/QZEQU2204969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x143a4f40a251c5e29bb36e50b767a0c0e1b7b0004c536a1cb5a37d36d9d82ee6. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZEQU2208423.