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 0xe7986ec18695bc2a2d5713bdbf4030fc09d650784f8a9496c3c9c30576024f93. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/50b22b5a-be33-4fa0-bf8f-e5ec9f7c6e49.json and https://artists.proofprofile.net/proofs/artist/50b22b5a-be33-4fa0-bf8f-e5ec9f7c6e49.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 0xdaf876982eec092ce977a2954f34d6fe2ba4d0ca1b115b9eb64c36df81413338. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:43:06Z), 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/TCABI1208385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55422d9e9944d3f826edad1ececb3f7d968fbc0bbc6a2790571d833fef95dcaa. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/TCABI1208387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fbc257fdf84ecbdbda9af389ce0543550ea7d46257d853cfa8bcdcf9392b5b8. 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/TCABI1252318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eecdd1a5609fa71b97652c652b5f4d4b4b7fa37cf13453f06086b7ae54a6976. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCABI1287965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9832580b60033eb833a417477e3fb15e59c1ea56e90bc5028cfbc9cc1e346edb. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/TCABJ1278463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb276b03c32339e2f432e6865bbe54d01156dad36a7ac782b0690f7bc14adee51. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCABL1384002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79dc5c23eb1151455c094b8b0d8dccf9d5735918f7bde649161692e1bff389ac. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:58:15Z), 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/TCABP1337020.
Mineshank Prison Break (feat. the Professionals)