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 0x96236dd261ffc66e5057318a6f3040c24368d34df8d977687c4072a0f9ed8a99. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/00c4b274-a621-4818-9ff0-d8d9560388d6.json and https://artists.proofprofile.net/proofs/artist/00c4b274-a621-4818-9ff0-d8d9560388d6.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 0x7b7eaa0002d0d18bfd928954de668e1bcd9cc774957c977da65e8894b8e0552f. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:05:19Z), 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/BRILA0300293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x291926eeccdcb10ff5dff98fa69a888f47088bc121887863f86085393602fecb. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/BRILA0300294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b8ab1fca5b1a05673e72b2a24afb6e18b753514a4824379822d714e67cbdb5. 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/BRILA0300295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a0fe014d44cc11c595f46d467262a99decb7b1e6e513dbac1186fd6de6de86f. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/BRILA0300296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x144c04b2d96ed417b9970788e51a8efd9ee03aab0557c0337f26cd62116e83f0. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/BRILA0300299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9be42dee087413e04e29fbf19e54c516850656edb43ae5ef538040c2c154e6b. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/BRILA0300301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e9cf3fff82b66a914c176f93fe00b115036c0b023255bad37f80be749c780f. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/BRILA0100376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa743f9d7d106b6554a2018943bf15b1ce66e7f61ca7e3a5f631c8bc54710c28. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/BRILA0100383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91378a981e4bd40f7885cf9effa70ec22cf8edf82de2c2bf589b29260d8e9747. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/BRILA0100387.