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 0x22aba69045f18217f9b2bd0950bc7248ca87b9cdfda169bda39dac2499f335dd. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e7006fa4-ca21-41f6-8a3d-999749033487.json and https://artists.proofprofile.net/proofs/artist/e7006fa4-ca21-41f6-8a3d-999749033487.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 0x99693691ea4d2f9c28acd711e4d61eb08729790ceeadba241ee623dc636f13f5. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T10:53:45Z), 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/GX3HH2469268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db98045748f640b909a5b45ff18f76f1f5048a812e5653efea3546ae7d3eaa1. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:09:48Z), 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/GX3HH2479477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74a1b133bc4900da1bc7a58cc88172a2141578affb2ae909654cb2353feb0c9. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/GX3HH2434471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473876a22c39073750018bf0e69085bdc4178740efc8a9ab0d5f4b6e3458bd39. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:41:39Z), 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/GX3HH2486280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a066d6833e4c84c0c030b12fcd9aebaafb60dac880ac74a879804fbff75b2e. 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/GX3HH2431207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30d171b23b71d51366026b08b46a38abd929bf413e1a5fd675c0bba759d2f43. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GX3HH2465070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb079dd52cbf8b9bc8dbc5ed7b7b0faa21f09f3a727b0d90f4777a4a64b32d273. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:35:24Z), 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/GX3HH2483776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57a3ac61613682d647528375f036b9bc6b6c8b14c0f1554602326c733cfb386. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/GXF972401939.