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 0x2b4296348e208f4098698d0b42cb5d3b1a4971e1827c338b0ca0465684d72296. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/87c19163-fa9f-467c-bfe6-4beb0fbd68dc.json and https://artists.proofprofile.net/proofs/artist/87c19163-fa9f-467c-bfe6-4beb0fbd68dc.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 0xebe30316c0aed4c0240d62b137696e9a47706a1874d74cc98c4d20f6ef903d9a. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/GBLFP2500341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x787d40dc9e83bf112d7f21e9cc7268ac40b78ec3e57dd9e0db9652cc2f33e223. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:18:46Z), 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/GBLFP2500343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3bc87f72cff5d6e9e850efdda8de12380c8bce488c59ee69b4a9df347306558. 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/GBLFP2500345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3f1d08bcf8bfbe33e34e3ab6817c247a2e8a7ee1b9a5eb64184bd5aabac5a9. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:10:38Z), 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/GBLFP2500346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3be3b7f9e81a7c2f4d5bdd161b23c5bdc88266e0ce2affc832906c94df0dd58. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:56:31Z), 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/GBLFP2500348.