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 0xe6463ee6e2e6ac487eeb9865ea7439d09a1568627922a18267c31314c52d0ff7. Chain 2 (Bitcoin): anchored in block 954553 (2026-06-20T11:51:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/abee773a-04e3-4766-9e32-9db829f70677.json and https://artists.proofprofile.net/proofs/artist/abee773a-04e3-4766-9e32-9db829f70677.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 0x3c8ab6be44f06cac28c5ef0b2248bfbac1c7206e49e9befcc910661d2aa24c87. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/USYB32540503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66025be5bd60712a1c0d97992126b94513935493da338cd1aa0c7ae787726dd. 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/USYB32540501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a7b52e69e036d38a1bc56bdc9b219d476c9f657ea79d30bb51d10cb070f78f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USYB32540504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83207c22e0c958997e2e7ccc7086598c75b67ee30c58172a01c5f8ada0576da8. 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/USYB32540506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9706f45708b22ee21f693ecfa6fe59740e51db1d2b6213084467fc6012fbf265. 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/USYB32540508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec5163a50ce6b74cb3505592782711223c7b447f82a302426d44b68b4b7609b. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:53:36Z), 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/USYB32540509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x111ad444a4327709777dd80ec9d6c4d0d7dffabc8f1e6fc373a57363bd06d294. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/USYB32540512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7c7251ab3b2943c11f8b796e3d9d204fc8e0899bb382c03c842fb7812c16551. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:08:47Z), 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/USYB32540514.