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 0xc9da65e694fe181d98112e7a12f1cde48a743030d95e091d87cdd5787e573da0. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2c15899c-c77a-4929-b1f5-2cf20f834849.json and https://artists.proofprofile.net/proofs/artist/2c15899c-c77a-4929-b1f5-2cf20f834849.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 0x7481c79225a74a0a87b5dc2d7c620f8252b401f094e98ba81498554ba0bfd264. Chain 2 (Bitcoin): anchored in block 957796 (2026-07-13T03:24:42Z), 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/BRAPI9900113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89753618b47fee2f40a8c02e2db71bb719f97b4eb251b07be467dcc65067bf46. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/BRAPI9900115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c6568627e5e41bde79be9ae134dc75ff36dd85fde9a41f254d8ec78665dcfa2. Chain 2 (Bitcoin): anchored in block 957705 (2026-07-12T12:50:42Z), 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/BRAPI9900116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb800405dd0ba485f7d9499403ea75daaeecaa9354bee8d1b034006bcf81faa6. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/BRAPI9900118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x017deec89b26fcd718854ffcd477ab26c254a9eff57366510efbdb160fd1f966. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:10:55Z), 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/BRAPI9900119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23bda27bc69667900c07b7fc52388795d72f9d846f4a2dd4afc7382ab0240aae. 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/BRAPI9900125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69824efd29b7290a52cf28751bc79a102ab3cf5801962622339f49cf823ee807. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:36:44Z), 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/BRAPI0000492.