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 0xd3164e5514f78fb42886597016ac6bea117976d2db9d8850d8d63e1f3ca84dc2. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ed3e2497-3468-442c-be10-0e4982593038.json and https://artists.proofprofile.net/proofs/artist/ed3e2497-3468-442c-be10-0e4982593038.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 0xb758574c27561f16dfe81108ceb8a4e43c0c3c0380a4fd5853c749de07217fc4. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:34:29Z), 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/BXOSE1900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00d95c80d2919f7e9643163efc0b33852e90ba640d54eef50ea7a84b790462c. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:02:22Z), 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/BXOSE1900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1731813b00606110adbcde172f288f09cda3a35f41a9db6bbb923d599d237d04. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:16:22Z), 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/BXOSE1900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f733a7bdcb3f4217448c4055825c6a462e2416d154b8bbb20b86fcced89a714. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/BXOSE1900014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd65d0b4555423676baf4a233d46666143e856fe79be87ed0f5439dd911b412. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/BXOSE1900016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaebea50cf309c5b64f78259fafd9f6779d99912e75b80539c86479588eceb279. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/BXOSE1900020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaecb5519b524b3e2d61b36345856abffe1a8a9f3330491108de637f7e9d0101. 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/BXOSE1900021.