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 0xb26c5ab7ed365c1d9587c36226fb7354a89bdb36adbd627af8f4538d78813564. Chain 2 (Bitcoin): anchored in block 954039 (2026-06-17T03:00:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3e93e68a-b701-4ae3-b3ab-d0ebe90f1829.json and https://artists.proofprofile.net/proofs/artist/3e93e68a-b701-4ae3-b3ab-d0ebe90f1829.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Beyond the Tattered Curtain of Unspeakable Madness
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 0x5ef065e623b3c020f80b0b6bcdfac8e1fc6f366b95c321ebd21daabf44c73d64. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T15:56:28Z), 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/QZWFQ2543718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f233729a6454e93fd359d21d345e9e5de5f1f1f092d89032c8429d2b416aca8. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T15:01:12Z), 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/QZWFQ2543719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb647af17badb3d9df76835ee40d29a206dae9f38130386e4dc1828e6c16079a. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZWFQ2543720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ebcf6a2eb8099358b0fce690b342b6e7c317addedfb8a9b9d2579d1cefca6b8. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:31:43Z), 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/QZWFQ2543722.