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 0x5582776979e720eb2f26ee2ce3960fa1d0a2cabf5d26666209c5ce700355a380. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ce9d2563-154b-41c5-9bcb-d157a3b6d1cb.json and https://artists.proofprofile.net/proofs/artist/ce9d2563-154b-41c5-9bcb-d157a3b6d1cb.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 0x9106c87ff8f4bb433b582615a4119e7b399c513fe85f069cd8613b4096a12eed. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:56:01Z), 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/QZK6L2465355.
Rearranged (Live at Chill Country Sessions)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfacf002ba2dbedc7e377c09ba6318e687edab41b0d8584c5bfc102b22bed01f0. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZZ7S2410806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e2d833c1a59bdb4f01b8d90064f21ce2fe5f27b4a24c86c0f40d224d4d757b3. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:00:32Z), 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/QZFZ42523195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9964c8d4f70737a37984e57f30331af0c51046304c114de886570e218d08ea6. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:31:12Z), 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/QZWFK2537440.