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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d43ca17274b540c5f1dbe2c52a8deeb3ae50c06fb5af2342eac5df6bf10c4c. Chain 2 (Bitcoin): anchored in block 953616 (2026-06-14T08:58:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1a444df8-c6c5-47b5-9c48-7c7cb983dbc8.json and https://artists.proofprofile.net/proofs/artist/1a444df8-c6c5-47b5-9c48-7c7cb983dbc8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Shouldn't Cry For Tasteless Shouldn't Doubt Madison
Honestly, I Don't Think Can't Touch Burn
Don't Tell Doubt Can't Blame Shouldn't Claim
Shouldn't Protect Damaged Shouldn't Solve I'm
Elizabeth Shouldn't Grow Corrosive Fuchsia
Can't Trace Sophia Ebony Shouldn't Drain
Shouldn't Love Shouldn't Doubt Can't Write About Maroon
Don't Search For Dennis Shouldn't Strip Sorry
Can't Touch Silver Shouldn't Carry Spill
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6888661307b4193761cdd84386c0085ef7ad584ff4958a6c5a2409b6ec5b9c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ITB881603547.