thumb|A silver screen on a frame. alt=A black-and-white photo of a movie theatre, featuring a screen on stage with its rigging hidden by black masking|thumb|A silver screen as seen in Victory Theatre
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 0xca6b21dc554b296881c63aebf89c7e6f2962d885f06a3c0490bc6a53cef3737b. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e790d33c-27cc-47d2-9f82-6a31b605de68.json and https://artists.proofprofile.net/proofs/artist/e790d33c-27cc-47d2-9f82-6a31b605de68.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
I've Been Thinking About You 2010 - Chico Del Mar vs Tom Palace Radio Cut
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 0x39dbc6e11afa61207744fd93eebc63f793e99885dbf084898d2a9aacee5e777d. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:11:29Z), 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/DEZ450900354.