1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x538e2a213cae8ac7da4a9ffa4bccb3ec2c803615bc6416709051ff33afcdcdb2. Chain 2 (Bitcoin): anchored in block 954650 (2026-06-21T04:51:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dadc4a22-3c3b-41c8-beb3-3a955c18c77d.json and https://artists.proofprofile.net/proofs/artist/dadc4a22-3c3b-41c8-beb3-3a955c18c77d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Regina / Act 2: Oh, Addie, where are you?
Regina / Act 2: These cee-gars what you looking for, son?
Regina / Act 3: Horace and Addie (dialogue)
Lady Macbeth of Mtsensk District / Act 1: Govorí - ... - Cegó vstal?
Lady Macbeth of Mtsensk District / Act 1: Ay! Ay! Ay! - Otpustíte bábu
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 → block OTSBitcoinBlock must exist at that height 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 0x94630f9fec991823e5eb704f7487fe38f6d3aa49152663fb36f3942a613f013f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEF059231205.