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 0x95c4837e0672baf15845172fa25d7fe75ecfcfa714ac5766e4da62a895a9a759. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ea57ef42-3fcf-4a74-9a75-eaf8541338de.json and https://artists.proofprofile.net/proofs/artist/ea57ef42-3fcf-4a74-9a75-eaf8541338de.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
SGFA (Sexy Girl From Abidjan) [feat. Oxlade, Didi b & Chrystel]
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 0x73d18edbfe4f7866047c38491cd9ff8d203aeb03d519e22a3db6da98451d3e40. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:31:28Z), 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/USUYG1376936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe83feb1759a48c849baef8b689fd3d713a848f563af5a0180f8e4ab6d36b470f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USUYG1454404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e17362122341afae51c3157acfd4f23c92136329b9fca11dc871a1bf6a4d21. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:44:06Z), 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/QZTLA2420715.