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 0xab3dc17627816a1542266d6295809983eda7d62b445ab856ad11acc63262f83a. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0dd744bb-f603-4f75-b845-1b9b07ce5316.json and https://artists.proofprofile.net/proofs/artist/0dd744bb-f603-4f75-b845-1b9b07ce5316.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
My Bonnie Lies Over The Ocean - Piano Lullaby
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 0x9fa5e0ddc14d7553de9a13d9561498f9dc25746c4895104498a5c2782a37a997. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:31:59Z), 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/QZMEP2291910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2102e15cb995976a9dfe39e047039945cf87337605b6ee1d2ecef23efb310230. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:24:02Z), 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/QZNWR2285742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0891f99ff8b9c7dd08fb0091485780f773853768257aa56c538565171adcc4de. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZNWR2285743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe1f0868aa3fd70776a2e7e1ae8f16df7b2d99528d5dbe58fa013e676dcceae. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZNWZ2292157.