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 0x78cb19b3a28c2a6a18896e1c90aad8fbcc9d23f70ec1fe16006a5eea8adba4f3. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2a93d3ea-24d7-454b-b00e-b06ea047883b.json and https://artists.proofprofile.net/proofs/artist/2a93d3ea-24d7-454b-b00e-b06ea047883b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Just Frank Speaking (feat. Frank Tembi Blucas)
Said Enough, Pt. 2 (feat. Yaa Pono & Camie)
Changing (feat. June Ubi, Krack Gyamfi, Jayso & Amma Rose)
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 0x38b08c5e20c1b3352c4e0fbc0436fff8315dd0b17411624b9b1e083de81e9356. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBPG32000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa15119b3c4fbcc3fa1f0c68ad5903efa633109e3539e10face1298bad7722a. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:36:09Z), 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/GBPG32100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63771cb199c58535d117b2ce75251465b5bbda44cac3eb94559e73a479cfb164. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:11:04Z), 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/GBPG32300001.