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 0x88f8f73bca93018a820a40220b344cf9f3a808cf618d61abfaf7a6cccd701f98. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d9c26f83-9155-483a-85fc-ecabfc674e2b.json and https://artists.proofprofile.net/proofs/artist/d9c26f83-9155-483a-85fc-ecabfc674e2b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x198cd4ebd839d96d685c5191bd4e42a7838c6d0a6c96e2cecf10f30927a8a54e. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:58:50Z), 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/AURH00300080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841e8c53027b614857d8d9d558e4f71c0ebf5d86bcc7d536f4d8f5fbd01b9d96. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/AURH00300081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0efa2f93ff7f84e1b2ef648234206099d7a7affdb14e977167ecc68214153cfa. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:53:18Z), 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/AURH00300088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5f4d5cc9e1bc77610014f86db38068fc0bf3602d2176ea3c9b14ddde82c452. 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/AURH00300119.
In My African Dream - The Best of Johnny Clegg & Savuka