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 0x9bfe6054d6e66c88c92a2cb03da217da9badf5e8dcc9f736c87f5c83d9ac0678. Chain 2 (Bitcoin): anchored in block 953938 (2026-06-16T11:35:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/20d31a34-9d49-4c98-905e-27b7abbae2a1.json and https://artists.proofprofile.net/proofs/artist/20d31a34-9d49-4c98-905e-27b7abbae2a1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Imisindo (feat. Nuro Groove & Mandisa Cebekhulu)
Amasango (feat. Somnyama & Mandisa Cebekhulu)
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 0x145b6a0e5123951c349c194ec372bfd4101bae4570b8adef8505fcc862e8f2b1. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/ZA56E2527314.
Ngiyazifela (feat. Ovuyonke Sotsaka, Thando Zide, Filipo & Scelo Gowane)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f3926aec61d2ebb12947697496e21b47388340fcb94dcedf1b6c7d63a188ad. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:07:40Z), 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/ZA56E2527870.