Orchestra Poly-Rythmo de Contonou Dahomey
{"copyright_id":"0x5dacfec1ec3f2fa6d545d0271ed21bf4a165265f94876051bd79f1ec9d6e8c66","name":"Orchestra Poly-Rythmo de Contonou Dahomey","registered_at":"2026-06-17T15:12:04Z","symbol":"NIM1434544","token_address":"0x6c534c9356361c8eed8ca2bac0f478eb2c5876cd","type":"artist","uuid":"8eb4dcd4-2332-4976-b3da-8bf0130faca5"}
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 0x5dacfec1ec3f2fa6d545d0271ed21bf4a165265f94876051bd79f1ec9d6e8c66. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8eb4dcd4-2332-4976-b3da-8bf0130faca5.json and https://artists.proofprofile.net/proofs/artist/8eb4dcd4-2332-4976-b3da-8bf0130faca5.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 0xf59758334542725411b97b80ebd19ad57422fe5b5311a40f4d1dbf02f92f5ca5. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/GBUQC2000631.