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 0xaa3557e890ddd1f499d683f45cdcf08b4c54e166cb16c8eae98917d1d17d63ca. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/de82370b-dcf9-4df9-a8cb-cdc250a1a43f.json and https://artists.proofprofile.net/proofs/artist/de82370b-dcf9-4df9-a8cb-cdc250a1a43f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Babylon Kingdub (Abbaba Soul Meets Mad Professor)
Dubshine (Abbaba Soul Meets Mad Professor)
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 0xd2806af20c1019d6b0caccf7f61cd65cccb67f29c4ade6dfd0be7074a592f665. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZWDE2493715.
Time Fi Dub (Abbaba Soul Meets Mad Professor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf344a8459459f763d22f952635333d87d58868393ee08dc004080cf990f9923. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:42:20Z), 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/QZWDE2494022.
Peacefull Dub (Abbaba Soul Meets Mad Professor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f3225f2647012efca16bacc3dc2dac2ed6ca21b13023cdaf5d11d514a93450. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZWDE2494075.