{"copyright_id":"0xb5c0ae321fb02d28da897efa4b15bdc9845533698f75fba14aa2e8cf18cc40f5","name":"Doc Watson, Fred Price and Clint Howard","registered_at":"2026-06-20T16:57:39Z","symbol":"NIM1659188","token_address":"0xdf8b1cca941c96cd9a8ee52e7762f2fd3eac0c85","type":"artist","uuid":"ba021ee5-eca4-4c3c-bf56-ab8fbcf3393f"}
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 0xb5c0ae321fb02d28da897efa4b15bdc9845533698f75fba14aa2e8cf18cc40f5. 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/ba021ee5-eca4-4c3c-bf56-ab8fbcf3393f.json and https://artists.proofprofile.net/proofs/artist/ba021ee5-eca4-4c3c-bf56-ab8fbcf3393f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Classic Mountain Songs from Smithsonian Folkways
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 0x2244ca44cace45fd619aeba4cab382d1cc673c7fb13a3719845d00570b797de5. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USSF10209420.