Matthew Sabatella and the Rambling String Band
{"copyright_id":"0x34aa9bc00b0cc557cafb6bdde10858d8a5290ba7b5b3dcbf3b22de2673776f99","name":"Matthew Sabatella and the Rambling String Band","registered_at":"2026-06-15T03:11:36Z","symbol":"NIM0663758","token_address":"0xfa79e0e902da90dcf54f2f3aafe4f6118ccdabbf","type":"artist","uuid":"d7223168-68b9-4070-a964-d46eb6a4f17b"}
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 0x34aa9bc00b0cc557cafb6bdde10858d8a5290ba7b5b3dcbf3b22de2673776f99. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d7223168-68b9-4070-a964-d46eb6a4f17b.json and https://artists.proofprofile.net/proofs/artist/d7223168-68b9-4070-a964-d46eb6a4f17b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Over a Wide and Fruitful Land (Ballad of America Volume 1)
America Singing (Ballad Of America Volume 2)
Songs in the Life of Abraham Lincoln (Ballad of America Vol. 3)
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 0x526ab008037fdf26c9476aaf5633dd4091a0ad04e24615d22d0018434cfdffa5. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/USCGH0936015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13521f6b290a1ba24a09c97f6186ebee6899bb6ad27f59c67fd7bd824915b26d. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:22:56Z), 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/USCGH0936020.