Nicholas Marsh (born January 31, 1986, Palo Alto, California, United States) (also known as "Public") is an American Grammy Award nominated record producer and songwriter, and 2012 ASCAP "most perform
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 0x265e3489049e343bf6b62e5964dfaa9beb3da68e2a81bc6739ad25966826630b. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/56b4036e-41cc-4632-aa3c-6923bcac3a4c.json and https://artists.proofprofile.net/proofs/artist/56b4036e-41cc-4632-aa3c-6923bcac3a4c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).