Joe Puma (August 13, 1927 – May 31, 2000) was an American jazz guitarist. Puma was born in the Bronx, New York. His first professional experience came with Joe Roland in 1949–50. He played in the ban
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 0x549ef4cd0b9892c2afc02b07451bd91e5a06499ef139436591a4cf6ad32514c2. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f34f1ed4-d31b-4393-bc67-ed39d16651d3.json and https://artists.proofprofile.net/proofs/artist/f34f1ed4-d31b-4393-bc67-ed39d16651d3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).