Phillip Barry Stack (born 1977) is an Australian jazz and rock musician. He is the founding bass guitarist of the pop rock band Thirsty Merc since 2002, the regular double bassist for jazz musician Ja
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbdfd5fa8d2c14b86471036e2180e893e375c7968a8edfe912e0e3669f2c729f. 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/6648d7dd-f6e3-4c92-bc56-28e307fb1187.json and https://artists.proofprofile.net/proofs/artist/6648d7dd-f6e3-4c92-bc56-28e307fb1187.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).