John Borra is a Canadian musician from Toronto, Ontario, who performed as a supporting musician in punk and alternative rock bands in the 1980s and early 1990s before launching a career as an alternat
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 0xfcf87a81532fbd32d2483943487bd3f2f262f5eb2ad599bd31dab53c97e1c3d4. Chain 2 (Bitcoin): anchored in block 953875 (2026-06-16T02:12:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/07dae0e5-11ec-470a-bd07-c76666bc5f3b.json and https://artists.proofprofile.net/proofs/artist/07dae0e5-11ec-470a-bd07-c76666bc5f3b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Did What I Could (The Music Buddy Sessions, Season 2)