Stephen C. Kirk (born May 25, 1959) is an American former handball player who competed in the 1984 Summer Olympics and in the 1988 Summer Olympics. In high school he mainly played basketball.https://
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 0xfe374d69fb11e6ebd33875006ab7f8953e3f902bb8319035d782bfa85c38c214. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eb46fcd4-abbe-4a11-8506-dd4bda6d33e2.json and https://artists.proofprofile.net/proofs/artist/eb46fcd4-abbe-4a11-8506-dd4bda6d33e2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).