Paul Page (born November 25, 1945) is an American motorsports broadcaster who is best known for serving as the play-by-play commentator for the Indianapolis 500 for a total of 50 years across radio an
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 0xc7381ea140c4bbd2dc517d18bef129e30e67d9910a9e641fb63521c9c584a402. Chain 2 (Bitcoin): anchored in block 953888 (2026-06-16T04:55:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0dd8af81-8e3a-4e01-bd74-d634e7495d04.json and https://artists.proofprofile.net/proofs/artist/0dd8af81-8e3a-4e01-bd74-d634e7495d04.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.