Shuster (originally a spelling variant of Schuster) is the surname of several people: Bill Shuster, American politician from Pennsylvania Bud Shuster, American politician and Bill Shuster's father Dav
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 0x18b8bd38f404f87182982a10c7f864278f5a26e192a31802731b34357d561cf1. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5a9677c6-1f4e-4dce-908e-f4ebc5798965.json and https://artists.proofprofile.net/proofs/artist/5a9677c6-1f4e-4dce-908e-f4ebc5798965.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).