R10 can refer to: HMS Indefatigable (R10) Radial Road 10 or R-10, an arterial road of Manila, Philippines R10 (New York City Subway car) R10: Flammable, a risk phrase Audi R10 TDI, a sports protot
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 0x21eaf7f5fef5ad01aaa3c510c2364d3250454c31490c80224dc97060e78bf0f8. Chain 2 (Bitcoin): anchored in block 953918 (2026-06-16T08:55:04Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1af7d97a-f338-4b15-934f-1271ddac2e21.json and https://artists.proofprofile.net/proofs/artist/1af7d97a-f338-4b15-934f-1271ddac2e21.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).