Fal or FAL may refer to: Places Fal, Fars, a village in Iran Fal, South Khorasan, a village in Iran Fal Rural District, Fars Province, Iran Fál or Inis Fáil, an ancient name for Ireland River
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 0x7840409e806bda5bd4cee439e9972790db44fe785200e3dddd9094abe8627f6a. Chain 2 (Bitcoin): anchored in block 954623 (2026-06-20T23:40:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cb16a9a7-f5c6-4b18-8c22-98b4a84ccaff.json and https://artists.proofprofile.net/proofs/artist/cb16a9a7-f5c6-4b18-8c22-98b4a84ccaff.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).