Foz () is a town and municipality in the A Mariña Central comarca in the Galician province of Lugo. It has been historically linked to the Ancient Province of Mondoñedo and also linked to the arrival
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2215c9bcb1c7390a4890713b8b9e50b984d02e80169cac2a0cd312ab7a705d05. Chain 2 (Bitcoin): anchored in block 954014 (2026-06-16T22:46:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2b141073-3892-4ca3-b596-b03e765d2ce5.json and https://artists.proofprofile.net/proofs/artist/2b141073-3892-4ca3-b596-b03e765d2ce5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).