Maraña () is a small village in Spain in the province of León, in the Picos de Europa, close to Asturias. The major festival is August 15, the Festival of Our Lady of Riosol See also Kingdom of Le
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 0x7dc5d760c01e46ef6b5cf497096eefc531a9fe99cf25ab57b8cc563ea581887f. Chain 2 (Bitcoin): anchored in block 954035 (2026-06-17T02:39:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3d223c63-8fc3-4169-bf53-53d87b49e12d.json and https://artists.proofprofile.net/proofs/artist/3d223c63-8fc3-4169-bf53-53d87b49e12d.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.