Mura or MURA may refer to: Places Mura (Drava), a river in Austria, Hungary, Slovenia and Croatia Mura (Angara), a river in Russia Mura, Spain, a municipality near Barcelona, Catalonia Mura, Lomb
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 0xb370ab89dbb5a53fb146fd0a7c77b88885b57c40bcaf685534431cf206b3dd39. Chain 2 (Bitcoin): anchored in block 954593 (2026-06-20T19:46:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/be209b89-b355-43db-a60c-9dea855f8ef1.json and https://artists.proofprofile.net/proofs/artist/be209b89-b355-43db-a60c-9dea855f8ef1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).