The Mudi is a herding dog breed from Hungary. It is closely related to the Puli and Pumi, from which it was separated in the 1930s. They continue to be used in herding, as well as participating in a v
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 0x0bd1b8d7de12749e9b639a42dd250a436160cf7e1e3aad9475035232fc35017e. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c1c9ff2c-addb-47ee-bf29-69f372b8a850.json and https://artists.proofprofile.net/proofs/artist/c1c9ff2c-addb-47ee-bf29-69f372b8a850.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).