Madi may refer to: Places Madi, Chitwan, a municipality in Chitwan District in Nepal Madi Municipality, Sankhuwasabha, a municipality in Sankhuwasabha District in Nepal Madi Rural Municipality,
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 0x45c6a53631b9c69ad44e9dddee04bc8c950946b1ae95eeb17fcfcd5df6a4e628. Chain 2 (Bitcoin): anchored in block 953899 (2026-06-16T06:37:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/11d8eabd-1184-46cd-a2b9-59747a89c821.json and https://artists.proofprofile.net/proofs/artist/11d8eabd-1184-46cd-a2b9-59747a89c821.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).