Modus may refer to: Modus, the Latin name for grammatical mood, in linguistics Modus, the Latin name for mode (statistics) Modus (company), an Alberta-based company Modus (medieval music), a term
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 0x5ca61777ec485d2927f36571bcefc209e15cbff4329922495a39667965e522e3. 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/3054d5e3-2a7d-4ce6-9fe0-27823ba22247.json and https://artists.proofprofile.net/proofs/artist/3054d5e3-2a7d-4ce6-9fe0-27823ba22247.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).