M7, M-7, or M.7 may refer to: Transportation Air M7 Aerospace, a United States aerospace company Macchi M.7, an Italian flying boat fighter in service from 1923 to 1930 Miles M.7 Nighthawk, a 1930
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 0x072a3e28921e3ee068c5260777fbb6326b050398f9918ab36339d99cfd2dc651. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bcd24dfe-5878-4751-85a6-0c3e59fb09d7.json and https://artists.proofprofile.net/proofs/artist/bcd24dfe-5878-4751-85a6-0c3e59fb09d7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Major plays feat. LUMINARY, N8TH & CARMER[