GWM or gwm may refer to: Great Wall Motor, a Chinese automobile manufacturer Awngthim language (ISO 639-3 code), Queensland, Australia Gannavaram railway station (Indian Railways station code), An
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 0xbd7876fb46a5b2aad8677b7c30dec80c0a3c2231507bb9965992171d80b6bceb. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/898ac391-0a54-4e8d-8da0-7d032d4b64c7.json and https://artists.proofprofile.net/proofs/artist/898ac391-0a54-4e8d-8da0-7d032d4b64c7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).