Arma, ARMA or variants, may refer to: Places Arma, Kansas, United States Arma, Nepal Arma District, Peru Arma District, Yemen Arma Mountains, Afghanistan People Arma people, an ethnic group of
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 0xfc291278da31e1ed3dea98ac19bb500ecf69275e960cd762ecc13793a1fd313a. Chain 2 (Bitcoin): anchored in block 953678 (2026-06-14T19:23:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/62d5ebf2-54de-49c8-8c6d-854d0dc6c4bb.json and https://artists.proofprofile.net/proofs/artist/62d5ebf2-54de-49c8-8c6d-854d0dc6c4bb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).