Axioma (/ˌæksiˈoʊmə/; pronounced AK-see-oh-mə) from the root word Axiom is an American dark metal band from Cleveland, Ohio, formed in 2015. The band is known for combining Death Metal, post-black met
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 0xbee76dff37cf88d0c8d8def97808ae9f92be5eec181e692df6e0cd1a621c6f75. 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/87b0c304-dc26-4123-b0d6-d0e98134751f.json and https://artists.proofprofile.net/proofs/artist/87b0c304-dc26-4123-b0d6-d0e98134751f.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.