Axel may refer to: People Axel (name), all persons with the name Places Axel, Netherlands, a town Capture of Axel, a battle at Axel in 1586 Arts, entertainment, media Axel, a 1988 short film b
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 0x81f1ffb5bd6b1af8f2a2dc3548fa2ebe45332b53e7c19e88fa28f17bfbe91ef2. 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/840ac032-e6cb-49b3-a244-936c55ee0dd3.json and https://artists.proofprofile.net/proofs/artist/840ac032-e6cb-49b3-a244-936c55ee0dd3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).