AbMAN (Aberdeen Metropolitan Area Network) was one of the regional networks that comprise JANET. AbMAN connected universities and colleges in and around Aberdeen in Scotland to one another and to the
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe472a07989ae36d48127aa938ef46691e87d968ec14a1e83e4c7ec1e795781f9. 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/8ad1a307-00ad-469d-a68f-de2703896b2b.json and https://artists.proofprofile.net/proofs/artist/8ad1a307-00ad-469d-a68f-de2703896b2b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).