DMAN, also known as Departure Manager is a planning tool developed to improve the departure flows at airports and increase the predictability. DMAN calculates the Target Take Off Times (TTOT) and 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 0xaf4ca23b811cb721f1b96f5e2ce602e08ae9473bed4a3d42abca014f1571c979. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7ef6672b-bd20-4c46-81ba-5b7359444401.json and https://artists.proofprofile.net/proofs/artist/7ef6672b-bd20-4c46-81ba-5b7359444401.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).