D14 may refer to: Vehicles Aircraft Dewoitine D.14, a French transport aircraft Fokker D.XIV, a Dutch fighter aircraft Ships , a G- and H-class destroyer of the Royal Hellenic Navy , a Battle-c
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 0x1999ec36fa665fc115bcb61f378f0104d1d9efb184f11359081b222448936b2d. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6d7a0f92-4708-4fe2-a465-cd67fd5761d9.json and https://artists.proofprofile.net/proofs/artist/6d7a0f92-4708-4fe2-a465-cd67fd5761d9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).