J10 may refer to: Vehicles Aircraft Chengdu J-10, a Chinese fighter aircraft Junkers J 10, a German ground attack aircraft Automobiles Jeep J10, an American pickup truck Karsan J10, a Turk
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 0x2b9a946e04121331ce0a88d3215d9122741b6402f0bca7e3e3e1fdb6bfef6c98. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e82103c7-758e-4660-9d67-7ca95b606d54.json and https://artists.proofprofile.net/proofs/artist/e82103c7-758e-4660-9d67-7ca95b606d54.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).