Alkan may refer to: People Alkan (name), list of people with the name Charles-Valentin Alkan Places Iran Alkan, Kohgiluyeh and Boyer-Ahmad Alkan, Qom Turkey Alkan, Gülşehir, in Gülşehir distric
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 0x81465fe87d60d8d2e6284fd47cdeebedbbd38df19b585e394e16f0ad260cb8b9. Chain 2 (Bitcoin): anchored in block 954689 (2026-06-21T10:35:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e300effb-b8f3-4713-be18-3d3dae642fa9.json and https://artists.proofprofile.net/proofs/artist/e300effb-b8f3-4713-be18-3d3dae642fa9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).