Metrolink, MetroLink, or Metro-link is the name of several transport services throughout the world: Australia Metro-link Bus Lines, a bus operator in Sydney, New South Wales TransdevTSL, formerly k
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 0x9a519485b73e6226dece7ce48320b200ea8431bcbb0fb39134a63105466cfbb0. 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/60ac90df-f5b1-4994-959f-e7c47fa817ac.json and https://artists.proofprofile.net/proofs/artist/60ac90df-f5b1-4994-959f-e7c47fa817ac.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).