Merk may refer to: Merk (coin), old Scottish coin worth 13 schillings and 4 pence Scots Merkland, old Scottish unit of land measurement Mérk, village in eastern Hungary Merk, Iran, village in 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 0x21556b80efefa8f39b7064d596155d46ca7078ca78a8eb0b146bf8c2f54e2cda. 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/5d3d009d-2830-463e-b6b9-a3d360c5521c.json and https://artists.proofprofile.net/proofs/artist/5d3d009d-2830-463e-b6b9-a3d360c5521c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).