Markéta Irglová () (born 28 February 1988) is a Czech-Icelandic singer-songwriter, musician, and actress, who starred in the 2007 film Once, which earned her a number of major awards, including the Ac
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 0x500f3e6be6f83a42643eb9d817047e04495990d720f2a40b3cc5fb81f98e6773. Chain 2 (Bitcoin): anchored in block 954587 (2026-06-20T19:10:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bc099e40-b99a-4927-ad32-63ff167a2faf.json and https://artists.proofprofile.net/proofs/artist/bc099e40-b99a-4927-ad32-63ff167a2faf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).