Eska may refer to: Eska (band) 1990s Glasgow band Eska (singer) 2010s singer Eska (album), her debut album Eska TV Eska Rock Eska Water Radio Eska, Polish radio network Eska Awards Joseph F. Eska, li
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 0xf2251319ccbb998d4ec1b14f0ae0a221143aaaba2d9869959edc882ae8c9375b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/acdc1952-5d8f-41a4-862a-35a48710c683.json and https://artists.proofprofile.net/proofs/artist/acdc1952-5d8f-41a4-862a-35a48710c683.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).