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 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 0x9a60ae8280414ee60c07a931856f8596da4ed9f19c1e329d16acf18d676a7f53. 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/60677081-5708-4475-b795-1afed3c02992.json and https://artists.proofprofile.net/proofs/artist/60677081-5708-4475-b795-1afed3c02992.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).