Dola may refer to: Dola (mythology), protective spirits in Polish mythology Dola, Ohio, United States Dola, Shahdol, India Dola, Gabon, a department of Gabon Dola, Burkina Faso Dola Dunsmuir (1
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 0xf173e37ee54f8033019fc4d45d1a80ff2505ed4b4fc6595a11b20017e0594ed5. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f2acce1f-ea95-4c88-a0c7-71b6ad0b2040.json and https://artists.proofprofile.net/proofs/artist/f2acce1f-ea95-4c88-a0c7-71b6ad0b2040.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).