Dowa or dōwa may refer to: Dowa, Malawi, a town located in the Central Region of Malawi. Dowa District in Malawi. The Dowa meteorite of 1976, see meteorite falls. Dowa, Nepal, a village developmen
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 0xae2cf333c9682a0ba906d3a6d9a44ef7a8975bd442897b466da48e8e36a80701. Chain 2 (Bitcoin): anchored in block 954500 (2026-06-20T04:47:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9bffb18e-7920-4c22-a8ea-16c5d3824710.json and https://artists.proofprofile.net/proofs/artist/9bffb18e-7920-4c22-a8ea-16c5d3824710.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).