Magila (Kata ya Magila, in Swahili) is an administrative ward in Muheza District of Tanga Region in Tanzania. Magoroto and Kicheba wards form the northern boundary of the ward. The Tanganyika ward is
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 0x613fc1181bea938507ff9fe4122db911b3cc7de9342f105aa390252a729b3f4e. Chain 2 (Bitcoin): anchored in block 953599 (2026-06-14T06:43:55Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0e09c659-1d32-460b-b725-2c39322e9bbd.json and https://artists.proofprofile.net/proofs/artist/0e09c659-1d32-460b-b725-2c39322e9bbd.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.