Nebbi is a town in the Nebbi District of the Northern Region of Uganda. It is the site of the district headquarters. Location Nebbi is located in the West Nile sub-region, along the Karuma–Olwiyo–Pak
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 0x03ac656be0ad6d2e41d6a556190cc5202f78023e52408af4ea0ef5a7890cb655. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c91f45ab-c801-4392-ba8e-aeeecca6e612.json and https://artists.proofprofile.net/proofs/artist/c91f45ab-c801-4392-ba8e-aeeecca6e612.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).