The city of Warri is an oil hub within South-South Nigeria and houses an annex of the Delta State Government House. Warri is one of the major hubs of the petroleum industry in Nigeria. Warri, Udu, Okp
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 0x006598de17aba17c4737dca5381f103887ca329b3e84bf58d5125863fdfd6f6e. Chain 2 (Bitcoin): anchored in block 953885 (2026-06-16T04:12:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0ad95aab-7f27-4cfd-a121-6c1907818c9d.json and https://artists.proofprofile.net/proofs/artist/0ad95aab-7f27-4cfd-a121-6c1907818c9d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).