Tatau is a town, and the capital of the Tatau District in Bintulu Division, Sarawak, Malaysia. The district's reported total population for Tatau was 31,920 in 2020. Tatau became a district in 1987. B
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 0xfbce5a8bf990f164edf595ad0ae98b646405ccff85498c21968e728b7ee31d8d. Chain 2 (Bitcoin): anchored in block 954097 (2026-06-17T13:13:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7ae45b44-bd28-43ae-9096-fa2dbe698263.json and https://artists.proofprofile.net/proofs/artist/7ae45b44-bd28-43ae-9096-fa2dbe698263.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).