Dave Jonathan Lamar (born December 20, 1992) is a Filipino singer, songwriter, record producer, and director. Early life Dave Jonathan Lamar was born on December 20, 1992, in Manila, Philippines. H
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 0xf037307609be20d31a838277e8f9ce13b96213afa7b0e8622fdf20b5465ee0e3. Chain 2 (Bitcoin): anchored in block 953588 (2026-06-14T04:52:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/00d2b21a-8ad4-4438-82e3-c3699da92419.json and https://artists.proofprofile.net/proofs/artist/00d2b21a-8ad4-4438-82e3-c3699da92419.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).