thumb|7.5×55mm Swiss full metal jacket, armor piercing, tracer, and spitzer projectiles. The three bullets on the right show cannelure evolution. thumb|Schlieren image sequence of a bullet traveling i
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 0xe92b24676c188ccf47efc8acc21b5e9e9b0920e25513276ef93605927c84d720. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/106cfb4a-020f-46a7-a98c-37a50ff3892f.json and https://artists.proofprofile.net/proofs/artist/106cfb4a-020f-46a7-a98c-37a50ff3892f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).