Bombarda, or Sbirulino, is a type of weighted float used in rod and reel fishing. The main line is passed through the bombarda. The end of the main line is tied to a swivel, while the other end of the
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 0xc99969869e73c078c87eeb54b3757811c7c95c55f596cf22a312a6e9c5b4126b. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6dbcb75b-8ffe-4753-a7b2-e5d137972be3.json and https://artists.proofprofile.net/proofs/artist/6dbcb75b-8ffe-4753-a7b2-e5d137972be3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).