thumb|The Drowning Men The Drowning Men is an American indie-rock quintet from Oceanside, California. The members are Nato Bardeen (vocals, keyboards, guitar, mandolin), James Smith (lead guitar, vo
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 0x4d48d7f56f3b86f4639b043e19c843edd670fd661648ab6d328a7e8d61c20db9. Chain 2 (Bitcoin): anchored in block 954638 (2026-06-21T03:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d4f8fb54-4b08-4ad5-818b-df1844d2783d.json and https://artists.proofprofile.net/proofs/artist/d4f8fb54-4b08-4ad5-818b-df1844d2783d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).