The Dynamic Rockers is a Dutch rock and roll band from Tilburg formed in 1954 by Henk van Broekhoven aka Hank Brooklyn later known as John Spencer, Sjef Haans, Peter Smulders and Peter van den Heuvel.
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 0x850f4da4d875609238948273e98552c4f7f88336ca899c5e5d5674bc4449777b. 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/d4b2b363-17ed-4d7f-bba8-0f6a5e950a08.json and https://artists.proofprofile.net/proofs/artist/d4b2b363-17ed-4d7f-bba8-0f6a5e950a08.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).