Growl of Clown (often abbreviated as G.O.C) is a Mongolian deathcore band formed in 2014. They formed a band and prepared their first songs and music in a Mongolian Yurt at a traditional cattle farm.
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 0x723f03fad20a595ad7a926e86b7ca999f301ea12c1b42b2dbe9653dfd86f7d7a. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e03a2141-78b2-42ac-9df2-16bb9f8d9f0f.json and https://artists.proofprofile.net/proofs/artist/e03a2141-78b2-42ac-9df2-16bb9f8d9f0f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).