thumb|Bobblehead figures A bobblehead, also known by nicknames such as nodder, wobbler, or wacky wobbler, is a type of small collectible figurine. Its head is often oversized compared to its body. In
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 0xa3286a658b43030bcb641227ad1f5507aec4664b64dcdf606a00eedc23982382. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a482a120-8fa7-4e9f-905a-979e76e940e5.json and https://artists.proofprofile.net/proofs/artist/a482a120-8fa7-4e9f-905a-979e76e940e5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).