Nembrionic was a Dutch death metal band. They were formed in 1991 under the name Nembrionic Hammerdeath as a black metal band; they changed their name to Nembrionic in 1993. The band released three al
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25a84127b1695db97e5ce802bab599044d434613336c9aff43a456d0abcc87f. 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/a385269e-43cb-4657-adfb-8b6706c0c420.json and https://artists.proofprofile.net/proofs/artist/a385269e-43cb-4657-adfb-8b6706c0c420.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).