Hollowman is an EP by Swedish death metal band Entombed, released via Earache Records in 1993. The 1996 reissue featured the bonus track "God of Thunder" which was previously released on the "Out of H
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 0xf7cd535ea1af3a258e8f5f921633f293e2bb418db79a0556e2e0fa8135b56e7d. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5e4251af-6092-4db3-a3c0-c89edb5ed388.json and https://artists.proofprofile.net/proofs/artist/5e4251af-6092-4db3-a3c0-c89edb5ed388.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).