cerberus
type: MusicGroup
genre: doom metal
genre: sludge metal
genre: stoner rock
description: thumb|right|Heracles, wearing his characteristic lion-skin, club in right hand, leash in left, presenting a three-headed Cerberus, snakes coiling from his snouts, necks and front paws, to a frightened
popularity: 4
followers: 90
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x860430642821f95e7942815249e794623ce39cef2af94ccc2a3e345945f00955
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954784
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954784
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e39a08a6-35cc-46d6-9eaf-9cf456350f4d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e39a08a6-35cc-46d6-9eaf-9cf456350f4d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e39a08a6-35cc-46d6-9eaf-9cf456350f4d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-22T02:53:59Z
additional property: OTSCanonicalRecord
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x860430642821f95e7942815249e794623ce39cef2af94ccc2a3e345945f00955. 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/e39a08a6-35cc-46d6-9eaf-9cf456350f4d.json and https://artists.proofprofile.net/proofs/artist/e39a08a6-35cc-46d6-9eaf-9cf456350f4d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-22T02:53:59Z
album: Taste
  type: MusicAlbum
  date published: 2024-08-23
album: Suspiria
  type: MusicAlbum
  date published: 2024-12-12
album: Summon
  type: MusicAlbum
  date published: 2025-03-28