Coma Hole
type: MusicGroup
genre: doom metal
genre: sludge metal
genre: stoner rock
popularity: 3
followers: 1096
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5a9e34baebe016095f0ae68022a42b09e8eb3e97086854c4b8d21d97a8bbed9a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954603
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954603
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bfd7e918-c0a8-40f0-bbc2-856be1ea7af6.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bfd7e918-c0a8-40f0-bbc2-856be1ea7af6.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/bfd7e918-c0a8-40f0-bbc2-856be1ea7af6
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T21:47:54Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x5a9e34baebe016095f0ae68022a42b09e8eb3e97086854c4b8d21d97a8bbed9a","name":"Coma Hole","registered_at":"2026-06-20T18:57:08Z","symbol":"NIM1683097","token_address":"0x56c757224d0c852f4bdffecaac01c3ff35f2f380","type":"artist","uuid":"bfd7e918-c0a8-40f0-bbc2-856be1ea7af6"}
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 0x5a9e34baebe016095f0ae68022a42b09e8eb3e97086854c4b8d21d97a8bbed9a. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bfd7e918-c0a8-40f0-bbc2-856be1ea7af6.json and https://artists.proofprofile.net/proofs/artist/bfd7e918-c0a8-40f0-bbc2-856be1ea7af6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T21:47:54Z
  text: {"copyright_id":"0x5a9e34baebe016095f0ae68022a42b09e8eb3e97086854c4b8d21d97a8bbed9a","name":"Coma Hole","registered_at":"2026-06-20T18:57:08Z","symbol":"NIM1683097","token_address":"0x56c757224d0c852f4bdffecaac01c3ff35f2f380","type":"artist","uuid":"bfd7e918-c0a8-40f0-bbc2-856be1ea7af6"}
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  date published: 2022-02-25
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