Trocar
type: MusicGroup
genre: grindcore
description: thumb|Disposable trocars thumb|Laparoscopic instruments for insertion through trocars A trocar (or trochar) is a medical or veterinary device traditionally used in draining or venting procedures, now
popularity: 3
followers: 782
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xadd3bc75dcee5197e6902d9ac106297d3599870af4721259fe47daf989e28920
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953962
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953962
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/27bf9916-1294-4bd2-8218-a29223b8dd4c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/27bf9916-1294-4bd2-8218-a29223b8dd4c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/27bf9916-1294-4bd2-8218-a29223b8dd4c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T15:03:47Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd3bc75dcee5197e6902d9ac106297d3599870af4721259fe47daf989e28920. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/27bf9916-1294-4bd2-8218-a29223b8dd4c.json and https://artists.proofprofile.net/proofs/artist/27bf9916-1294-4bd2-8218-a29223b8dd4c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T20:07:57Z
album: Four Forfeit Digits
  type: MusicAlbum
  date published: 2022-06-14
album: Wonders Cease
  type: MusicAlbum
  date published: 2022-10-31
album: White Room Torture
  type: MusicAlbum
  date published: 2023-07-28
album: Piecemeal
  type: MusicAlbum
  date published: 2024-03-22
album: Extremities
  type: MusicAlbum
  date published: 2024-04-05