PIECE
type: MusicGroup
genre: doom metal
genre: sludge metal
description: Piece or Pieces (not to be confused with peace) may refer to: Arts, entertainment, and media Games Piece (chess), pieces deployed on a chessboard for playing the game of chess Pieces (video game),
popularity: 2
followers: 634
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0cae71b86f46d59981bc1cf6d04a8ccabb9a64776b115b776827ec4dcd1b4883
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4ce12470-ce33-4fbc-ab49-a50ac6c8f594.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4ce12470-ce33-4fbc-ab49-a50ac6c8f594.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/4ce12470-ce33-4fbc-ab49-a50ac6c8f594
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
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 0x0cae71b86f46d59981bc1cf6d04a8ccabb9a64776b115b776827ec4dcd1b4883. 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/4ce12470-ce33-4fbc-ab49-a50ac6c8f594.json and https://artists.proofprofile.net/proofs/artist/4ce12470-ce33-4fbc-ab49-a50ac6c8f594.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
album: PIECE
  type: MusicAlbum
  date published: 2017-07-21
album: Split with Empress
  type: MusicAlbum
  date published: 2018-10-26
album: Titan Age
  type: MusicAlbum
  date published: 2021-01-20
album: Sarnath
  type: MusicAlbum
  date published: 2023-07-20
album: Ancient Greed
  type: MusicAlbum
  date published: 2023-09-14
album: Spheres
  type: MusicAlbum
  date published: 2024-06-06
album: Demigod
  type: MusicAlbum
  date published: 2025-05-01
album: Bastard Sword
  type: MusicAlbum
  date published: 2025-07-12
album: Rambler's Axe
  type: MusicAlbum
  date published: 2025-09-05