HALF SLICE
type: MusicGroup
popularity: 4
followers: 19
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0457e4638851ac2d1ed92e020ab49cecc93d98c9db0b806008582b851e1d39aa
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954569
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954569
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b0f2f362-9ae1-413c-b691-32328677799e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b0f2f362-9ae1-413c-b691-32328677799e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b0f2f362-9ae1-413c-b691-32328677799e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T14:36:29Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0457e4638851ac2d1ed92e020ab49cecc93d98c9db0b806008582b851e1d39aa","name":"HALF SLICE","registered_at":"2026-06-20T12:15:58Z","symbol":"NIM1610945","token_address":"0x11f2cc360618f809a7aa55b2bfeab92f7278e695","type":"artist","uuid":"b0f2f362-9ae1-413c-b691-32328677799e"}
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 0x0457e4638851ac2d1ed92e020ab49cecc93d98c9db0b806008582b851e1d39aa. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b0f2f362-9ae1-413c-b691-32328677799e.json and https://artists.proofprofile.net/proofs/artist/b0f2f362-9ae1-413c-b691-32328677799e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T14:36:29Z
  text: {"copyright_id":"0x0457e4638851ac2d1ed92e020ab49cecc93d98c9db0b806008582b851e1d39aa","name":"HALF SLICE","registered_at":"2026-06-20T12:15:58Z","symbol":"NIM1610945","token_address":"0x11f2cc360618f809a7aa55b2bfeab92f7278e695","type":"artist","uuid":"b0f2f362-9ae1-413c-b691-32328677799e"}