Sleep token
type: MusicGroup
description: Sleep Token are an English rock band formed in London in 2016. Their music has garnered widespread media attention and popularity in recent years due to their esoteric storytelling, vulnerable lyrics,
popularity: 9
followers: 729
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xca6ef1b62609727d0a326f43dc5b39068538c3883dad1a16b21d36e05e7d8d9b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953923
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953923
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1b9ca4c0-7b40-4491-97fd-6e5ee27bfd80.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1b9ca4c0-7b40-4491-97fd-6e5ee27bfd80.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1b9ca4c0-7b40-4491-97fd-6e5ee27bfd80
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T09:51:37Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xca6ef1b62609727d0a326f43dc5b39068538c3883dad1a16b21d36e05e7d8d9b","name":"Sleep token","registered_at":"2026-06-15T23:09:52Z","symbol":"NIM0861394","token_address":"0x5c4540d0a79a0e0b8966a098499469ea81e72e89","type":"artist","uuid":"1b9ca4c0-7b40-4491-97fd-6e5ee27bfd80"}
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 0xca6ef1b62609727d0a326f43dc5b39068538c3883dad1a16b21d36e05e7d8d9b. Chain 2 (Bitcoin): anchored in block 953923 (2026-06-16T09:51:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1b9ca4c0-7b40-4491-97fd-6e5ee27bfd80.json and https://artists.proofprofile.net/proofs/artist/1b9ca4c0-7b40-4491-97fd-6e5ee27bfd80.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T09:51:37Z
  text: {"copyright_id":"0xca6ef1b62609727d0a326f43dc5b39068538c3883dad1a16b21d36e05e7d8d9b","name":"Sleep token","registered_at":"2026-06-15T23:09:52Z","symbol":"NIM0861394","token_address":"0x5c4540d0a79a0e0b8966a098499469ea81e72e89","type":"artist","uuid":"1b9ca4c0-7b40-4491-97fd-6e5ee27bfd80"}
album: Aqua regia (Matthew Hektor Remix)
  type: MusicAlbum
  date published: 2024-04-19