Sleep Cub
type: MusicGroup
popularity: 3
followers: 31
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8e3759305f06ba6efc169123acd9034788b2d37ba4a1f91cc41114f75abc2d1b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954647
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954647
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d752858a-bd16-4f34-bb9f-8abb8bc96604.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d752858a-bd16-4f34-bb9f-8abb8bc96604.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d752858a-bd16-4f34-bb9f-8abb8bc96604
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T04:36:58Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8e3759305f06ba6efc169123acd9034788b2d37ba4a1f91cc41114f75abc2d1b","name":"Sleep Cub","registered_at":"2026-06-21T03:15:28Z","symbol":"NIM1803222","token_address":"0x7bf7bef6e23f5e171350e99db0d03e548413ae26","type":"artist","uuid":"d752858a-bd16-4f34-bb9f-8abb8bc96604"}
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 0x8e3759305f06ba6efc169123acd9034788b2d37ba4a1f91cc41114f75abc2d1b. Chain 2 (Bitcoin): anchored in block 954647 (2026-06-21T04:36:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d752858a-bd16-4f34-bb9f-8abb8bc96604.json and https://artists.proofprofile.net/proofs/artist/d752858a-bd16-4f34-bb9f-8abb8bc96604.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T04:36:58Z
  text: {"copyright_id":"0x8e3759305f06ba6efc169123acd9034788b2d37ba4a1f91cc41114f75abc2d1b","name":"Sleep Cub","registered_at":"2026-06-21T03:15:28Z","symbol":"NIM1803222","token_address":"0x7bf7bef6e23f5e171350e99db0d03e548413ae26","type":"artist","uuid":"d752858a-bd16-4f34-bb9f-8abb8bc96604"}
album: Still Waters Run Deep
  type: MusicAlbum
  date published: 2020-04-19
album: She Walks in Beauty
  type: MusicAlbum
  date published: 2020-04-22
album: Aurora
  type: MusicAlbum
  date published: 2020-06-06