Cafe Sounds
type: MusicGroup
popularity: 7
followers: 161
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc5c8fe9ad579119cb65016007a18affa021d5de521e08237105f086d09e83b6e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953968
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953968
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2998e890-b3c3-4fd3-8d53-40bd13c03e74.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2998e890-b3c3-4fd3-8d53-40bd13c03e74.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2998e890-b3c3-4fd3-8d53-40bd13c03e74
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T16:01:49Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc5c8fe9ad579119cb65016007a18affa021d5de521e08237105f086d09e83b6e","name":"Cafe Sounds","registered_at":"2026-06-16T04:00:46Z","symbol":"NIM0930878","token_address":"0x4efaf90997f0b063053832ffd9999c351ed5ff32","type":"artist","uuid":"2998e890-b3c3-4fd3-8d53-40bd13c03e74"}
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 0xc5c8fe9ad579119cb65016007a18affa021d5de521e08237105f086d09e83b6e. Chain 2 (Bitcoin): anchored in block 953968 (2026-06-16T16:01:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2998e890-b3c3-4fd3-8d53-40bd13c03e74.json and https://artists.proofprofile.net/proofs/artist/2998e890-b3c3-4fd3-8d53-40bd13c03e74.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T16:01:49Z
  text: {"copyright_id":"0xc5c8fe9ad579119cb65016007a18affa021d5de521e08237105f086d09e83b6e","name":"Cafe Sounds","registered_at":"2026-06-16T04:00:46Z","symbol":"NIM0930878","token_address":"0x4efaf90997f0b063053832ffd9999c351ed5ff32","type":"artist","uuid":"2998e890-b3c3-4fd3-8d53-40bd13c03e74"}
album: Cafe Sounds for Learning
  type: MusicAlbum
  date published: 2020-09-18