Keys Café
type: MusicGroup
popularity: 2
followers: 2
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd3bc5db6a8a36d946cb14ee414bb9beee4374b2ca2e331c7d123365449e64138
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954705
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954705
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ecdb4bcc-8675-4d99-b853-646bfc6aca03.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ecdb4bcc-8675-4d99-b853-646bfc6aca03.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ecdb4bcc-8675-4d99-b853-646bfc6aca03
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T13:42:37Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd3bc5db6a8a36d946cb14ee414bb9beee4374b2ca2e331c7d123365449e64138","name":"Keys Café","registered_at":"2026-06-21T11:06:20Z","symbol":"NIM1906897","token_address":"0xc124b4a9483d0cd9f43e9fc5def8229b29b478f6","type":"artist","uuid":"ecdb4bcc-8675-4d99-b853-646bfc6aca03"}
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3bc5db6a8a36d946cb14ee414bb9beee4374b2ca2e331c7d123365449e64138. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ecdb4bcc-8675-4d99-b853-646bfc6aca03.json and https://artists.proofprofile.net/proofs/artist/ecdb4bcc-8675-4d99-b853-646bfc6aca03.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T13:42:37Z
  text: {"copyright_id":"0xd3bc5db6a8a36d946cb14ee414bb9beee4374b2ca2e331c7d123365449e64138","name":"Keys Café","registered_at":"2026-06-21T11:06:20Z","symbol":"NIM1906897","token_address":"0xc124b4a9483d0cd9f43e9fc5def8229b29b478f6","type":"artist","uuid":"ecdb4bcc-8675-4d99-b853-646bfc6aca03"}
album: Invisible Ballet
  type: MusicAlbum
  date published: 2023-07-14
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  type: MusicAlbum
  date published: 2023-08-11
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  type: MusicAlbum
  date published: 2023-10-13
album: Solace in Ivory
  type: MusicAlbum
  date published: 2024-02-16
album: Piano's Harmony
  type: MusicAlbum
  date published: 2024-03-22
album: Melodic Nocturne
  type: MusicAlbum
  date published: 2024-04-19