Küma
type: MusicGroup
popularity: 2
followers: 105
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6fd320eb5c39d508a0d76fc15dbd3ef5a5e49526d1aca61c09220e2080c3a731
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/eb83bb2d-3403-4cab-85f0-b743214042a7.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/eb83bb2d-3403-4cab-85f0-b743214042a7.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/eb83bb2d-3403-4cab-85f0-b743214042a7
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T13:42:37Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6fd320eb5c39d508a0d76fc15dbd3ef5a5e49526d1aca61c09220e2080c3a731","name":"Küma","registered_at":"2026-06-21T10:38:17Z","symbol":"NIM1900318","token_address":"0xe935b1fd7429e147a414fb4aa748306530dd794e","type":"artist","uuid":"eb83bb2d-3403-4cab-85f0-b743214042a7"}
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 0x6fd320eb5c39d508a0d76fc15dbd3ef5a5e49526d1aca61c09220e2080c3a731. 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/eb83bb2d-3403-4cab-85f0-b743214042a7.json and https://artists.proofprofile.net/proofs/artist/eb83bb2d-3403-4cab-85f0-b743214042a7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T13:42:37Z
  text: {"copyright_id":"0x6fd320eb5c39d508a0d76fc15dbd3ef5a5e49526d1aca61c09220e2080c3a731","name":"Küma","registered_at":"2026-06-21T10:38:17Z","symbol":"NIM1900318","token_address":"0xe935b1fd7429e147a414fb4aa748306530dd794e","type":"artist","uuid":"eb83bb2d-3403-4cab-85f0-b743214042a7"}
album: Stand
  type: MusicAlbum
  date published: 2023-01-06
album: La naissance de l'Ours
  type: MusicAlbum
  date published: 2023-05-04
album: Marabout
  type: MusicAlbum
  date published: 2023-12-14
album: Éveil
  type: MusicAlbum
  date published: 2024-04-04
album: Aube
  type: MusicAlbum
  date published: 2024-12-19