Kefo Produce
type: MusicGroup
genre: alternative pop
popularity: 4
followers: 5
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x75d38565aabb47958aadeffc62fb3984dbbc6e202cf188513997f91a0d4acb90
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/2874e9e9-f4fa-4d32-b4bf-edce974bece7.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2874e9e9-f4fa-4d32-b4bf-edce974bece7.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2874e9e9-f4fa-4d32-b4bf-edce974bece7
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T16:01:49Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x75d38565aabb47958aadeffc62fb3984dbbc6e202cf188513997f91a0d4acb90","name":"Kefo Produce","registered_at":"2026-06-16T03:35:36Z","symbol":"NIM0924854","token_address":"0x3f09552a5cd6e8f8d7f056a78ce9f618f67df036","type":"artist","uuid":"2874e9e9-f4fa-4d32-b4bf-edce974bece7"}
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 0x75d38565aabb47958aadeffc62fb3984dbbc6e202cf188513997f91a0d4acb90. 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/2874e9e9-f4fa-4d32-b4bf-edce974bece7.json and https://artists.proofprofile.net/proofs/artist/2874e9e9-f4fa-4d32-b4bf-edce974bece7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T16:01:49Z
  text: {"copyright_id":"0x75d38565aabb47958aadeffc62fb3984dbbc6e202cf188513997f91a0d4acb90","name":"Kefo Produce","registered_at":"2026-06-16T03:35:36Z","symbol":"NIM0924854","token_address":"0x3f09552a5cd6e8f8d7f056a78ce9f618f67df036","type":"artist","uuid":"2874e9e9-f4fa-4d32-b4bf-edce974bece7"}
album: Kefo Produce
  type: MusicAlbum
  date published: 2025-08-17