KFF REC
type: MusicGroup
genre: drill
popularity: 6
followers: 138
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbc66f3ef7c42daa9276b0e66981d2908dfe21f4d390c8e66e371a609ace776e9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/520f7040-4a4e-4443-8c89-f5e479a62ab5.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/520f7040-4a4e-4443-8c89-f5e479a62ab5.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/520f7040-4a4e-4443-8c89-f5e479a62ab5
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xbc66f3ef7c42daa9276b0e66981d2908dfe21f4d390c8e66e371a609ace776e9","name":"KFF REC","registered_at":"2026-06-16T18:16:45Z","symbol":"NIM1135165","token_address":"0xb57c6323639c0bd410bcc23afd7297b6db872779","type":"artist","uuid":"520f7040-4a4e-4443-8c89-f5e479a62ab5"}
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 0xbc66f3ef7c42daa9276b0e66981d2908dfe21f4d390c8e66e371a609ace776e9. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/520f7040-4a4e-4443-8c89-f5e479a62ab5.json and https://artists.proofprofile.net/proofs/artist/520f7040-4a4e-4443-8c89-f5e479a62ab5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0xbc66f3ef7c42daa9276b0e66981d2908dfe21f4d390c8e66e371a609ace776e9","name":"KFF REC","registered_at":"2026-06-16T18:16:45Z","symbol":"NIM1135165","token_address":"0xb57c6323639c0bd410bcc23afd7297b6db872779","type":"artist","uuid":"520f7040-4a4e-4443-8c89-f5e479a62ab5"}
album: Vamos Fugir
  type: MusicAlbum
  date published: 2021-01-18
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  type: MusicAlbum
  date published: 2022-07-22
album: Mais do Que Sou
  type: MusicAlbum
  date published: 2023-06-25
album: Pobre Louco
  type: MusicAlbum
  date published: 2023-10-01
album: 1995
  type: MusicAlbum
  date published: 2024-02-11