SF Klan
type: MusicGroup
popularity: 6
followers: 114
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf0b5e81e49cc9c8de6976f703f32d9791aba8ee21e52d7933e81684e1fac5a6c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954027
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954027
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3980b891-7d90-4b3f-8c35-baf2e42546bc.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3980b891-7d90-4b3f-8c35-baf2e42546bc.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/3980b891-7d90-4b3f-8c35-baf2e42546bc
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T00:55:08Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf0b5e81e49cc9c8de6976f703f32d9791aba8ee21e52d7933e81684e1fac5a6c","name":"SF Klan","registered_at":"2026-06-16T09:37:20Z","symbol":"NIM1011242","token_address":"0x7816b5d148e7a315cb3ffe9a80b8687660b85339","type":"artist","uuid":"3980b891-7d90-4b3f-8c35-baf2e42546bc"}
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 0xf0b5e81e49cc9c8de6976f703f32d9791aba8ee21e52d7933e81684e1fac5a6c. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3980b891-7d90-4b3f-8c35-baf2e42546bc.json and https://artists.proofprofile.net/proofs/artist/3980b891-7d90-4b3f-8c35-baf2e42546bc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xf0b5e81e49cc9c8de6976f703f32d9791aba8ee21e52d7933e81684e1fac5a6c","name":"SF Klan","registered_at":"2026-06-16T09:37:20Z","symbol":"NIM1011242","token_address":"0x7816b5d148e7a315cb3ffe9a80b8687660b85339","type":"artist","uuid":"3980b891-7d90-4b3f-8c35-baf2e42546bc"}
album: First Love
  type: MusicAlbum
  date published: 2023-05-30
  track: First Love
    type: MusicRecording
    duration: PT4M23S
    duration ms: 263105
    explicit: false
    by artist: SF Klan
    in album: First Love
      type: MusicAlbum
      date published: 2023-05-30
    isrc code: QZXLZ2305615
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T01:23:59+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x7ba2ae4637a5452a27f2399285d6727250191d0d559a8204cd08c755869f66cb
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956748
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956748
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZXLZ2305615
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T05:55:59Z
    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba2ae4637a5452a27f2399285d6727250191d0d559a8204cd08c755869f66cb. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZXLZ2305615.
      date published: 2026-07-05T05:55:59Z
    audio: First Love
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 180.278
      additional property: Musical Key
        type: PropertyValue
        value: 8
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.44
      additional property: Energy
        type: PropertyValue
        value: 0.447
      additional property: Speechiness
        type: PropertyValue
        value: 0.029
      additional property: Acousticness
        type: PropertyValue
        value: 0.544
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.098
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.251
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.932
      additional property: Key Name
        type: PropertyValue
        value: Ab
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: First Love
  type: MusicAlbum
  date published: 2023-05-30
album: En Otra Vida (En Vivo)
  type: MusicAlbum
  date published: 2024-11-28
album: Reir Pa' No Llorar
  type: MusicAlbum
  date published: 2024-12-03