Franc Castillejos
type: MusicGroup
popularity: 20
followers: 1098
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc561b993e7e8a73debb1e855ee888d4fa07345a15e92cb9addb41f3c8b5f7e3c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953662
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953662
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/55dbd650-26bc-4df5-9868-08a28151c1aa.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/55dbd650-26bc-4df5-9868-08a28151c1aa.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/55dbd650-26bc-4df5-9868-08a28151c1aa
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T17:28:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc561b993e7e8a73debb1e855ee888d4fa07345a15e92cb9addb41f3c8b5f7e3c","name":"Franc Castillejos","registered_at":"2026-06-14T13:30:06Z","symbol":"NIM0467732","token_address":"0x53bc8d670081dc2a55fc3638800baa373779a613","type":"artist","uuid":"55dbd650-26bc-4df5-9868-08a28151c1aa"}
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 0xc561b993e7e8a73debb1e855ee888d4fa07345a15e92cb9addb41f3c8b5f7e3c. Chain 2 (Bitcoin): anchored in block 953662 (2026-06-14T17:28:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/55dbd650-26bc-4df5-9868-08a28151c1aa.json and https://artists.proofprofile.net/proofs/artist/55dbd650-26bc-4df5-9868-08a28151c1aa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T17:28:39Z
  text: {"copyright_id":"0xc561b993e7e8a73debb1e855ee888d4fa07345a15e92cb9addb41f3c8b5f7e3c","name":"Franc Castillejos","registered_at":"2026-06-14T13:30:06Z","symbol":"NIM0467732","token_address":"0x53bc8d670081dc2a55fc3638800baa373779a613","type":"artist","uuid":"55dbd650-26bc-4df5-9868-08a28151c1aa"}
album: Lo Que Nace y No Se Ve
  type: MusicAlbum
  date published: 2017-11-12
album: La Mariposa y el Sol
  type: MusicAlbum
  date published: 2019-11-12
album: Night Song
  type: MusicAlbum
  date published: 2020-12-04
album: Sin City
  type: MusicAlbum
  date published: 2023-01-20
album: Sunrise Fire
  type: MusicAlbum
  date published: 2024-11-22
album: La Mariposa y el Sol
  type: MusicAlbum
  date published: 2025-02-03
  track: La Mariposa y el Sol
    type: MusicRecording
    duration: PT5M7S
    duration ms: 307375
    explicit: false
    by artist: Franc Castillejos
    in album: La Mariposa y el Sol
      type: MusicAlbum
      date published: 2025-02-03
    isrc code: FR10S2503949
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T21:29:31+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xb44ad43c7af3bbd04c6dd54e7ab1046967dff018364924083c1a9b1d494f8914
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956856
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956856
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR10S2503949
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-06T01:25:57Z
    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 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 0xb44ad43c7af3bbd04c6dd54e7ab1046967dff018364924083c1a9b1d494f8914. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR10S2503949.
      date published: 2026-07-06T01:25:57Z
    audio: La Mariposa y el Sol
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 104.974
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.604
      additional property: Energy
        type: PropertyValue
        value: 0.413
      additional property: Speechiness
        type: PropertyValue
        value: 0.026
      additional property: Acousticness
        type: PropertyValue
        value: 0.685
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.083
      additional property: Liveness
        type: PropertyValue
        value: 0.101
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.364
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.94
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Nos Extraño
  type: MusicAlbum
  date published: 2025-03-23