Francesca Castro
type: MusicGroup
popularity: 17
followers: 1122
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x64730d45a91327a44d1317f4b2976811ba7ba335e10d1a4688dd02428c5b7627
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953778
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953778
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b63222e9-8d17-4fa2-8b4a-e218c5b9f552.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b63222e9-8d17-4fa2-8b4a-e218c5b9f552.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b63222e9-8d17-4fa2-8b4a-e218c5b9f552
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T11:57:35Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x64730d45a91327a44d1317f4b2976811ba7ba335e10d1a4688dd02428c5b7627","name":"Francesca Castro","registered_at":"2026-06-14T23:36:23Z","symbol":"NIM0612331","token_address":"0x5069dcd948c4679a6119e9278f4e0ecc68bc5293","type":"artist","uuid":"b63222e9-8d17-4fa2-8b4a-e218c5b9f552"}
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 0x64730d45a91327a44d1317f4b2976811ba7ba335e10d1a4688dd02428c5b7627. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b63222e9-8d17-4fa2-8b4a-e218c5b9f552.json and https://artists.proofprofile.net/proofs/artist/b63222e9-8d17-4fa2-8b4a-e218c5b9f552.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T11:57:35Z
  text: {"copyright_id":"0x64730d45a91327a44d1317f4b2976811ba7ba335e10d1a4688dd02428c5b7627","name":"Francesca Castro","registered_at":"2026-06-14T23:36:23Z","symbol":"NIM0612331","token_address":"0x5069dcd948c4679a6119e9278f4e0ecc68bc5293","type":"artist","uuid":"b63222e9-8d17-4fa2-8b4a-e218c5b9f552"}
album: Day by Day
  type: MusicAlbum
  date published: 2019-06-18
  track: Day by Day
    type: MusicRecording
    duration: PT4M44S
    duration ms: 284551
    explicit: false
    by artist: Francesca Castro
    in album: Day by Day
      type: MusicAlbum
      date published: 2019-06-18
    isrc code: QZES91981662
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T12:12:47+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xe14dd9e9f743793b00e77c403db44f6073044db32c3e4ab301c72d1c098dbf61
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959009
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959009
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES91981662
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T15:09:21Z
    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 0xe14dd9e9f743793b00e77c403db44f6073044db32c3e4ab301c72d1c098dbf61. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:09:21Z), 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/QZES91981662.
      date published: 2026-07-21T15:09:21Z
    audio: Day by Day
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 204.021
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.473
      additional property: Energy
        type: PropertyValue
        value: 0.397
      additional property: Speechiness
        type: PropertyValue
        value: 0.127
      additional property: Acousticness
        type: PropertyValue
        value: 0.681
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.211
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.784
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.119
      additional property: Key Name
        type: PropertyValue
        value: Bb
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Something Bout You
  type: MusicAlbum
  date published: 2020-05-30
  track: Something Bout You
    type: MusicRecording
    duration: PT3M17S
    duration ms: 197418
    explicit: false
    by artist: Francesca Castro
    in album: Something Bout You
      type: MusicAlbum
      date published: 2020-05-30
    isrc code: QZES92078740
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T21:55:35+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xd07961395643cda0dd5768b117ddc4710555cd11e6b0e494271ad7d6cc23fcbc
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958935
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958935
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES92078740
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T22:08:19Z
    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 0xd07961395643cda0dd5768b117ddc4710555cd11e6b0e494271ad7d6cc23fcbc. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZES92078740.
      date published: 2026-07-20T22:08:19Z
    audio: Something Bout You
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 99.998
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.685
      additional property: Energy
        type: PropertyValue
        value: 0.397
      additional property: Speechiness
        type: PropertyValue
        value: 0.038
      additional property: Acousticness
        type: PropertyValue
        value: 0.355
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.056
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.582
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: Santa's Gotta Stay Home (Remastered)
album: Santa's Gotta Stay Home
album: Would You Be So Kind
album: TWO

Loudness (dB)
type: PropertyValue
value: -9.175

Key Name
type: PropertyValue
value: F#

Mode Name
type: PropertyValue
value: Minor

Santa's Gotta Stay Home (Remastered)
type: MusicAlbum
date published: 2020-12-01

Santa's Gotta Stay Home
type: MusicAlbum
date published: 2020-12-01

Would You Be So Kind
type: MusicAlbum
date published: 2021-07-09

TWO
type: MusicAlbum
date published: 2024-01-19