Lea de Leandro
type: MusicGroup
popularity: 13
followers: 45
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcc2c7907507a80c664a22cffced58cd52c86a564c0f872ef9ba6648fa92a4e08
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953736
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953736
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/976b26ca-a41d-43b1-9ea8-3cd0300e0b11.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/976b26ca-a41d-43b1-9ea8-3cd0300e0b11.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/976b26ca-a41d-43b1-9ea8-3cd0300e0b11
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T03:21:19Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xcc2c7907507a80c664a22cffced58cd52c86a564c0f872ef9ba6648fa92a4e08","name":"Lea de Leandro","registered_at":"2026-06-14T20:29:18Z","symbol":"NIM0567696","token_address":"0xd57bf956fa873cdc5ea3c4f3d6902878c482f566","type":"artist","uuid":"976b26ca-a41d-43b1-9ea8-3cd0300e0b11"}
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 0xcc2c7907507a80c664a22cffced58cd52c86a564c0f872ef9ba6648fa92a4e08. Chain 2 (Bitcoin): anchored in block 953736 (2026-06-15T03:21:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/976b26ca-a41d-43b1-9ea8-3cd0300e0b11.json and https://artists.proofprofile.net/proofs/artist/976b26ca-a41d-43b1-9ea8-3cd0300e0b11.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T03:21:19Z
  text: {"copyright_id":"0xcc2c7907507a80c664a22cffced58cd52c86a564c0f872ef9ba6648fa92a4e08","name":"Lea de Leandro","registered_at":"2026-06-14T20:29:18Z","symbol":"NIM0567696","token_address":"0xd57bf956fa873cdc5ea3c4f3d6902878c482f566","type":"artist","uuid":"976b26ca-a41d-43b1-9ea8-3cd0300e0b11"}
album: Diferente
  type: MusicAlbum
  date published: 2024-05-02
album: Disculpas
  type: MusicAlbum
  date published: 2024-05-23
track: BuBu

BuBu
type: MusicRecording
duration: PT2M44S
duration ms: 164686
explicit: false
by artist: Soto Asa
by artist: Lea de Leandro
in album: Disco 9
  type: MusicAlbum
  date published: 2024-05-09
isrc code: BK4DA2411135
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-07T14:11:41+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbbb091c826b6b775ee9323baadb85d58ffb40f511f0777b0d3b347c23e48ad7f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953515
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953515
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BK4DA2411135
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-13T12:53:06Z
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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 953515
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-06-13T12:53:06+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb091c826b6b775ee9323baadb85d58ffb40f511f0777b0d3b347c23e48ad7f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BK4DA2411135.
  date published: 2026-06-13T12:53:06Z
audio: BuBu
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 130.821
  additional property: Musical Key
    type: PropertyValue
    value: 1
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.713
  additional property: Energy
    type: PropertyValue
    value: 0.493
  additional property: Speechiness
    type: PropertyValue
    value: 0.227
  additional property: Acousticness
    type: PropertyValue
    value: 0.515
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.023
  additional property: Liveness
    type: PropertyValue
    value: 0.15
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.384
  additional property: Loudness (dB)
    type: PropertyValue
    value: -14.231
  additional property: Key Name
    type: PropertyValue
    value: C#
  additional property: Mode Name
    type: PropertyValue
    value: Minor