Letra Blanca
type: MusicGroup
popularity: 8
followers: 21
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe8010af01bb788fde1841274243fdb63aaba893a5a470553ff2b19b5de43a8df
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953842
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953842
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/005c9b75-5b43-4ab9-94d8-df256628c808.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/005c9b75-5b43-4ab9-94d8-df256628c808.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/005c9b75-5b43-4ab9-94d8-df256628c808
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T22:22:30Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe8010af01bb788fde1841274243fdb63aaba893a5a470553ff2b19b5de43a8df","name":"Letra Blanca","registered_at":"2026-06-15T13:36:21Z","symbol":"NIM0724885","token_address":"0xfafee4798ca1e0d5eedfc3186eba479fe4f090f7","type":"artist","uuid":"005c9b75-5b43-4ab9-94d8-df256628c808"}
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 0xe8010af01bb788fde1841274243fdb63aaba893a5a470553ff2b19b5de43a8df. Chain 2 (Bitcoin): anchored in block 953877 (2026-06-16T02:39:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/005c9b75-5b43-4ab9-94d8-df256628c808.json and https://artists.proofprofile.net/proofs/artist/005c9b75-5b43-4ab9-94d8-df256628c808.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T02:39:16Z
  text: {"copyright_id":"0xe8010af01bb788fde1841274243fdb63aaba893a5a470553ff2b19b5de43a8df","name":"Letra Blanca","registered_at":"2026-06-15T13:36:21Z","symbol":"NIM0724885","token_address":"0xfafee4798ca1e0d5eedfc3186eba479fe4f090f7","type":"artist","uuid":"005c9b75-5b43-4ab9-94d8-df256628c808"}
album: Yo Me Queria Pegar
  type: MusicAlbum
  date published: 2024-01-21
  track: Yo Me Queria Pegar
    type: MusicRecording
    duration: PT3M2S
    duration ms: 182400
    explicit: true
    by artist: Letra Blanca
    in album: Yo Me Queria Pegar
      type: MusicAlbum
      date published: 2024-01-21
    isrc code: QZ5FN2470522
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T05:17:45+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xd83eb5fb5a770825811b5d25ced0cc2df514db6e88e7c80034b6cddb65606042
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956474
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956474
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ5FN2470522
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-03T08:56:35Z
    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 0xd83eb5fb5a770825811b5d25ced0cc2df514db6e88e7c80034b6cddb65606042. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZ5FN2470522.
      date published: 2026-07-03T08:56:35Z
    audio: Yo Me Queria Pegar
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 100.171
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.68
      additional property: Energy
        type: PropertyValue
        value: 0.664
      additional property: Speechiness
        type: PropertyValue
        value: 0.56
      additional property: Acousticness
        type: PropertyValue
        value: 0.48
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.086
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.688
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.783
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Mi Cita De 200 Peso
  type: MusicAlbum
  date published: 2024-12-09
  track: Mi Cita De 200 Peso
    type: MusicRecording
    duration: PT3M8S
    duration ms: 188383
    explicit: true
    by artist: Letra Blanca
    in album: Mi Cita De 200 Peso
      type: MusicAlbum
      date published: 2024-12-09
    isrc code: SGW502202311
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T17:27:29+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xa997ad18e65011e74121706ce3fc6c38a02783a49b5c473bffc74c16724bb614
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956738
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956738
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SGW502202311
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T04:47:21Z
    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 0xa997ad18e65011e74121706ce3fc6c38a02783a49b5c473bffc74c16724bb614. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/SGW502202311.
      date published: 2026-07-05T04:47:21Z
    audio: Mi Cita De 200 Peso
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 110.133
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.782
      additional property: Energy
        type: PropertyValue
        value: 0.419
      additional property: Speechiness
        type: PropertyValue
        value: 0.302
      additional property: Acousticness
        type: PropertyValue
        value: 0.35
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.082
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.78
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name

Loudness (dB)
type: PropertyValue
value: -12.796

Key Name
type: PropertyValue
value: E

Mode Name
type: PropertyValue
value: Minor