Ander La Efe
type: MusicGroup
popularity: 11
followers: 28
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0a527306676d199ff67bfc5b13ecfde5cd79a6497c70400b4f3820ec29ca470f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953588
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953588
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/000adc47-29be-42c7-a7e2-29b1e300eac4.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/000adc47-29be-42c7-a7e2-29b1e300eac4.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/000adc47-29be-42c7-a7e2-29b1e300eac4
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T04:52:46Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0a527306676d199ff67bfc5b13ecfde5cd79a6497c70400b4f3820ec29ca470f","name":"Ander La Efe","registered_at":"2026-06-14T04:23:58Z","symbol":"NIM0337965","token_address":"0xd0ca7d7d25170a797b761692f7436e2f46bc5dd1","type":"artist","uuid":"000adc47-29be-42c7-a7e2-29b1e300eac4"}
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 0x0a527306676d199ff67bfc5b13ecfde5cd79a6497c70400b4f3820ec29ca470f. Chain 2 (Bitcoin): anchored in block 953588 (2026-06-14T04:52:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/000adc47-29be-42c7-a7e2-29b1e300eac4.json and https://artists.proofprofile.net/proofs/artist/000adc47-29be-42c7-a7e2-29b1e300eac4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T04:52:46Z
  text: {"copyright_id":"0x0a527306676d199ff67bfc5b13ecfde5cd79a6497c70400b4f3820ec29ca470f","name":"Ander La Efe","registered_at":"2026-06-14T04:23:58Z","symbol":"NIM0337965","token_address":"0xd0ca7d7d25170a797b761692f7436e2f46bc5dd1","type":"artist","uuid":"000adc47-29be-42c7-a7e2-29b1e300eac4"}
album: Twerking
  type: MusicAlbum
  date published: 2022-11-18
album: Todas las Fichas
  type: MusicAlbum
  date published: 2022-11-18
album: Acid
  type: MusicAlbum
  date published: 2022-12-14
album: Como Antes
  type: MusicAlbum
  date published: 2024-02-22
album: La Corono
  type: MusicAlbum
  date published: 2024-06-30
album: 1DM
  type: MusicAlbum
  date published: 2024-07-26
album: A un Paso
  type: MusicAlbum
  date published: 2024-10-11
album: Lo Que Pasé
  type: MusicAlbum
  date published: 2024-11-12
album: Su Nota
  type: MusicAlbum
  date published: 2025-01-16
  track: Su Nota
    type: MusicRecording
    duration: PT3M4S
    duration ms: 184615
    explicit: false
    by artist: Ander La Efe
    in album: Su Nota
      type: MusicAlbum
      date published: 2025-01-16
    isrc code: USCGH2503459
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-06-29T14:18:48+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xe20e3f50e53501a0c171dc7208053750d3cbb404771e42cf67c9839ba65cbb9a
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956375
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956375
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGH2503459
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-02T16:51:38Z
    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 0xe20e3f50e53501a0c171dc7208053750d3cbb404771e42cf67c9839ba65cbb9a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USCGH2503459.
      date published: 2026-07-02T16:51:38Z
    audio: Su Nota
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 116.925
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.74
      additional property: Energy
        type: PropertyValue
        value: 0.704
      additional property: Speechiness
        type: PropertyValue
        value: 0.165
      additional property: Acousticness
        type: PropertyValue
        value: 0.126
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.11
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.648
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.571
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Zamba
  type: MusicAlbum
  date published: 2025-02-21
  track: Zamba
    type: MusicRecording
    duration: PT2M27S
    duration ms: 147576
    explicit: false
    by artist: Ander La Efe
    in album: Zamba
      type: MusicAlbum
      date published: 2025-02-21
    isrc code: USCGJ2542375
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-13T16:25:53+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x5a490521f87592f7dd9a2bdd4d209dd3be089cb2433437012c06600f15a6d43a
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957880
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957880
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGJ2542375
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-13T16:39:18Z
    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 0x5a490521f87592f7dd9a2bdd4d209dd3be089cb2433437012c06600f15a6d43a. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/USCGJ2542375.
      date published: 2026-07-13T16:39:18Z
    audio: Zamba
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 129.661
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
      additional property: Danceability
      additional property: Energy
      additional property: Speechiness
      additional property: Acousticness
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name

Time Signature
type: PropertyValue
value: 4

Danceability
type: PropertyValue
value: 0.732

Energy
type: PropertyValue
value: 0.882

Speechiness
type: PropertyValue
value: 0.067

Acousticness
type: PropertyValue
value: 0.206

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.081

Valence (Positivity)
type: PropertyValue
value: 0.876

Loudness (dB)
type: PropertyValue
value: -2.792

Key Name
type: PropertyValue
value: G

Mode Name
type: PropertyValue
value: Major