Sierra León
type: MusicGroup
genre: latin alternative
genre: latin indie
genre: mexican indie
genre: mexican rock
popularity: 10
followers: 5061
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc54686925bb8ef0fdca6f630ab11398320805fe02bf30ae0d5a7dc31d7656542
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954533
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954533
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a654886e-9091-4e2d-81c0-97e43493ca42.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a654886e-9091-4e2d-81c0-97e43493ca42.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a654886e-9091-4e2d-81c0-97e43493ca42
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T08:57:02Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc54686925bb8ef0fdca6f630ab11398320805fe02bf30ae0d5a7dc31d7656542","name":"Sierra León","registered_at":"2026-06-20T07:42:42Z","symbol":"NIM1557854","token_address":"0xedc8f5bbf3a8c92aafa05a3a074bbd3b64335da4","type":"artist","uuid":"a654886e-9091-4e2d-81c0-97e43493ca42"}
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 0xc54686925bb8ef0fdca6f630ab11398320805fe02bf30ae0d5a7dc31d7656542. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a654886e-9091-4e2d-81c0-97e43493ca42.json and https://artists.proofprofile.net/proofs/artist/a654886e-9091-4e2d-81c0-97e43493ca42.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T08:57:02Z
  text: {"copyright_id":"0xc54686925bb8ef0fdca6f630ab11398320805fe02bf30ae0d5a7dc31d7656542","name":"Sierra León","registered_at":"2026-06-20T07:42:42Z","symbol":"NIM1557854","token_address":"0xedc8f5bbf3a8c92aafa05a3a074bbd3b64335da4","type":"artist","uuid":"a654886e-9091-4e2d-81c0-97e43493ca42"}
album: Broken Arquetypos
  type: MusicAlbum
  date published: 2013-02-01
album: Broken Arquetypos
  type: MusicAlbum
  date published: 2013-02-15
album: El Otro Lado
  type: MusicAlbum
  date published: 2014-01-01
album: El Otro Lado
  type: MusicAlbum
  date published: 2014-07-22
album: Broken Arquetypos
  type: MusicAlbum
  date published: 2015-05-22
album: No Somos Los Mismos
  type: MusicAlbum
  date published: 2015-08-21
album: No Somos los Mismos
  type: MusicAlbum
  date published: 2016-01-04
  track: Vértigo
    type: MusicRecording
    duration: PT4M3S
    duration ms: 243640
    explicit: false
    by artist: Sierra León
    in album: No Somos los Mismos
      type: MusicAlbum
      date published: 2016-01-04
    genre: latin alternative
    genre: latin indie
    genre: mexican indie
    genre: mexican rock
    isrc code: MX3741500998
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T06:21:45+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x6b4ba7d5dfda14e7189f6b934409f4d3aa67089f9a3d1519714ebb9d5f57bf4e
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956772
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956772
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/MX3741500998
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T10:01:46Z
    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 0x6b4ba7d5dfda14e7189f6b934409f4d3aa67089f9a3d1519714ebb9d5f57bf4e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/MX3741500998.
      date published: 2026-07-05T10:01:46Z
    audio: Vértigo
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 138.632
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.5
      additional property: Energy
        type: PropertyValue
        value: 0.949
      additional property: Speechiness
        type: PropertyValue
        value: 0.081
      additional property: Acousticness
        type: PropertyValue
        value: 0.066
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.117
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.478
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.779
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: No Somos los Mismos
  type: MusicAlbum
  date published: 2016-02-01
album: Medusas
  type: MusicAlbum
  date published: 2017-01-01
album: Lacerado
  type: MusicAlbum
  date published: 2017-05-12
  track: Lacerado
    type: MusicRecording
    duration: PT4M20S
    duration ms: 260603
    explicit: false
    by artist: Sierra León
    in album: Lacerado
      type: MusicAlbum
      date published: 2017-05-12
    genre: latin alternative
    genre: latin indie
    genre: mexican indie
    genre: mexican rock
    isrc code: QM6MZ1704392
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T22:09:39+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x0b82c379f5cc618385d07f1732b920bde7d08070285b929378c29ce2cf59c40d
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958335
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958335
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6MZ1704392
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T22:37:47Z
    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 0x0b82c379f5cc618385d07f1732b920bde7d08070285b929378c29ce2cf59c40d. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QM6MZ1704392.
      date published: 2026-07-16T22:37:47Z
    audio: Lacerado
album: Lucía
album: Hipersomnia, Pt. 1
album: Renacer
album: Como tú
album: Como Tú
album: Todo Pasará
album: Simulaciones (Hipersomnia Pt. II)
album: Los Peces En El Rio
album: El Niño del Tambor (Cover)
album: Temporal
album: Rostro Inmóvil
album: Cuanta Malicia
album: Corto Circuito
album: Nada Más
album: Liberia
album: Cuánta Malicia

Lacerado
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 142.206
additional property: Musical Key
  type: PropertyValue
  value: 2
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 4
additional property: Danceability
  type: PropertyValue
  value: 0.487
additional property: Energy
  type: PropertyValue
  value: 0.956
additional property: Speechiness
  type: PropertyValue
  value: 0.201
additional property: Acousticness
  type: PropertyValue
  value: 0.001
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.102
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.358
additional property: Loudness (dB)
  type: PropertyValue
  value: -4.099
additional property: Key Name
  type: PropertyValue
  value: D
additional property: Mode Name
  type: PropertyValue
  value: Major

Lucía
type: MusicAlbum
date published: 2018-01-26

Hipersomnia, Pt. 1
type: MusicAlbum
date published: 2018-05-04
track: Lucía
  type: MusicRecording
  duration: PT3M53S
  duration ms: 233240
  explicit: false
  by artist: Sierra León
  in album: Hipersomnia, Pt. 1
    type: MusicAlbum
    date published: 2018-05-04
  genre: latin alternative
  genre: latin indie
  genre: mexican indie
  genre: mexican rock
  isrc code: QZ5AB1836024
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-22T10:44:29+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xdb0339d9a5aeb7e8ecb757ff938af031a0d1f1883c8852e30c286ed8484708da
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 959123
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/959123
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ5AB1836024
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-22T11:35:32Z
  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 0xdb0339d9a5aeb7e8ecb757ff938af031a0d1f1883c8852e30c286ed8484708da. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZ5AB1836024.
    date published: 2026-07-22T11:35:32Z
  audio: Lucía
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 147.02
    additional property: Musical Key
      type: PropertyValue
      value: 9
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.519
    additional property: Energy
      type: PropertyValue
      value: 0.856
    additional property: Speechiness
      type: PropertyValue
      value: 0.069
    additional property: Acousticness
      type: PropertyValue
      value: 0
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.09
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.356
    additional property: Loudness (dB)
      type: PropertyValue
      value: -5.266
    additional property: Key Name
      type: PropertyValue
      value: A
    additional property: Mode Name
      type: PropertyValue
      value: Minor

Hipersomnia, Pt. 1
type: MusicAlbum
date published: 2018-06-08

Renacer
type: MusicAlbum
date published: 2019-05-03

Renacer
type: MusicAlbum
date published: 2019-05-17

Como tú
type: MusicAlbum
date published: 2019-09-20

Como Tú
type: MusicAlbum
date published: 2019-10-18

Todo Pasará
type: MusicAlbum
date published: 2020-07-10

Simulaciones (Hipersomnia Pt. II)
type: MusicAlbum
date published: 2020-07-31

Los Peces En El Rio
type: MusicAlbum
date published: 2020-11-06

El Niño del Tambor (Cover)
type: MusicAlbum
date published: 2020-12-11

Temporal
type: MusicAlbum
date published: 2021-02-12

Rostro Inmóvil
type: MusicAlbum
date published: 2021-05-14

Cuanta Malicia
type: MusicAlbum
date published: 2021-07-15

Corto Circuito
type: MusicAlbum
date published: 2021-09-24

Nada Más
type: MusicAlbum
date published: 2021-12-24

Liberia
type: MusicAlbum
date published: 2022-02-10

Cuánta Malicia
type: MusicAlbum
date published: 2022-12-23

Cuánta Malicia
type: MusicAlbum
date published: 2022-12-23