Sadfields
type: MusicGroup
genre: cold wave
genre: dream pop
genre: mexican indie
genre: shoegaze
popularity: 10
followers: 3901
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9b9953f55124221e604835f7632f1785beedd02c0deabdf874d502b9015ce126
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6e68d595-3a54-447d-9670-a0d5c8851def.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6e68d595-3a54-447d-9670-a0d5c8851def.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/6e68d595-3a54-447d-9670-a0d5c8851def
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
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 0x9b9953f55124221e604835f7632f1785beedd02c0deabdf874d502b9015ce126. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6e68d595-3a54-447d-9670-a0d5c8851def.json and https://artists.proofprofile.net/proofs/artist/6e68d595-3a54-447d-9670-a0d5c8851def.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
album: Falling Apart
  type: MusicAlbum
  date published: 2017-01-20
album: I Don't Know Why
  type: MusicAlbum
  date published: 2017-09-01
album: Homesick
  type: MusicAlbum
  date published: 2017-10-20
album: Atrás / Desaparecer
  type: MusicAlbum
  date published: 2019-04-26
album: Sofocar
  type: MusicAlbum
  date published: 2020-03-13
  track: Sofocar
    type: MusicRecording
    duration: PT4M45S
    duration ms: 285714
    explicit: false
    by artist: Sadfields
    in album: Sofocar
      type: MusicAlbum
      date published: 2020-03-13
    genre: cold wave
    genre: dream pop
    genre: mexican indie
    genre: shoegaze
    isrc code: QZGLM2026516
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T18:53:46+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x996be423de5d7597dcb7e118c347598c5e0fb95a00b9f807df1fde4ee49ad45f
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958771
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958771
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLM2026516
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T21:56:35Z
    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 0x996be423de5d7597dcb7e118c347598c5e0fb95a00b9f807df1fde4ee49ad45f. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:56:35Z), 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/QZGLM2026516.
      date published: 2026-07-19T21:56:35Z
    audio: Sofocar
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 125.99
      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: 0.533
      additional property: Energy
        type: PropertyValue
        value: 0.88
      additional property: Speechiness
        type: PropertyValue
        value: 0.042
      additional property: Acousticness
        type: PropertyValue
        value: 0
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.693
      additional property: Liveness
        type: PropertyValue
        value: 0.07
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.142
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.905
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Irreversible
  type: MusicAlbum
  date published: 2021-12-03
album: Suficiente
  type: MusicAlbum
  date published: 2022-04-29
album: De Prisa
  type: MusicAlbum
  date published: 2022-10-27
album: Adiós
  type: MusicAlbum
  date published: 2023-11-16
album: Superluna
  type: MusicAlbum
  date published: 2023-11-23
  track: Irreversible
    type: MusicRecording
    duration: PT3M36S
    duration ms: 216593
    explicit: false
    by artist: Sadfields
    in album: Superluna
      type: MusicAlbum
      date published: 2023-11-23
    genre: cold wave
    genre: dream pop
    genre: mexican indie
    genre: shoegaze
    isrc code: GX53U2010278
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T16:18:15+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x245d594061b12189a55a34a58eb8fb3380ddfbf8b6afb5487cae96db956d608a
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958761
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958761
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX53U2010278
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T17:49:48Z
    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 0x245d594061b12189a55a34a58eb8fb3380ddfbf8b6afb5487cae96db956d608a. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/GX53U2010278.
      date published: 2026-07-19T17:49:48Z
    audio: Irreversible

Irreversible
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 140.037
additional property: Musical Key
  type: PropertyValue
  value: 7
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 0
additional property: Time Signature
  type: PropertyValue
  value: 4
additional property: Danceability
  type: PropertyValue
  value: 0.497
additional property: Energy
  type: PropertyValue
  value: 0.9
additional property: Speechiness
  type: PropertyValue
  value: 0.037
additional property: Acousticness
  type: PropertyValue
  value: 0
additional property: Instrumentalness
  type: PropertyValue
  value: 0.823
additional property: Liveness
  type: PropertyValue
  value: 0.365
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.692
additional property: Loudness (dB)
  type: PropertyValue
  value: -9.37
additional property: Key Name
  type: PropertyValue
  value: G
additional property: Mode Name
  type: PropertyValue
  value: Minor