Papertwin
type: MusicGroup
genre: synthpop
genre: synthwave
popularity: 28
followers: 3272
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0d09814b8ecc0e6e334f6e3ed5bbd17f118eb10c96c2ec5011df5ebcf3441238
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d2984b5a-7e93-47a9-b72e-3a0cb6af1adc.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d2984b5a-7e93-47a9-b72e-3a0cb6af1adc.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d2984b5a-7e93-47a9-b72e-3a0cb6af1adc
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
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 0x0d09814b8ecc0e6e334f6e3ed5bbd17f118eb10c96c2ec5011df5ebcf3441238. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d2984b5a-7e93-47a9-b72e-3a0cb6af1adc.json and https://artists.proofprofile.net/proofs/artist/d2984b5a-7e93-47a9-b72e-3a0cb6af1adc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T21:20:00Z
album: Peru
  type: MusicAlbum
  date published: 2013-04-16
album: Vox Humana
  type: MusicAlbum
  date published: 2014-06-17
  track: Sonar
    type: MusicRecording
    duration: PT3M23S
    duration ms: 203586
    explicit: false
    by artist: Papertwin
    in album: Vox Humana
      type: MusicAlbum
      date published: 2014-06-17
    genre: synthpop
    genre: synthwave
    isrc code: TCABX1495180
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T08:21:45+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xbf724df9e5a1d356b1a5cec50b9b1a7f7ef8ce8631f784440021d66f610ffcf2
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958271
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958271
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABX1495180
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T11:24:17Z
    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 0xbf724df9e5a1d356b1a5cec50b9b1a7f7ef8ce8631f784440021d66f610ffcf2. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:24:17Z), 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/TCABX1495180.
      date published: 2026-07-16T11:24:17Z
    audio: Sonar
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 108.018
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.664
      additional property: Energy
        type: PropertyValue
        value: 0.696
      additional property: Speechiness
        type: PropertyValue
        value: 0.039
      additional property: Acousticness
        type: PropertyValue
        value: 0
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.013
      additional property: Liveness
        type: PropertyValue
        value: 0.2
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.721
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.307
      additional property: Key Name
        type: PropertyValue
        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Minor
  track: Headlights
    type: MusicRecording
    duration: PT4M2S
    duration ms: 242693
    explicit: false
    by artist: Papertwin
    in album: Vox Humana
      type: MusicAlbum
      date published: 2014-06-17
    genre: synthpop
    genre: synthwave
    isrc code: TCABX1495183
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T17:15:17+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xb29ccd778a8937531d0127587414b358e4b0ece458d0fd77a6014b2a08854658
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956725
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956725
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCABX1495183
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T01:12:41Z
    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 0xb29ccd778a8937531d0127587414b358e4b0ece458d0fd77a6014b2a08854658. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCABX1495183.
      date published: 2026-07-05T01:12:41Z
    audio: Headlights
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 142.04
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.542
      additional property: Energy
        type: PropertyValue
        value: 0.807
      additional property: Speechiness
        type: PropertyValue
        value: 0.042
      additional property: Acousticness
        type: PropertyValue
        value: 0.004
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.515
      additional property: Liveness
        type: PropertyValue
        value: 0.241
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: Mc5
album: Vacation
album: Candy Cigarettes
album: Happy Half Lives
album: Metal Teeth (Faraway)
album: Family Portraits

Valence (Positivity)
type: PropertyValue
value: 0.162

Loudness (dB)
type: PropertyValue
value: -8.368

Key Name
type: PropertyValue
value: Bb

Mode Name
type: PropertyValue
value: Minor

Mc5
type: MusicAlbum
date published: 2016-03-15

Vacation
type: MusicAlbum
date published: 2016-06-24

Candy Cigarettes
type: MusicAlbum
date published: 2019-09-06

Candy Cigarettes
type: MusicAlbum
date published: 2019-09-06

Happy Half Lives
type: MusicAlbum
date published: 2019-10-18

Happy Half Lives
type: MusicAlbum
date published: 2019-10-18

Metal Teeth (Faraway)
type: MusicAlbum
date published: 2019-11-01

Metal Teeth (Faraway)
type: MusicAlbum
date published: 2019-11-01

Family Portraits
type: MusicAlbum
date published: 2019-11-16

Family Portraits
type: MusicAlbum
date published: 2019-11-16