Subfreqs
type: MusicGroup
popularity: 5
followers: 103
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6991527c8b15b6942ca56a5c097b865d3a914bddb84dabe4e1c684aaac1bf6f3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954043
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954043
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3f7ffcda-3c4a-4a03-93f5-6f25c6727bf2.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3f7ffcda-3c4a-4a03-93f5-6f25c6727bf2.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/3f7ffcda-3c4a-4a03-93f5-6f25c6727bf2
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T04:15:20Z
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 0x6991527c8b15b6942ca56a5c097b865d3a914bddb84dabe4e1c684aaac1bf6f3. Chain 2 (Bitcoin): anchored in block 954043 (2026-06-17T04:15:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3f7ffcda-3c4a-4a03-93f5-6f25c6727bf2.json and https://artists.proofprofile.net/proofs/artist/3f7ffcda-3c4a-4a03-93f5-6f25c6727bf2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T04:15:20Z
album: Ailouros / Tropos Zois
  type: MusicAlbum
  date published: 2021-10-23
  track: Ανταρσία / Antarsia
    type: MusicRecording
    duration: PT3M58S
    duration ms: 238000
    explicit: true
    by artist: Subfreqs
    in album: Ailouros / Tropos Zois
      type: MusicAlbum
      date published: 2021-10-23
    isrc code: QZNWV2163536
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T03:44:33+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x150872e59b5569e901db1a99a87b16a01b91912b2709b29261f4e283c2721fd3
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958245
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958245
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWV2163536
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T05:50:22Z
    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 0x150872e59b5569e901db1a99a87b16a01b91912b2709b29261f4e283c2721fd3. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QZNWV2163536.
      date published: 2026-07-16T05:50:22Z
    audio: Ανταρσία / Antarsia
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 129.987
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 1
      additional property: Danceability
        type: PropertyValue
        value: 0.889
      additional property: Energy
        type: PropertyValue
        value: 0.666
      additional property: Speechiness
        type: PropertyValue
        value: 0.541
      additional property: Acousticness
        type: PropertyValue
        value: 0.36
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.082
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.708
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.463
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Ailouros - Akraia Sports
  type: MusicAlbum
  date published: 2021-11-08
album: Ailouros - Varipoinitis
  type: MusicAlbum
  date published: 2021-11-18
album: Ailouros - Ena Yaw
  type: MusicAlbum
  date published: 2021-12-17
album: Avrio
  type: MusicAlbum
  date published: 2021-12-30
album: Alumbrados
  type: MusicAlbum
  date published: 2022-02-02
album: Drilltown SKG collection
  type: MusicAlbum
  date published: 2022-03-22
album: DSK - Frikio
  type: MusicAlbum
  date published: 2022-04-21
album: Sevah
  type: MusicAlbum
  date published: 2022-07-04
album: Kit mains libre
  type: MusicAlbum
  date published: 2022-09-12
album: CASUAL AUDIO CROOKS (Side A)
  type: MusicAlbum
  date published: 2024-07-22