Ac3
type: MusicGroup
description: AC3 or AC-3 may refer to: Science and technology Dolby AC-3, Dolby Digital audio codec AC-3 algorithm (Arc Consistency Algorithm 3), one of a series of algorithms used for the solution of constrain
album: Food For Thought
  type: MusicAlbum
  date published: 2023-10-20
album: Ac3 Tapes
  type: MusicAlbum
  date published: 2024-02-23
  track: Lights Please
    type: MusicRecording
    duration: PT2M19S
    duration ms: 139936
    explicit: true
    by artist: Ac3
    in album: Ac3 Tapes
      type: MusicAlbum
      date published: 2024-02-23
    isrc code: QZDA82481471
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-31T08:17:22+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xffca5943d56dbcec0ee65fe364b0f22b3dc6da12e5aa96dd565d16adc95d266e
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 960370
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/960370
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA82481471
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-31T08:38:45Z
    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 0xffca5943d56dbcec0ee65fe364b0f22b3dc6da12e5aa96dd565d16adc95d266e. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/QZDA82481471.
      date published: 2026-07-31T08:38:45Z
    audio: Lights Please
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 110.768
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
        type: PropertyValue
        value: 0.456
      additional property: Energy
        type: PropertyValue
        value: 0.521
      additional property: Speechiness
        type: PropertyValue
        value: 0.31
      additional property: Acousticness
        type: PropertyValue
        value: 0.639
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.1
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.443
      additional property: Loudness (dB)
        type: PropertyValue
        value: -14.97
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: l0st
  type: MusicAlbum
  date published: 2025-02-15
album: eyes up!
  type: MusicAlbum
  date published: 2025-02-18
album: Travel Fees
  type: MusicAlbum
  date published: 2025-04-04
album: tim3
  type: MusicAlbum
  date published: 2025-06-27
album: demos
  type: MusicAlbum
  date published: 2025-10-31