Mad Hearts
type: MusicGroup
popularity: 3
followers: 94
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa70d2f455398bc3686b38f35cd9fa46a6010211c43dfbf267718b148da7b470e
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/789e777e-2500-436f-8bdc-1d404467089a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/789e777e-2500-436f-8bdc-1d404467089a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/789e777e-2500-436f-8bdc-1d404467089a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa70d2f455398bc3686b38f35cd9fa46a6010211c43dfbf267718b148da7b470e","name":"Mad Hearts","registered_at":"2026-06-17T07:42:17Z","symbol":"NIM1327346","token_address":"0xec875e4e1d86a11c8de02c4014a3461a2ea277e1","type":"artist","uuid":"789e777e-2500-436f-8bdc-1d404467089a"}
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 0xa70d2f455398bc3686b38f35cd9fa46a6010211c43dfbf267718b148da7b470e. 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/789e777e-2500-436f-8bdc-1d404467089a.json and https://artists.proofprofile.net/proofs/artist/789e777e-2500-436f-8bdc-1d404467089a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xa70d2f455398bc3686b38f35cd9fa46a6010211c43dfbf267718b148da7b470e","name":"Mad Hearts","registered_at":"2026-06-17T07:42:17Z","symbol":"NIM1327346","token_address":"0xec875e4e1d86a11c8de02c4014a3461a2ea277e1","type":"artist","uuid":"789e777e-2500-436f-8bdc-1d404467089a"}
album: Take Cover
  type: MusicAlbum
  date published: 2013-12-15
album: Push / Pull
  type: MusicAlbum
  date published: 2017-07-21
album: Heatwave
  type: MusicAlbum
  date published: 2019-06-01
album: Mad Hearts Live with Strings
  type: MusicAlbum
  date published: 2019-12-20
album: All I Want for Christmas
  type: MusicAlbum
  date published: 2021-11-26
album: Why Don't We?
  type: MusicAlbum
  date published: 2023-03-03
album: Be There
  type: MusicAlbum
  date published: 2023-03-24
album: Under A Spell
  type: MusicAlbum
  date published: 2023-03-31
album: Open Up Your Eyes
  type: MusicAlbum
  date published: 2023-04-28
album: Let's Go Dreamin'
  type: MusicAlbum
  date published: 2023-05-12
album: Good
  type: MusicAlbum
  date published: 2023-06-09
album: Fast or Slow
  type: MusicAlbum
  date published: 2023-09-08
  track: Fast or Slow
    type: MusicRecording
    duration: PT3M37S
    duration ms: 217570
    explicit: false
    by artist: Mad Hearts
    in album: Fast or Slow
      type: MusicAlbum
      date published: 2023-09-08
    isrc code: USC6N2300022
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T05:57:20+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x296824868c0798a48a0a442a8fee24833bf2bb808297788abdb27b0e3b2f2bb6
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958838
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958838
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USC6N2300022
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T07:01:21Z
    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 0x296824868c0798a48a0a442a8fee24833bf2bb808297788abdb27b0e3b2f2bb6. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/USC6N2300022.
      date published: 2026-07-20T07:01:21Z
    audio: Fast or Slow
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 214.179
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.709
      additional property: Energy
        type: PropertyValue
        value: 0.394
      additional property: Speechiness
        type: PropertyValue
        value: 0.075
      additional property: Acousticness
        type: PropertyValue
        value: 0.318
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.022
      additional property: Liveness
        type: PropertyValue
        value: 0.409
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.789
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.966
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: I Still Don't Know
  type: MusicAlbum
  date published: 2023-11-24