Megaphone Heart
type: MusicGroup
popularity: 30
followers: 12
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x23c82b1e033d5ffaf57896f16cc6d7fc56d999963b3b57134fa9c423038bbf33
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953408
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953408
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7cb9d688-b692-4213-b223-55da4c7cc37c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7cb9d688-b692-4213-b223-55da4c7cc37c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7cb9d688-b692-4213-b223-55da4c7cc37c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:28:13Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x23c82b1e033d5ffaf57896f16cc6d7fc56d999963b3b57134fa9c423038bbf33","name":"Megaphone Heart","registered_at":"2026-06-12T02:42:48Z","symbol":"NIM0162568","token_address":"0x20357a382ef27df166827ccf9b75be05ed5b05b5","type":"artist","uuid":"7cb9d688-b692-4213-b223-55da4c7cc37c"}
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 0x23c82b1e033d5ffaf57896f16cc6d7fc56d999963b3b57134fa9c423038bbf33. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7cb9d688-b692-4213-b223-55da4c7cc37c.json and https://artists.proofprofile.net/proofs/artist/7cb9d688-b692-4213-b223-55da4c7cc37c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:28:13Z
  text: {"copyright_id":"0x23c82b1e033d5ffaf57896f16cc6d7fc56d999963b3b57134fa9c423038bbf33","name":"Megaphone Heart","registered_at":"2026-06-12T02:42:48Z","symbol":"NIM0162568","token_address":"0x20357a382ef27df166827ccf9b75be05ed5b05b5","type":"artist","uuid":"7cb9d688-b692-4213-b223-55da4c7cc37c"}
album: Show Me the Way
  type: MusicAlbum
  date published: 2024-06-30
  track: Become What You Are
    type: MusicRecording
    duration: PT0M59S
    duration ms: 59913
    explicit: false
    by artist: Megaphone Heart
    in album: Show Me the Way
      type: MusicAlbum
      date published: 2024-06-30
    isrc code: USHM82443160
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T17:14:27+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x72d541dc4f6815ddfc1b6426ee878f1c7652247fb75a093ca40c846eb47cb32a
    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/USHM82443160
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T20:17:26Z
    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 0x72d541dc4f6815ddfc1b6426ee878f1c7652247fb75a093ca40c846eb47cb32a. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:17:26Z), 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/USHM82443160.
      date published: 2026-07-19T20:17:26Z
    audio: Become What You Are
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 174.563
      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: 0.463
      additional property: Energy
        type: PropertyValue
        value: 0.8
      additional property: Speechiness
        type: PropertyValue
        value: 0.386
      additional property: Acousticness
        type: PropertyValue
        value: 0.192
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.422
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.702
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.992
      additional property: Key Name
        type: PropertyValue
        value: Bb
      additional property: Mode Name
        type: PropertyValue
        value: Minor