Martin Hell 221
type: MusicGroup
popularity: 5
followers: 580
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xeca9fedc0b11a765d3c443b27c5d24a585f1d7b074e8c2bc4c10c0fa4e2b2c8c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953915
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953915
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1956e7bd-81be-4205-93d2-7dd28a8ceca9.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1956e7bd-81be-4205-93d2-7dd28a8ceca9.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1956e7bd-81be-4205-93d2-7dd28a8ceca9
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T08:36:32Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xeca9fedc0b11a765d3c443b27c5d24a585f1d7b074e8c2bc4c10c0fa4e2b2c8c","name":"Martin Hell 221","registered_at":"2026-06-15T22:23:01Z","symbol":"NIM0850209","token_address":"0xb5f686633c9268e4f7b519e2e61d6d135eae1296","type":"artist","uuid":"1956e7bd-81be-4205-93d2-7dd28a8ceca9"}
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 0xeca9fedc0b11a765d3c443b27c5d24a585f1d7b074e8c2bc4c10c0fa4e2b2c8c. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1956e7bd-81be-4205-93d2-7dd28a8ceca9.json and https://artists.proofprofile.net/proofs/artist/1956e7bd-81be-4205-93d2-7dd28a8ceca9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T13:28:01Z
  text: {"copyright_id":"0xeca9fedc0b11a765d3c443b27c5d24a585f1d7b074e8c2bc4c10c0fa4e2b2c8c","name":"Martin Hell 221","registered_at":"2026-06-15T22:23:01Z","symbol":"NIM0850209","token_address":"0xb5f686633c9268e4f7b519e2e61d6d135eae1296","type":"artist","uuid":"1956e7bd-81be-4205-93d2-7dd28a8ceca9"}
album: Non Ho Mai
  type: MusicAlbum
  date published: 2021-03-26
album: MH
  type: MusicAlbum
  date published: 2021-07-30
album: PSG
  type: MusicAlbum
  date published: 2021-10-29
album: HellBoy
  type: MusicAlbum
  date published: 2022-06-03
album: Blanche
  type: MusicAlbum
  date published: 2022-08-17
album: Fête
  type: MusicAlbum
  date published: 2022-09-06
album: DAWGS
  type: MusicAlbum
  date published: 2023-02-24
album: DIMMI CHE
  type: MusicAlbum
  date published: 2024-07-12
album: EMOZIONI
  type: MusicAlbum
  date published: 2024-08-02
album: PIENO DI PARE
  type: MusicAlbum
  date published: 2025-06-27
  track: PIENO DI PARE
    type: MusicRecording
    duration: PT2M33S
    duration ms: 153600
    explicit: true
    by artist: Martin Hell 221
    in album: PIENO DI PARE
      type: MusicAlbum
      date published: 2025-06-27
    isrc code: QZTB62529340
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T08:02:32+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x30589e59760a3263540d2d6b8508980ad3c81ae11613832b1bbbf9dd7bd05b0b
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956776
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956776
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB62529340
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T10:59:37Z
    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 0x30589e59760a3263540d2d6b8508980ad3c81ae11613832b1bbbf9dd7bd05b0b. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZTB62529340.
      date published: 2026-07-05T10:59:37Z
    audio: PIENO DI PARE
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 100.003
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.693
      additional property: Energy
        type: PropertyValue
        value: 0.723
      additional property: Speechiness
        type: PropertyValue
        value: 0.09
      additional property: Acousticness
        type: PropertyValue
        value: 0.616
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.112
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.205
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.47
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Minor