Joel Massami
type: MusicGroup
popularity: 5
followers: 99
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7e67442bbe1b8cbdb18e2ba0ff71a1e605988c51b123ebf4bca7ca31fcd3cfef
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5273d62a-2014-4200-8e67-ccc0fdbddc58.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5273d62a-2014-4200-8e67-ccc0fdbddc58.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5273d62a-2014-4200-8e67-ccc0fdbddc58
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x7e67442bbe1b8cbdb18e2ba0ff71a1e605988c51b123ebf4bca7ca31fcd3cfef","name":"Joel Massami","registered_at":"2026-06-16T18:25:41Z","symbol":"NIM1137298","token_address":"0xc23ac93fc1ed7e62bf92cfafc910f05e1c74b4c8","type":"artist","uuid":"5273d62a-2014-4200-8e67-ccc0fdbddc58"}
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 0x7e67442bbe1b8cbdb18e2ba0ff71a1e605988c51b123ebf4bca7ca31fcd3cfef. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5273d62a-2014-4200-8e67-ccc0fdbddc58.json and https://artists.proofprofile.net/proofs/artist/5273d62a-2014-4200-8e67-ccc0fdbddc58.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0x7e67442bbe1b8cbdb18e2ba0ff71a1e605988c51b123ebf4bca7ca31fcd3cfef","name":"Joel Massami","registered_at":"2026-06-16T18:25:41Z","symbol":"NIM1137298","token_address":"0xc23ac93fc1ed7e62bf92cfafc910f05e1c74b4c8","type":"artist","uuid":"5273d62a-2014-4200-8e67-ccc0fdbddc58"}
album: Tempo Dificeis
  type: MusicAlbum
  date published: 2021-06-20
album: Hinos Acústicos
  type: MusicAlbum
  date published: 2022-08-01
  track: Anjo da Canção
    type: MusicRecording
    duration: PT4M51S
    duration ms: 291534
    explicit: false
    by artist: Joel Massami
    in album: Hinos Acústicos
      type: MusicAlbum
      date published: 2022-08-01
    isrc code: QZTVM2282554
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T17:38:31+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x41f31284c9ba799c17eb04fcc60adc65b716421a26e98be5e9bc78dfa8298d48
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958444
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958444
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTVM2282554
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T19:12:23Z
    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 0x41f31284c9ba799c17eb04fcc60adc65b716421a26e98be5e9bc78dfa8298d48. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZTVM2282554.
      date published: 2026-07-17T19:12:23Z
    audio: Anjo da Canção
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 187.678
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.45
      additional property: Energy
        type: PropertyValue
        value: 0.121
      additional property: Speechiness
        type: PropertyValue
        value: 0.048
      additional property: Acousticness
        type: PropertyValue
        value: 0.979
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.078
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.397
      additional property: Loudness (dB)
        type: PropertyValue
        value: -15.439
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Louvores ao Senhor Jesus
  type: MusicAlbum
  date published: 2023-02-13