arthur mc ofc
type: MusicGroup
popularity: 13
followers: 500
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9ac8368c1d06d1ed398f0d1735f6dcd5155109c00fc1f1caaeff2fd8d0e7e893
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953807
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953807
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e75b97bd-71f4-4b84-879b-779cc9ec774e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e75b97bd-71f4-4b84-879b-779cc9ec774e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e75b97bd-71f4-4b84-879b-779cc9ec774e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T16:39:18Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x9ac8368c1d06d1ed398f0d1735f6dcd5155109c00fc1f1caaeff2fd8d0e7e893","name":"arthur mc ofc","registered_at":"2026-06-15T04:49:50Z","symbol":"NIM0687214","token_address":"0x2882eb95443b3ea840c121c1215ed93d8b88d33c","type":"artist","uuid":"e75b97bd-71f4-4b84-879b-779cc9ec774e"}
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 0x9ac8368c1d06d1ed398f0d1735f6dcd5155109c00fc1f1caaeff2fd8d0e7e893. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e75b97bd-71f4-4b84-879b-779cc9ec774e.json and https://artists.proofprofile.net/proofs/artist/e75b97bd-71f4-4b84-879b-779cc9ec774e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T16:39:18Z
  text: {"copyright_id":"0x9ac8368c1d06d1ed398f0d1735f6dcd5155109c00fc1f1caaeff2fd8d0e7e893","name":"arthur mc ofc","registered_at":"2026-06-15T04:49:50Z","symbol":"NIM0687214","token_address":"0x2882eb95443b3ea840c121c1215ed93d8b88d33c","type":"artist","uuid":"e75b97bd-71f4-4b84-879b-779cc9ec774e"}
album: Oh Meu Bem
  type: MusicAlbum
  date published: 2022-12-16
  track: Oh Meu Bem
    type: MusicRecording
    duration: PT3M7S
    duration ms: 187779
    explicit: true
    by artist: arthur mc ofc
    in album: Oh Meu Bem
      type: MusicAlbum
      date published: 2022-12-16
    isrc code: BCSQ62200005
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-13T16:27:21+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x3d0d708435449936194feaada582711d38ce2e0ef2a2eb9ed937d3735826e936
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957880
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957880
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BCSQ62200005
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-13T16:39:18Z
    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 0x3d0d708435449936194feaada582711d38ce2e0ef2a2eb9ed937d3735826e936. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/BCSQ62200005.
      date published: 2026-07-13T16:39:18Z
    audio: Oh Meu Bem
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 145.133
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.589
      additional property: Energy
        type: PropertyValue
        value: 0.538
      additional property: Speechiness
        type: PropertyValue
        value: 0.306
      additional property: Acousticness
        type: PropertyValue
        value: 0.569
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.152
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.571
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.261
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Presenciei
  type: MusicAlbum
  date published: 2023-09-08
album: Simpatizando
  type: MusicAlbum
  date published: 2024-10-01
album: Perola Negra
  type: MusicAlbum
  date published: 2024-10-02
  track: Perola Negra
    type: MusicRecording
    duration: PT2M40S
    duration ms: 160000
    explicit: true
    by artist: arthur mc ofc
    in album: Perola Negra
      type: MusicAlbum
      date published: 2024-10-02
    isrc code: QZTPX2499588
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T10:55:24+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x50a5e0f99699d315aacb75a73926fa811e349787164d36a205dd0308980faacd
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958286
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958286
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTPX2499588
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T12:43:37Z
    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 0x50a5e0f99699d315aacb75a73926fa811e349787164d36a205dd0308980faacd. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZTPX2499588.
      date published: 2026-07-16T12:43:37Z
    audio: Perola Negra
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 109.184
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 1
      additional property: Danceability
        type: PropertyValue
        value: 0.714
      additional property: Energy
        type: PropertyValue
        value: 0.257
      additional property: Speechiness
        type: PropertyValue
        value: 0.494
      additional property: Acousticness
        type: PropertyValue
        value: 0.222
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: Sem Te Entristecer
album: Eu Sei Bem

Liveness
type: PropertyValue
value: 0.109

Valence (Positivity)
type: PropertyValue
value: 0.588

Loudness (dB)
type: PropertyValue
value: -11.266

Key Name
type: PropertyValue
value: G

Mode Name
type: PropertyValue
value: Minor

Sem Te Entristecer
type: MusicAlbum
date published: 2024-10-03

Eu Sei Bem
type: MusicAlbum
date published: 2024-10-24