Marcosd
type: MusicGroup
popularity: 3
followers: 182
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9b21a211166317ed92ef4c5d099eecea1a9b440cd6089fd6297b7d90550b73f9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8581ea84-2213-4405-a615-a2eb6dc3d420.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8581ea84-2213-4405-a615-a2eb6dc3d420.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8581ea84-2213-4405-a615-a2eb6dc3d420
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
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 0x9b21a211166317ed92ef4c5d099eecea1a9b440cd6089fd6297b7d90550b73f9. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8581ea84-2213-4405-a615-a2eb6dc3d420.json and https://artists.proofprofile.net/proofs/artist/8581ea84-2213-4405-a615-a2eb6dc3d420.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
album: Never Let You Go
  type: MusicAlbum
  date published: 2018-10-27
album: Foss Break
  type: MusicAlbum
  date published: 2019-06-21
album: Never Leave Me
  type: MusicAlbum
  date published: 2019-06-26
album: Forbidden Love
  type: MusicAlbum
  date published: 2019-07-05
album: Indian Sunshine
  type: MusicAlbum
  date published: 2019-09-01
album: Smoke
  type: MusicAlbum
  date published: 2019-09-16
album: Young Wild Free
  type: MusicAlbum
  date published: 2019-12-09
album: Walking My Away
  type: MusicAlbum
  date published: 2019-12-27
album: Rockstars
  type: MusicAlbum
  date published: 2020-02-28
album: Devil Inside Me
  type: MusicAlbum
  date published: 2020-03-02
album: Future
  type: MusicAlbum
  date published: 2020-03-08
album: Angels of Rock
  type: MusicAlbum
  date published: 2020-09-15
album: Johara
  type: MusicAlbum
  date published: 2020-09-28
album: Pirate
  type: MusicAlbum
  date published: 2020-10-06
album: Pirate
  type: MusicAlbum
  date published: 2020-10-06
album: Rockstars
  type: MusicAlbum
  date published: 2020-10-09
album: Rockstars
  type: MusicAlbum
  date published: 2020-10-09
album: I Know Better
  type: MusicAlbum
  date published: 2021-04-09
album: How Could You Love
  type: MusicAlbum
  date published: 2021-05-24
album: I Know Better (Johan Core Remix)
  type: MusicAlbum
  date published: 2021-06-15
album: I Know Better (Club Mix)
  type: MusicAlbum
  date published: 2021-07-05
album: Waves
  type: MusicAlbum
  date published: 2021-09-20
album: Cyberpunk
  type: MusicAlbum
  date published: 2021-10-26
album: Angels Fallen
  type: MusicAlbum
  date published: 2022-07-18
album: Take On Me
  type: MusicAlbum
  date published: 2022-08-15
  track: Take On Me
    type: MusicRecording
    duration: PT2M58S
    duration ms: 178161
    explicit: false
    by artist: Marcosd
    in album: Take On Me
      type: MusicAlbum
      date published: 2022-08-15
    isrc code: QZS632268759
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T01:25:00+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x3d24a70256dfa04c8f7e989c668733a44bd17b279260d4279e3b56b87660459c
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956745
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956745
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZS632268759
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T05:33:35Z
    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 0x3d24a70256dfa04c8f7e989c668733a44bd17b279260d4279e3b56b87660459c. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/QZS632268759.
      date published: 2026-07-05T05:33:35Z
    audio: Take On Me
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 150.063
      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: 0.354
      additional property: Energy
        type: PropertyValue
        value: 0.663
      additional property: Speechiness
        type: PropertyValue
        value: 0.05
      additional property: Acousticness
        type: PropertyValue
        value: 0.006
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.122
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.06
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.634
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Lost Keys in Tokyo
  type: MusicAlbum
  date published: 2023-03-18
album: Broken
  type: MusicAlbum
  date published: 2024-01-01
album: Luzes Da Cidade
album: Twinkle Twinkle Little Star
album: Raiar Do Sol (Club Mix)
album: Summer Nights
album: Oh Ay Ay Ye

Take On Me
type: MusicAlbum
date published: 2024-07-05
track: Take On Me
  type: MusicRecording
  duration: PT2M58S
  duration ms: 178161
  explicit: false
  by artist: Marcosd
  in album: Take On Me
    type: MusicAlbum
    date published: 2024-07-05
  isrc code: QZS632268759
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-05T01:25:00+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x3d24a70256dfa04c8f7e989c668733a44bd17b279260d4279e3b56b87660459c
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956772
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956772
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZS632268759
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-05T10:01:46Z
  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 0x3d24a70256dfa04c8f7e989c668733a44bd17b279260d4279e3b56b87660459c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZS632268759.
    date published: 2026-07-05T10:01:46Z
  audio: Take On Me
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 150.063
    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: 0.354
    additional property: Energy
      type: PropertyValue
      value: 0.663
    additional property: Speechiness
      type: PropertyValue
      value: 0.05
    additional property: Acousticness
      type: PropertyValue
      value: 0.006
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.122
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.06
    additional property: Loudness (dB)
      type: PropertyValue
      value: -9.634
    additional property: Key Name
      type: PropertyValue
      value: A
    additional property: Mode Name
      type: PropertyValue
      value: Major

Luzes Da Cidade
type: MusicAlbum
date published: 2024-09-10

Twinkle Twinkle Little Star
type: MusicAlbum
date published: 2025-04-14

Twinkle Twinkle Little Star
type: MusicAlbum
date published: 2025-04-18

Raiar Do Sol (Club Mix)
type: MusicAlbum
date published: 2025-07-04

Summer Nights
type: MusicAlbum
date published: 2025-08-14

Oh Ay Ay Ye
type: MusicAlbum
date published: 2025-10-17
track: Oh Ay Ay Ye
  type: MusicRecording
  duration: PT3M6S
  duration ms: 186720
  explicit: false
  by artist: Marcosd
  in album: Oh Ay Ay Ye
    type: MusicAlbum
    date published: 2025-10-17
  isrc code: QZNJZ2575041
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-16T13:50:08+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x157a003450992af65f36b45b8818206b0a4eff694bf4286809cb538728906acc
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958303
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958303
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJZ2575041
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-16T22:04:13Z
  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 0x157a003450992af65f36b45b8818206b0a4eff694bf4286809cb538728906acc. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T22:04:13Z), 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/QZNJZ2575041.
    date published: 2026-07-16T22:04:13Z
  audio: Oh Ay Ay Ye
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 131.037
    additional property: Musical Key
      type: PropertyValue
      value: 8
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.564
    additional property: Energy
      type: PropertyValue
      value: 0.883
    additional property: Speechiness
      type: PropertyValue
      value: 0.051
    additional property: Acousticness
      type: PropertyValue
      value: 0.008
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.933
    additional property: Liveness
      type: PropertyValue
      value: 0.114
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.146
    additional property: Loudness (dB)
      type: PropertyValue
      value: -6.237
    additional property: Key Name
      type: PropertyValue
      value: Ab
    additional property: Mode Name
      type: PropertyValue
      value: Major