João Marcos
type: MusicGroup
genre: brazilian evangelical music
genre: gospel
description: João Marcos is the name of: João Marcos (footballer, born 1953), full name João Marcos Coelho da Silva, Brazilian footballer who played as a goalkeeper João Marcos (footballer, born 1981), full name
popularity: 7
followers: 4767
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xabe801c50ef68e7166c30f51a726227a380518798d493c801009ebb776bc2a15
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954346
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9579c4aa-a763-47a8-b7a4-033ce04d6519.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9579c4aa-a763-47a8-b7a4-033ce04d6519.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9579c4aa-a763-47a8-b7a4-033ce04d6519
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:51:26Z
additional property: OTSCanonicalRecord
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  value: {"copyright_id":"0xabe801c50ef68e7166c30f51a726227a380518798d493c801009ebb776bc2a15","name":"João Marcos","registered_at":"2026-06-17T17:47:47Z","symbol":"NIM1471728","token_address":"0x717541e96f90837a865b04531e106b87c4afe5f8","type":"artist","uuid":"9579c4aa-a763-47a8-b7a4-033ce04d6519"}
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 0xabe801c50ef68e7166c30f51a726227a380518798d493c801009ebb776bc2a15. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9579c4aa-a763-47a8-b7a4-033ce04d6519.json and https://artists.proofprofile.net/proofs/artist/9579c4aa-a763-47a8-b7a4-033ce04d6519.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:51:26Z
  text: {"copyright_id":"0xabe801c50ef68e7166c30f51a726227a380518798d493c801009ebb776bc2a15","name":"João Marcos","registered_at":"2026-06-17T17:47:47Z","symbol":"NIM1471728","token_address":"0x717541e96f90837a865b04531e106b87c4afe5f8","type":"artist","uuid":"9579c4aa-a763-47a8-b7a4-033ce04d6519"}
album: Existe Um Lugar (Playback)
  type: MusicAlbum
  date published: 1991-12-29
album: Existe Um Lugar
  type: MusicAlbum
  date published: 1991-12-30
album: Universo de Emoção
  type: MusicAlbum
  date published: 1994-12-30
album: Magnífico
  type: MusicAlbum
  date published: 1999-12-30
album: Minhas Composições
  type: MusicAlbum
  date published: 2001
album: Maldito Sentimento (Acústico)
  type: MusicAlbum
  date published: 2018-07-20
album: Piano Songs
  type: MusicAlbum
  date published: 2020-04-03
album: Off Lovezando
  type: MusicAlbum
  date published: 2020-09-18
album: Alto Flute Theme
  type: MusicAlbum
  date published: 2020-11-23
track: Rocha Firme
  type: MusicRecording
  duration: PT4M24S
  duration ms: 264939
  explicit: false
  by artist: João Marcos
  in album: Louvor de Todos Nós Vol.2
    type: MusicAlbum
    date published: 1996-12-30
  isrc code: BRMKP0300401
  additional property: CopyrightID
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  additional property: OTSHash
  additional property: OTSBitcoinBlock
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    value: 957118
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957118
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRMKP0300401
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:20:19Z
  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 0xdbef9562368918a49d38e1ea020d5dd42504f80a855a8b25eeba3a1747df6650. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BRMKP0300401.
    date published: 2026-07-08T03:20:19Z
  audio: Rocha Firme
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 147.654
    additional property: Musical Key
      type: PropertyValue
      value: 4
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.421
    additional property: Energy
      type: PropertyValue
      value: 0.366
    additional property: Speechiness
      type: PropertyValue
      value: 0.028
    additional property: Acousticness
      type: PropertyValue
      value: 0.523
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.184
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.144
    additional property: Loudness (dB)
      type: PropertyValue
      value: -12.801
    additional property: Key Name
      type: PropertyValue
      value: E
    additional property: Mode Name
      type: PropertyValue
      value: Major