Sampaio
type: MusicGroup
description: Sampaio is a municipality in the state of Tocantins in the Northern region of Brazil. The municipality contains 6% of the Extremo Norte do Tocantins Extractive Reserve, created in 1992. See also Li
popularity: 2
followers: 100
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa772eb0900db612379271b976b3711e05a21fce5c3ee550433d20621d58f22fc
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954346
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/9866da7f-2077-48e5-aa94-faa8a9509784.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9866da7f-2077-48e5-aa94-faa8a9509784.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9866da7f-2077-48e5-aa94-faa8a9509784
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:51:26Z
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 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 0xa772eb0900db612379271b976b3711e05a21fce5c3ee550433d20621d58f22fc. 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/9866da7f-2077-48e5-aa94-faa8a9509784.json and https://artists.proofprofile.net/proofs/artist/9866da7f-2077-48e5-aa94-faa8a9509784.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:51:26Z
album: Camisa de Time
  type: MusicAlbum
  date published: 2021-01-10
album: Oakley Óh
  type: MusicAlbum
  date published: 2021-08-06
album: Nos Sempre Vive
  type: MusicAlbum
  date published: 2022-08-08
album: Bobojaco
  type: MusicAlbum
  date published: 2022-09-17
album: Air Max Tn
  type: MusicAlbum
  date published: 2022-12-10
  track: Air Max Tn
    type: MusicRecording
    duration: PT2M50S
    duration ms: 170651
    explicit: true
    by artist: Sampaio
    in album: Air Max Tn
      type: MusicAlbum
      date published: 2022-12-10
    isrc code: QZW9M2285327
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T13:31:45+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x39ce2cb75b3581d07a49f94064fcac2e99d928ceefe1803a1f7a49aa3e64a539
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958428
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958428
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZW9M2285327
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T15:15:14Z
    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 0x39ce2cb75b3581d07a49f94064fcac2e99d928ceefe1803a1f7a49aa3e64a539. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZW9M2285327.
      date published: 2026-07-17T15:15:14Z
    audio: Air Max Tn
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 103.694
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.457
      additional property: Energy
        type: PropertyValue
        value: 0.441
      additional property: Speechiness
        type: PropertyValue
        value: 0.21
      additional property: Acousticness
        type: PropertyValue
        value: 0.209
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.241
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.647
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.767
      additional property: Key Name
        type: PropertyValue
        value: E
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Baby É Necessário
  type: MusicAlbum
  date published: 2023-04-15
album: Não Perco o Time
  type: MusicAlbum
  date published: 2023-06-17
album: Brilhante
  type: MusicAlbum
  date published: 2024-05-31
album: O Que Cê Tem
  type: MusicAlbum
  date published: 2024-07-06
album: Simpatia (Cover)
  type: MusicAlbum
  date published: 2024-08-11
album: Diz pra Mim
  type: MusicAlbum
  date published: 2025-02-23