hurb
type: MusicGroup
genre: lo-fi
description: Hurb (formerly Hotel Urbano) was a Brazilian online travel agency founded in January 2011 by João Ricardo Mendes, Hurb was valued at R$ 2.6 billion or approximately US$590 million when Booking Holding
popularity: 3
followers: 85
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd6e334d93d22714d899fa0c49862333b7d6e19074177b562acb02fb9ba70585a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954043
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954043
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4018364d-3097-45a4-9171-9b428be1efaf.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4018364d-3097-45a4-9171-9b428be1efaf.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/4018364d-3097-45a4-9171-9b428be1efaf
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T04:15:20Z
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 0xd6e334d93d22714d899fa0c49862333b7d6e19074177b562acb02fb9ba70585a. Chain 2 (Bitcoin): anchored in block 954043 (2026-06-17T04:15:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4018364d-3097-45a4-9171-9b428be1efaf.json and https://artists.proofprofile.net/proofs/artist/4018364d-3097-45a4-9171-9b428be1efaf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T04:15:20Z
album: one.zero
  type: MusicAlbum
  date published: 2021-04-25
album: disco
  type: MusicAlbum
  date published: 2021-05-12
album: hazel
  type: MusicAlbum
  date published: 2021-05-12
album: nostalgia
  type: MusicAlbum
  date published: 2021-05-19
album: theme
  type: MusicAlbum
  date published: 2021-05-20
album: rose
  type: MusicAlbum
  date published: 2021-05-28
album: just passin thru
  type: MusicAlbum
  date published: 2021-05-28
album: navy blue
  type: MusicAlbum
  date published: 2021-06-02
album: daydream
  type: MusicAlbum
  date published: 2021-06-18
album: im okay
  type: MusicAlbum
  date published: 2021-06-25
album: heart
  type: MusicAlbum
  date published: 2021-07-08
album: gold fish
  type: MusicAlbum
  date published: 2021-07-17
album: brother
  type: MusicAlbum
  date published: 2021-10-15
album: eterna forest
  type: MusicAlbum
  date published: 2021-10-20
  track: eterna forest
    type: MusicRecording
    duration: PT3M18S
    duration ms: 198857
    explicit: false
    by artist: hurb
    in album: eterna forest
      type: MusicAlbum
      date published: 2021-10-20
    genre: lo-fi
    isrc code: QZNWQ2181888
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T14:39:52+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x759da5fa20afeedcf93e7e0363e8a5dd7e694e89baabc3f93fffcbd917c5b3de
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958746
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958746
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWQ2181888
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T15:36:35Z
    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 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 0x759da5fa20afeedcf93e7e0363e8a5dd7e694e89baabc3f93fffcbd917c5b3de. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZNWQ2181888.
      date published: 2026-07-19T15:36:35Z
    audio: eterna forest
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 139.989
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.677
      additional property: Energy
        type: PropertyValue
        value: 0.48
      additional property: Speechiness
        type: PropertyValue
        value: 0.034
      additional property: Acousticness
        type: PropertyValue
        value: 0.661
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.69
      additional property: Liveness
        type: PropertyValue
        value: 0.577
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.448
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.548
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: fortune
  type: MusicAlbum
  date published: 2023-08-23
album: ALWAYS FUN (Remix)
  type: MusicAlbum
  date published: 2024-11-10