Carlos Cortez
type: MusicGroup
description: Carlos Cortez (August 13, 1923 – January 19, 2005) was a postwar and contemporary artist who was also a poet, printmaker, graphic artist, photographer, songwriter, editor, muralist, and political acti
popularity: 9
followers: 435
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSVerifyInstructions
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  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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21351f7995f77be6c93224a7c6d24f1f63476038d5072182ce6e70d4e29ff699. Chain 2 (Bitcoin): anchored in block 954689 (2026-06-21T10:35:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e1c571c5-c442-4913-8016-bc31f32f4e0d.json and https://artists.proofprofile.net/proofs/artist/e1c571c5-c442-4913-8016-bc31f32f4e0d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T10:35:31Z
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album: Immer Mit Mein Team
  type: MusicAlbum
  date published: 2018-01-16
album: Cash Cash
  type: MusicAlbum
  date published: 2018-03-07
album: Ich Hol die Million
  type: MusicAlbum
  date published: 2019-11-15
album: Trapper
  type: MusicAlbum
  date published: 2020-07-03
album: Spin in the Middle
  type: MusicAlbum
  date published: 2020-09-04
album: Speedlimit
  type: MusicAlbum
  date published: 2021-05-14
album: Gas Out
  type: MusicAlbum
  date published: 2021-05-28
album: Trapper 2.0
  type: MusicAlbum
  date published: 2021-06-11
album: Überleben
  type: MusicAlbum
  date published: 2021-06-25
album: Kalt
  type: MusicAlbum
  date published: 2024-09-27
  track: Kalt
    type: MusicRecording
    duration: PT2M23S
    duration ms: 143000
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    by artist: Carlos Cortez
    in album: Kalt
      type: MusicAlbum
      date published: 2024-09-27
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    additional property: OTSVerificationAPI
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    additional property: OTSTimestamp
      type: PropertyValue
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    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 0x9df9dbe65bc5b9ca4d8ee5f15d49ff059c406bc999b74f52ac027486019631d3. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZWFE2455928.
      date published: 2026-07-05T10:59:37Z
    audio: Kalt
      type: AudioObject
      additional property: Tempo (BPM)
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        value: 70.7
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      additional property: Mode (Major/Minor)
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        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 5
      additional property: Danceability
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      additional property: Energy
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      additional property: Speechiness
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        value: 0.473
      additional property: Acousticness
        type: PropertyValue
        value: 0.142
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.1
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.914
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.131
      additional property: Key Name
        type: PropertyValue
        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Minor
track: Kush & Caine

Kush & Caine
type: MusicRecording
duration: PT2M22S
duration ms: 142131
explicit: false
by artist: jaynbeats
by artist: Kwam.E
by artist: Carlos Cortez
by artist: Shirama
by artist: yani5000
in album: Collabo-Tape
  type: MusicAlbum
  date published: 2021-03-18
isrc code: DECE72101558
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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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
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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0083b9efb36abf101c420bd1e3b797b845cb3dd4ebb848658029d12451353e2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DECE72101558.
  date published: 2026-07-02T03:30:09Z
audio: Kush & Caine
  type: AudioObject
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    value: 1
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.976
  additional property: Energy
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    value: 0.34
  additional property: Speechiness
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Valence (Positivity)
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    value: 0.265
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