Sidewalk Chalk
type: MusicGroup
genre: jazz rap
description: thumb|Sticks of sidewalk chalk thumb|A child drawing on concrete Sidewalk chalk is typically large and thick sticks of chalk made of calcium sulfate (gypsum), instead of calcium carbonate (rock chal
popularity: 9
followers: 6099
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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 0x87c97b6ed491a819f9225516f5ab951b196aadcead564252e01cb1364b2580d5. Chain 2 (Bitcoin): anchored in block 953899 (2026-06-16T06:37:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/11553265-1920-433f-9407-57a4ced2f55a.json and https://artists.proofprofile.net/proofs/artist/11553265-1920-433f-9407-57a4ced2f55a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T06:37:25Z
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album: Sidewalk Chalk on Audiotree Live
  type: MusicAlbum
  date published: 2011
album: Corner Store
  type: MusicAlbum
  date published: 2012-03-06
  track: Birds of a Feather
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    duration: PT3M17S
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    by artist: Sidewalk Chalk
    in album: Corner Store
      type: MusicAlbum
      date published: 2012-03-06
    genre: jazz rap
    isrc code: QMR7L1200001
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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
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      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81d7faa99b2d5cf5ccd6d57eb968b0fcf472fde31c4192da3890306599b8085. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QMR7L1200001.
      date published: 2026-07-19T07:14:39Z
    audio: Birds of a Feather
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 89.96
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        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
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        value: 1
      additional property: Time Signature
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        value: 4
      additional property: Danceability
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      additional property: Instrumentalness
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      additional property: Liveness
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      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.57
      additional property: Loudness (dB)
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      additional property: Key Name
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album: Leaves
  type: MusicAlbum
  date published: 2014-02-25
  track: Luggage (feat. Sam Trump)
    type: MusicRecording
    duration: PT4M16S
    duration ms: 256024
    explicit: false
    by artist: Sidewalk Chalk
    in album: Leaves
      type: MusicAlbum
      date published: 2014-02-25
    genre: jazz rap
    isrc code: USCGH1443747
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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
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      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c5788a5a87d33b7741dc09115bb46d888c7bee117b8163d688cc3b1e251a7f. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/USCGH1443747.
      date published: 2026-07-18T09:39:18Z
    audio: Luggage (feat. Sam Trump)
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 88.983
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        type: PropertyValue
        value: 8
      additional property: Mode (Major/Minor)
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      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
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      additional property: Energy
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      additional property: Speechiness
        type: PropertyValue
        value: 0.095
      additional property: Acousticness
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      additional property: Valence (Positivity)
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album: Shoulder Season
album: Dig
album: Trapped
album: An Orchid Is Born
album: Luggage (Remix)
album: Water Song (Remix)
album: Water Song (Makaya McCraven Remix)
album: Make Room
album: Sun-Filled Sky

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.095

Valence (Positivity)
type: PropertyValue
value: 0.36

Loudness (dB)
type: PropertyValue
value: -6.815

Key Name
type: PropertyValue
value: Ab

Mode Name
type: PropertyValue
value: Minor

Shoulder Season
type: MusicAlbum
date published: 2015-02-03

Shoulder Season
type: MusicAlbum
date published: 2015-02-03

Shoulder Season
type: MusicAlbum
date published: 2015-02-03

Shoulder Season
type: MusicAlbum
date published: 2015-02-03

Sidewalk Chalk on Audiotree Live
type: MusicAlbum
date published: 2015-09-11

Dig
type: MusicAlbum
date published: 2017-04-28

Dig
type: MusicAlbum
date published: 2017-04-28

Trapped
type: MusicAlbum
date published: 2017-05-22

Trapped
type: MusicAlbum
date published: 2017-05-22

Trapped
type: MusicAlbum
date published: 2017-05-22

An Orchid Is Born
type: MusicAlbum
date published: 2017-06-02

An Orchid Is Born
type: MusicAlbum
date published: 2017-06-02

An Orchid Is Born
type: MusicAlbum
date published: 2017-06-02

Luggage (Remix)
type: MusicAlbum
date published: 2018-05-31

Luggage (Remix)
type: MusicAlbum
date published: 2018-05-31

Water Song (Remix)
type: MusicAlbum
date published: 2018-10-05

Water Song (Makaya McCraven Remix)
type: MusicAlbum
date published: 2018-10-05

Make Room
type: MusicAlbum
date published: 2019-12-06

Sun-Filled Sky
type: MusicAlbum
date published: 2021-07-15