The Grassmasters
type: MusicGroup
genre: bluegrass
genre: newgrass
popularity: 8
followers: 529
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x67e180f8ad7fe8671146cc3faccf4d2822ed3e3b4af5da14501a27ce08c320e3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954032
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954032
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3bde996c-ebc2-47df-81cd-f4209d8fad41.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3bde996c-ebc2-47df-81cd-f4209d8fad41.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/3bde996c-ebc2-47df-81cd-f4209d8fad41
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T01:59:41Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x67e180f8ad7fe8671146cc3faccf4d2822ed3e3b4af5da14501a27ce08c320e3","name":"The Grassmasters","registered_at":"2026-06-16T10:25:05Z","symbol":"NIM1022645","token_address":"0xa9a607e159dbffd76f4aa0ec1b80e9c17868070f","type":"artist","uuid":"3bde996c-ebc2-47df-81cd-f4209d8fad41"}
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 0x67e180f8ad7fe8671146cc3faccf4d2822ed3e3b4af5da14501a27ce08c320e3. Chain 2 (Bitcoin): anchored in block 954032 (2026-06-17T01:59:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3bde996c-ebc2-47df-81cd-f4209d8fad41.json and https://artists.proofprofile.net/proofs/artist/3bde996c-ebc2-47df-81cd-f4209d8fad41.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-17T01:59:41Z
  text: {"copyright_id":"0x67e180f8ad7fe8671146cc3faccf4d2822ed3e3b4af5da14501a27ce08c320e3","name":"The Grassmasters","registered_at":"2026-06-16T10:25:05Z","symbol":"NIM1022645","token_address":"0xa9a607e159dbffd76f4aa0ec1b80e9c17868070f","type":"artist","uuid":"3bde996c-ebc2-47df-81cd-f4209d8fad41"}
album: Beatles Grass
  type: MusicAlbum
  date published: 2005-09-01
album: Elvis Grass
  type: MusicAlbum
  date published: 2006-10-10
album: Taylor Grass
  type: MusicAlbum
  date published: 2006-10-10
album: Marley Grass
  type: MusicAlbum
  date published: 2006-10-10
  track: Lively Up Yourself
    type: MusicRecording
    duration: PT3M16S
    duration ms: 196693
    explicit: false
    by artist: The Grassmasters
    in album: Marley Grass
      type: MusicAlbum
      date published: 2006-10-10
    genre: bluegrass
    genre: newgrass
    isrc code: USZTV0610265
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-06T02:56:42+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x6213535dbb1e9f4563d956a68bb20927f8f6780aab2e5529d407da1e6f1af081
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956889
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956889
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZTV0610265
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-06T06:56:49Z
    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 0x6213535dbb1e9f4563d956a68bb20927f8f6780aab2e5529d407da1e6f1af081. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZTV0610265 — a six-check JSON result.
      date published: 2026-07-06T06:56:49Z
    audio: Lively Up Yourself
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 128.025
      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: 0.735
      additional property: Energy
        type: PropertyValue
        value: 0.305
      additional property: Speechiness
        type: PropertyValue
        value: 0.033
      additional property: Acousticness
        type: PropertyValue
        value: 0.272
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.188
      additional property: Liveness
        type: PropertyValue
        value: 0.069
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.885
      additional property: Loudness (dB)
        type: PropertyValue
        value: -15.392
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Kids Grass
  type: MusicAlbum
  date published: 2006-10-10
album: Grass Roots
  type: MusicAlbum
  date published: 2006-10-10
album: Fleetwood Grass
  type: MusicAlbum
  date published: 2006-10-10
album: Eagles Grass
  type: MusicAlbum
  date published: 2006-10-10
album: Best 'uv Grass
  type: MusicAlbum
  date published: 2006-10-31
album: Aerograss
  type: MusicAlbum
  date published: 2006-10-31
album: Best 'uv Grass
  type: MusicAlbum
  date published: 2006-10-31
album: GospelGrass
  type: MusicAlbum
  date published: 2006-10-31
album: DeadGrass
  type: MusicAlbum
  date published: 2006-10-31
album: CashGrass
  type: MusicAlbum
  date published: 2006-10-31
album: Stones Grass
  type: MusicAlbum
  date published: 2006-11-03
album: Simon & Grassfunkel
  type: MusicAlbum
  date published: 2006-11-03
album: Kids Grass
  type: MusicAlbum
  date published: 2006-11-27
album: Dead Grass
  type: MusicAlbum
  date published: 2007-01-02
album: ZeppelinGrass
  type: MusicAlbum
  date published: 2010-07-13
album: YoungGrass
  type: MusicAlbum
  date published: 2010-08-10
  track: Only Love Can Break Your Heart
    type: MusicRecording
    duration: PT3M9S
    duration ms: 189386
    explicit: false
    by artist: The Grassmasters
    in album: YoungGrass
      type: MusicAlbum
      date published: 2010-08-10
    genre: bluegrass
    genre: newgrass
    isrc code: USZTV1100016
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
    additional property: CopyrightChainExplorerURL
    additional property: OTSHash
    additional property: OTSBitcoinBlock
    additional property: OTSBitcoinBlockVerifyURL
    additional property: OTSVerificationAPI
    additional property: OTSTimestamp
    additional property: OTSVerifyInstructions
    subject of: OpenTimestamps Proof of Existence
    audio: Only Love Can Break Your Heart
album: DylanGrass
album: ClaptonGrass

CopyrightRegisteredAt
type: PropertyValue
value: 2026-07-21T02:05:35+00:00

CopyrightChainExplorerURL
type: PropertyValue
value: https://explorer.copyrightchains.com/tx/0x6057fdf47a3b06208ce57388658de7664e97a8d06d9bdfd3c5371ddc21fcd94f

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 958955

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/958955

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZTV1100016

OTSTimestamp
type: PropertyValue
value: 2026-07-21T03:03:40Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6057fdf47a3b06208ce57388658de7664e97a8d06d9bdfd3c5371ddc21fcd94f. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USZTV1100016 — a six-check JSON result.
date published: 2026-07-21T03:03:40Z

Only Love Can Break Your Heart
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 115.932
additional property: Musical Key
  type: PropertyValue
  value: 2
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 3
additional property: Danceability
  type: PropertyValue
  value: 0.644
additional property: Energy
  type: PropertyValue
  value: 0.376
additional property: Speechiness
  type: PropertyValue
  value: 0.029
additional property: Acousticness
  type: PropertyValue
  value: 0.17
additional property: Instrumentalness
  type: PropertyValue
  value: 0.908
additional property: Liveness
  type: PropertyValue
  value: 0.379
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.361
additional property: Loudness (dB)
  type: PropertyValue
  value: -12.034
additional property: Key Name
  type: PropertyValue
  value: D
additional property: Mode Name
  type: PropertyValue
  value: Major

DylanGrass
type: MusicAlbum
date published: 2010-09-07

ClaptonGrass
type: MusicAlbum
date published: 2010-10-05