Mastamind
type: MusicGroup
genre: alternative hip hop
genre: hardcore hip hop
genre: horrorcore
genre: soca
description: Gary Reed (born December 28, 1972), also known as Mastamind, is an American rapper from Detroit best known as a representative of the hip hop subgenre horrorcore. A founding member of Natas, he was fo
popularity: 13
followers: 7504
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0xd8bf3a7b98989fa94c9f50804774c004301f2edeb76948e4d68026cfe39109b7
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953724
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8b7bcbba-ee2f-4ff8-beb1-a6d366cb715f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8b7bcbba-ee2f-4ff8-beb1-a6d366cb715f.json
additional property: OTSVerificationAPI
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additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T01:43:13Z
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
subject of: OpenTimestamps Proof of Existence
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  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8bf3a7b98989fa94c9f50804774c004301f2edeb76948e4d68026cfe39109b7. Chain 2 (Bitcoin): anchored in block 953724 (2026-06-15T01:43:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8b7bcbba-ee2f-4ff8-beb1-a6d366cb715f.json and https://artists.proofprofile.net/proofs/artist/8b7bcbba-ee2f-4ff8-beb1-a6d366cb715f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T01:43:13Z
album: Themindzi
  type: MusicAlbum
  date published: 2000-01-01
album: Themindzi
  type: MusicAlbum
  date published: 2000-10-24
album: Streetvalu
  type: MusicAlbum
  date published: 2003-11-18
album: Toxsic Avenger
  type: MusicAlbum
  date published: 2009-04-21
album: Khemicalspill
  type: MusicAlbum
  date published: 2010-01-19
album: KhemicalSpill
  type: MusicAlbum
  date published: 2010-03-15
album: Lasttemptationofchrist
  type: MusicAlbum
  date published: 2010-12-07
album: The Mastapiece
  type: MusicAlbum
  date published: 2012-08-07
album: Ntoxsication
  type: MusicAlbum
  date published: 2012-08-17
album: Lickkuiddrano
  type: MusicAlbum
  date published: 2013-05-31
album: The Ultimate Price EP
  type: MusicAlbum
  date published: 2013-12-06
album: The Ultimate Price
  type: MusicAlbum
  date published: 2015-06-30
album: Uranium
  type: MusicAlbum
  date published: 2016-12-27
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  type: MusicAlbum
  date published: 2017-04-09
album: Sleep Tight Sweet Dreamz
  type: MusicAlbum
  date published: 2019-11-02
album: Parang Jam Riddim
  type: MusicAlbum
  date published: 2020-10-28
album: Hell'z Kitchin (Bonus Crack EP)
  type: MusicAlbum
  date published: 2020-10-31
album: The Ultimate Warrior
  type: MusicAlbum
  date published: 2021-06-18
album: Laughing Buddha
  type: MusicAlbum
  date published: 2021-08-08
album: 2 but 8
  type: MusicAlbum
  date published: 2023-07-07
album: Fuck, Drink, and Smoke
  type: MusicAlbum
  date published: 2023-08-07
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  type: MusicAlbum
  date published: 2023-10-07
album: Asteroid (Purple Cannabis Remix)
  type: MusicAlbum
  date published: 2024-01-24
album: PLANTATION MEET
  type: MusicAlbum
  date published: 2024-02-17
album: Dreadlock
  type: MusicAlbum
  date published: 2024-02-27
album: 7uP, WRESTLEMANIA
  type: MusicAlbum
  date published: 2024-03-20
album: SKYNNI BOI
  type: MusicAlbum
  date published: 2024-04-15
album: XCARET/AuDI
  type: MusicAlbum
  date published: 2024-05-07
track: The Creep Show (feat. Twisted Insane, Mastamind, Kung Fu Vampire, Scum, Kid Crusher, Project Born, Damien Quinn, Sutter Kain, Skitzo & Bulletproof and The Fool)
track: Detroit 101 (Feat. Mastamind)
track: Brain Surgery (Feat. Mastamind & Shoestring)

The Creep Show (feat. Twisted Insane, Mastamind, Kung Fu Vampire, Scum, Kid Crusher, Project Born, Damien Quinn, Sutter Kain, Skitzo & Bulletproof and The Fool)
type: MusicRecording
duration: PT6M31S
duration ms: 391821
explicit: false
by artist: Bukshot
by artist: Twisted Insane
by artist: Mastamind
by artist: Kung Fu Vampire
by artist: Scum
by artist: Kidcrusher
by artist: Project Born
by artist: Damien Quinn
by artist: Sutter Kain
by artist: Skitzo
by artist: Bulletproof and The Fool
in album: Night of the Hunter
  type: MusicAlbum
  date published: 2015-10-12
isrc code: USHM21557681
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
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  value: 2026-07-06T11:07:26+00:00
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x640679ebaec66a004b6ec8152051443d7d4643873f9eefce0cdb47604be0e1d0
additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 957064
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM21557681
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-07T16:43:08+00:00
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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
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additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-07T16:43:08+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x640679ebaec66a004b6ec8152051443d7d4643873f9eefce0cdb47604be0e1d0. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/USHM21557681.
  date published: 2026-07-07T20:41:57Z
audio: The Creep Show (feat. Twisted Insane, Mastamind, Kung Fu Vampire, Scum, Kid Crusher, Project Born, Damien Quinn, Sutter Kain, Skitzo & Bulletproof and The Fool)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 147.944
  additional property: Musical Key
    type: PropertyValue
    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: 0.748
  additional property: Energy
    type: PropertyValue
    value: 0.87
  additional property: Speechiness
    type: PropertyValue
    value: 0.3
  additional property: Acousticness
    type: PropertyValue
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  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.073
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.476
  additional property: Loudness (dB)
    type: PropertyValue
    value: -10.878
  additional property: Key Name
    type: PropertyValue
    value: C#
  additional property: Mode Name
    type: PropertyValue
    value: Major

Detroit 101 (Feat. Mastamind)
type: MusicRecording
duration: PT2M20S
duration ms: 140426
explicit: false
by artist: Esham
by artist: Mastamind
in album: Tongues
  type: MusicAlbum
  date published: 2001
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000a3b86f8b1fc07d8775bd14754b504344243ade89d80759415b99ff5e065b6. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/USASN0802546.
  date published: 2026-07-30T09:57:33Z
audio: Detroit 101 (Feat. Mastamind)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 179.171
  additional property: Musical Key
    type: PropertyValue
    value: 11
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
    type: PropertyValue
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  additional property: Speechiness
    type: PropertyValue
    value: 0.484
  additional property: Acousticness
    type: PropertyValue
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  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.773
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.762
  additional property: Loudness (dB)
    type: PropertyValue
    value: -11.348
  additional property: Key Name
    type: PropertyValue
    value: B
  additional property: Mode Name
    type: PropertyValue
    value: Minor
isrc code: USASN0802546
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 960240
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-30T09:57:33+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USASN0802546
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960240
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960240
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T09:57:33+00:00
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

Brain Surgery (Feat. Mastamind & Shoestring)
type: MusicRecording
duration: PT3M0S
duration ms: 180466
explicit: false
by artist: Esham
by artist: Mastamind
by artist: Shoestring
in album: Tongues
  type: MusicAlbum
  date published: 2001
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2285052aa4bf92806777d0da9841a0a4116a0cef9f1d4d4ea6558666ce5b404. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/USASN0802552.
  date published: 2026-07-30T15:42:38Z
audio: Brain Surgery (Feat. Mastamind & Shoestring)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 158.861
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.709
  additional property: Energy
    type: PropertyValue
    value: 0.83
  additional property: Speechiness
    type: PropertyValue
    value: 0.197
  additional property: Acousticness
    type: PropertyValue
    value: 0.057
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.253
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.778
  additional property: Loudness (dB)
    type: PropertyValue
    value: -9.022
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major
isrc code: USASN0802552
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 960273
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-30T15:42:38+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USASN0802552
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960273
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960273
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T15:42:38+00:00
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