Michael Leonhart
type: MusicGroup
description: Michael Leonhart (born April 21, 1974) is an American jazz trumpeter and multi-instrumentalist. Solo career In 1992 Leonhart was honored with the first Grammy Award for outstanding high school musici
popularity: 23
followers: 1042
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additional property: CopyrightChainExplorerURL
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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 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
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  date published: 2026-06-12T19:24:56Z
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album: Aardvark Poses
  type: MusicAlbum
  date published: 1995-01-01
album: Glub Glub vol. 11
  type: MusicAlbum
  date published: 1997-01-01
album: Glub Glub vol. 11
  type: MusicAlbum
  date published: 1997-01-01
album: Slow
  type: MusicAlbum
  date published: 2002-10-01
album: Slow
  type: MusicAlbum
  date published: 2002-10-01
album: Slow
  type: MusicAlbum
  date published: 2002-10-01
album: The Suzy Lattimore EP
  type: MusicAlbum
  date published: 2005-01-01
album: The Ballad of Minton Quigley
  type: MusicAlbum
  date published: 2006-01-01
album: Hotel Music
  type: MusicAlbum
  date published: 2008-05-20
album: BLACKOUT
  type: MusicAlbum
  date published: 2020-07-01
album: On The Money
  type: MusicAlbum
  date published: 2020-08-28
album: Defeat
  type: MusicAlbum
  date published: 2020-10-30
album: Solitude
  type: MusicAlbum
  date published: 2020-12-04
album: The Alchemy EP
  type: MusicAlbum
  date published: 2021-01-15
album: The Chase
  type: MusicAlbum
  date published: 2021-09-30
album: Golden
  type: MusicAlbum
  date published: 2022-02-24
album: Dreams
  type: MusicAlbum
  date published: 2022-04-29
album: Bona Fide
  type: MusicAlbum
  date published: 2022-11-18
album: The Chase (Strings Attached)
  type: MusicAlbum
  date published: 2023-07-21
track: Sosi B
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  by artist: Ben Sidran
  by artist: Michael Leonhart
  by artist: John Ellis
  in album: Rainmaker
    type: MusicAlbum
    date published: 2024-04-26
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    value: registered
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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 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
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    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd636a68010e4a09398355cc9e040fe59542476e3734749953bf0952e2d857f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR12Q2401195.
    date published: 2026-07-08T03:22:41Z
  audio: Sosi B
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    additional property: Valence (Positivity)
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track: Tangled Up In Blue
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  by artist: Ben Sidran
  by artist: Rodolphe Burger
  by artist: Michael Leonhart
  in album: Dylan Different (Bonus Track Version)
    type: MusicAlbum
    date published: 2010-04-26
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  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Tangled Up In Blue
track: Gotta Serve Somebody

CopyrightChainExplorerURL
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value: https://explorer.copyrightchains.com/tx/0x4114e22d1e59851191fa030a345134779257f15ffeb32a09cfd5dfcaab0578fe

OTSHash
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OTSBitcoinBlock
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value: 957118

OTSBitcoinBlockVerifyURL
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value: https://blockstream.info/api/block-height/957118

OTSVerificationAPI
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value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR12Q0900365

OTSTimestamp
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value: 2026-07-08T03:20:19Z

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 0x4114e22d1e59851191fa030a345134779257f15ffeb32a09cfd5dfcaab0578fe. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR12Q0900365.
date published: 2026-07-08T03:20:19Z

Tangled Up In Blue
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additional property: Tempo (BPM)
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additional property: Mode (Major/Minor)
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additional property: Time Signature
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additional property: Danceability
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additional property: Energy
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additional property: Speechiness
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additional property: Acousticness
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additional property: Instrumentalness
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additional property: Liveness
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additional property: Valence (Positivity)
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additional property: Loudness (dB)
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additional property: Key Name
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  value: G
additional property: Mode Name
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Gotta Serve Somebody
type: MusicRecording
duration: PT4M48S
duration ms: 288633
explicit: false
by artist: Ben Sidran
by artist: Bob Malach
by artist: Michael Leonhart
in album: Dylan Different (Bonus Track Version)
  type: MusicAlbum
  date published: 2010-04-26
isrc code: FR12Q0900366
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR12Q0900366
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 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 0x645312d59ae07e00a713691ab2f3f6d1069239ff0f3b8abfa38f60924520d5d5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR12Q0900366.
  date published: 2026-07-08T03:53:27Z
audio: Gotta Serve Somebody
  type: AudioObject
  additional property: Tempo (BPM)
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    type: PropertyValue
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    type: PropertyValue
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  additional property: Valence (Positivity)
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    type: PropertyValue
    value: -17.118
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