Mal Waldron
type: MusicGroup
genre: free jazz
genre: hard bop
genre: jazz
genre: jazz blues
description: Malcolm Earl "Mal" Waldron (August 16, 1925 – December 2, 2002) was an American jazz pianist, composer, and arranger. He started playing professionally in New York in 1950, after graduating from colle
popularity: 33
followers: 23530
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSProofURL
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  value: https://artists.proofprofile.net/proofs/artist/a35cf335-6d54-4fff-b3ee-ae9a727d6ef3.ots
additional property: OTSRecordURL
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additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a35cf335-6d54-4fff-b3ee-ae9a727d6ef3
additional property: OTSTimestamp
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  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
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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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a77b9d734525956826c443226ade80a048885fe7c65970fc5cb35a2b08b571f. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a35cf335-6d54-4fff-b3ee-ae9a727d6ef3.json and https://artists.proofprofile.net/proofs/artist/a35cf335-6d54-4fff-b3ee-ae9a727d6ef3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
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album: Transfiguration
  type: MusicAlbum
  date published: 1956-12-11
album: Mal-1
  type: MusicAlbum
  date published: 1957-01-01
album: Presenting Mal Waldron
  type: MusicAlbum
  date published: 1957-03-24
  track: Left Alone
    type: MusicRecording
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    explicit: false
    by artist: Mal Waldron
    in album: Presenting Mal Waldron
      type: MusicAlbum
      date published: 1957-03-24
    genre: free jazz
    genre: hard bop
    genre: jazz
    genre: jazz blues
    isrc code: DEUE22382069
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    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEUE22382069
    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 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 0x85da22b045ac9cab3b32a97c8df2c754ed53ca3659fb11aa125d38895e6e9028. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/DEUE22382069.
      date published: 2026-07-20T12:15:48Z
    audio: Left Alone
      type: AudioObject
      additional property: Tempo (BPM)
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      additional property: Danceability
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      additional property: Valence (Positivity)
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album: Mal / 2 (Reissue / Remastered 1991)
  type: MusicAlbum
  date published: 1957-11-01
album: Mal/3 Sounds
  type: MusicAlbum
  date published: 1958
album: Mal/3: Sounds
  type: MusicAlbum
  date published: 1958-01-01
album: Mal/4: Trio (Remastered 1994)
  type: MusicAlbum
  date published: 1958-10-01
album: J.M.'s Dream Doll
  type: MusicAlbum
  date published: 1960-01-01
album: Warm Canto
  type: MusicAlbum
  date published: 1960-01-01
album: Ollie's Caravan
  type: MusicAlbum
  date published: 1960-01-01
album: With a Song in My Heart
  type: MusicAlbum
  date published: 1960-01-01
album: Minor Pulsation
  type: MusicAlbum
  date published: 1960-01-01
album: Catwalk
  type: MusicAlbum
  date published: 1961-01-01
album: By Myself
  type: MusicAlbum
  date published: 1961-01-01
album: The Quest (Remastered 2024)
  type: MusicAlbum
  date published: 1962
album: The Quest
  type: MusicAlbum
  date published: 1962-01-01
  track: Status Seeking
    type: MusicRecording
    duration: PT8M55S
    duration ms: 535026
    explicit: false
    by artist: Mal Waldron
    in album: The Quest
      type: MusicAlbum
      date published: 1962-01-01
    genre: free jazz
    genre: hard bop
    genre: jazz
    genre: jazz blues
    isrc code: USFI86200569
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    additional property: CopyrightChainExplorerURL
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    additional property: OTSVerificationAPI
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    additional property: OTSVerifyInstructions
    subject of: OpenTimestamps Proof of Existence
    audio: Status Seeking
  track: Duquility
  track: Thirteen
  track: We Diddit
  track: Warp And Woof
album: All Alone
album: Sweet Love, Bitter
album: The Whirling Dervish
album: The Opening
album: Mal Waldron Plays the Blues (Live at the Domicile)
album: The Call
album: レミニッセント・スイート
album: Up Popped the Devil
album: Music Minus One Trombone Or Bass Violin
album: Moods
album: Breaking New Ground
album: Songs of Love and Regret
album: Sempre Amore
album: Update
album: Much More!
album: Evidence
album: Black Glory (Live)
album: Dedication
album: In Retrospect
album: No More Tears (For Lady Day)
album: No More Tears (for Lady Day)
album: Movie Themes from France
album: Blues For Lady Day
album: Up And Down
album: Waldron - Haslam
album: Magic Night in Borgio Verezzi
album: Remembering The Moment
album: Hard Talk (Live)
album: Two New
album: Left Alone
album: Mal 2
album: Mal 4 - Trio
album: Mal 3 - Sounds
album: Mal 1
album: Impressions
album: Riding A Zephyr
album: Mal Waldron With The Steve Lacy Quintet
album: Mal Waldron On Steinway
album: On Steinway
album: Remembering Mal
album: One Entrance, Many Exits
album: Midnight Melancholy
album: Live at the Bimhuis 1982
album: Live at Dreher Paris 1981

OTSHash
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OTSBitcoinBlock
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OTSBitcoinBlockVerifyURL
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value: https://blockstream.info/api/block-height/958708

OTSVerificationAPI
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OTSTimestamp
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value: 2026-07-19T09:08:25Z

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 0xf35c4b5ec8ea2b98c5a777fe3bc17aa6d6424848493ee4ed2962c905e8e81fb3. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/USFI86200569.
date published: 2026-07-19T09:08:25Z

Status Seeking
type: AudioObject
additional property: Tempo (BPM)
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  value: 151.833
additional property: Musical Key
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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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additional property: Mode Name
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Duquility
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duration: PT4M10S
duration ms: 250466
explicit: false
by artist: Mal Waldron
in album: The Quest
  type: MusicAlbum
  date published: 1962-01-01
genre: free jazz
genre: hard bop
genre: jazz
genre: jazz blues
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additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
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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 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 0xf69694971b93486732d185c4a5594b30f4b4e82dd25ca1396f90423885bd3ef2. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/USFI86200570.
  date published: 2026-07-18T22:59:44Z
audio: Duquility
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
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  additional property: Danceability
    type: PropertyValue
    value: 0.16
  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
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  additional property: Instrumentalness
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Thirteen
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duration: PT4M45S
duration ms: 285733
explicit: false
by artist: Mal Waldron
in album: The Quest
  type: MusicAlbum
  date published: 1962-01-01
genre: free jazz
genre: hard bop
genre: jazz
genre: jazz blues
isrc code: USFI86200571
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
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additional property: OTSBitcoinBlockVerifyURL
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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 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 0x2f498c17425cecbb930a813a22a296848cbd8c1520da8b5fa9b22175d861368b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USFI86200571.
  date published: 2026-07-06T01:25:57Z
audio: Thirteen
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We Diddit
type: MusicRecording
duration: PT4M26S
duration ms: 266800
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by artist: Mal Waldron
in album: The Quest
  type: MusicAlbum
  date published: 1962-01-01
genre: free jazz
genre: hard bop
genre: jazz
genre: jazz blues
isrc code: USFI86200572
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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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 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 0x560c6ad54d4c3989f7575d6ac2f44ec5ea5291ef866c3ae687a4283700858905. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USFI86200572.
  date published: 2026-07-05T18:48:28Z
audio: We Diddit
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Warp And Woof
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duration: PT5M40S
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  date published: 1962-01-01
genre: free jazz
genre: hard bop
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genre: jazz blues
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additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x0b340856b5d41b427b0f087432cd58068c047742bc145087e0adbcaa6cac719a
additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 958951
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/958951
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USFI86200574
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-21T02:01:41Z
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 0x0b340856b5d41b427b0f087432cd58068c047742bc145087e0adbcaa6cac719a. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/USFI86200574.
  date published: 2026-07-21T02:01:41Z
audio: Warp And Woof
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
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  additional property: Danceability
    type: PropertyValue
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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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All Alone
type: MusicAlbum
date published: 1966-01-01
track: Due Torri
  type: MusicRecording
  duration: PT5M14S
  duration ms: 314925
  explicit: false
  by artist: Mal Waldron
  in album: All Alone
    type: MusicAlbum
    date published: 1966-01-01
  genre: free jazz
  genre: hard bop
  genre: jazz
  genre: jazz blues
  isrc code: DEVU51721411
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
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    value: 2026-07-21T21:38:41+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x896d527869ea62c1f8c3fd1d89d92ab67adf55980cf45a898c448f05765ceb6e
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 959063
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/959063
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEVU51721411
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-21T21:45:32Z
  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 0x896d527869ea62c1f8c3fd1d89d92ab67adf55980cf45a898c448f05765ceb6e. Chain 2 (Bitcoin): anchored in block 959063 (2026-07-21T21:45:32Z), 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/DEVU51721411.
    date published: 2026-07-21T21:45:32Z
  audio: Due Torri
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
      type: PropertyValue
      value: 5
    additional property: Mode (Major/Minor)
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      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
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    additional property: Energy
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    additional property: Speechiness
      type: PropertyValue
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    additional property: Acousticness
      type: PropertyValue
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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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track: A View of S. Luca
  type: MusicRecording
  duration: PT5M17S
  duration ms: 317506
  explicit: false
  by artist: Mal Waldron
  in album: All Alone
    type: MusicAlbum
    date published: 1966-01-01
  genre: free jazz
  genre: hard bop
  genre: jazz
  genre: jazz blues
  isrc code: DEVU51721412
  additional property: CopyrightID
  additional property: CopyrightStatus
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  additional property: CopyrightRegisteredAt
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  additional property: CopyrightChainExplorerURL
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  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956545
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEVU51721412
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-03T19:59:51Z
  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 0x062d90640e5a977e30fcfbc3fd38f73257c809039742e11800204cb71614f8e2. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DEVU51721412.
    date published: 2026-07-03T19:59:51Z
  audio: A View of S. Luca
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
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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: Valence (Positivity)
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    additional property: Loudness (dB)
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track: Three For Cicci
  type: MusicRecording
  duration: PT3M44S
  duration ms: 224063
  explicit: false
  by artist: Mal Waldron
  in album: All Alone
    type: MusicAlbum
    date published: 1966-01-01
  genre: free jazz
  genre: hard bop
  genre: jazz
  genre: jazz blues
  isrc code: DEVU51721415
  additional property: CopyrightID
  additional property: CopyrightStatus
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  additional property: CopyrightRegisteredAt
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  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: Three For Cicci

CopyrightChainExplorerURL
type: PropertyValue
value: https://explorer.copyrightchains.com/tx/0xe9919fc61eb984204d46a8eee62a3591c75501e28220f6e339886d816c5be000

OTSHash
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OTSBitcoinBlock
type: PropertyValue
value: 958846

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/958846

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEVU51721415

OTSTimestamp
type: PropertyValue
value: 2026-07-20T08:14:15Z

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 0xe9919fc61eb984204d46a8eee62a3591c75501e28220f6e339886d816c5be000. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/DEVU51721415.
date published: 2026-07-20T08:14:15Z

Three For Cicci
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 176.664
additional property: Musical Key
  type: PropertyValue
  value: 2
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 0
additional property: Time Signature
  type: PropertyValue
  value: 3
additional property: Danceability
  type: PropertyValue
  value: 0.522
additional property: Energy
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additional property: Speechiness
  type: PropertyValue
  value: 0.053
additional property: Acousticness
  type: PropertyValue
  value: 0.982
additional property: Instrumentalness
  type: PropertyValue
  value: 0.906
additional property: Liveness
  type: PropertyValue
  value: 0.155
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.393
additional property: Loudness (dB)
  type: PropertyValue
  value: -6.368
additional property: Key Name
  type: PropertyValue
  value: D
additional property: Mode Name
  type: PropertyValue
  value: Minor

Sweet Love, Bitter
type: MusicAlbum
date published: 1967-01-01

The Whirling Dervish
type: MusicAlbum
date published: 1969-01-01

The Opening
type: MusicAlbum
date published: 1970-11-19

Mal Waldron Plays the Blues (Live at the Domicile)
type: MusicAlbum
date published: 1972

The Call
type: MusicAlbum
date published: 1972-02-01

The Call
type: MusicAlbum
date published: 1972-02-01

レミニッセント・スイート
type: MusicAlbum
date published: 1973

Up Popped the Devil
type: MusicAlbum
date published: 1974

Music Minus One Trombone Or Bass Violin
type: MusicAlbum
date published: 1976-01-01

Moods
type: MusicAlbum
date published: 1978

Breaking New Ground
type: MusicAlbum
date published: 1985

Songs of Love and Regret
type: MusicAlbum
date published: 1986

Sempre Amore
type: MusicAlbum
date published: 1987-12-31

Update
type: MusicAlbum
date published: 1987-12-31

Update
type: MusicAlbum
date published: 1987-12-31

Much More!
type: MusicAlbum
date published: 1988

Evidence
type: MusicAlbum
date published: 1988

Black Glory (Live)
type: MusicAlbum
date published: 1988

Dedication
type: MusicAlbum
date published: 1988-12-31

Dedication
type: MusicAlbum
date published: 1988-12-31

In Retrospect
type: MusicAlbum
date published: 1990

No More Tears (For Lady Day)
type: MusicAlbum
date published: 1990

No More Tears (for Lady Day)
type: MusicAlbum
date published: 1990

Movie Themes from France
type: MusicAlbum
date published: 1990

Blues For Lady Day
type: MusicAlbum
date published: 1990-04-30

Mal-1
type: MusicAlbum
date published: 1991-01-01

Up And Down
type: MusicAlbum
date published: 1992-12-28

Waldron - Haslam
type: MusicAlbum
date published: 1994

Magic Night in Borgio Verezzi
type: MusicAlbum
date published: 1994-09-13

Remembering The Moment
type: MusicAlbum
date published: 1994-12-28

Hard Talk (Live)
type: MusicAlbum
date published: 1995
track: Russian Melody
  type: MusicRecording
  duration: PT6M3S
  duration ms: 363360
  explicit: false
  by artist: Mal Waldron
  in album: Hard Talk (Live)
    type: MusicAlbum
    date published: 1995
  genre: free jazz
  genre: hard bop
  genre: jazz
  genre: jazz blues
  isrc code: DEAM89500016
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-13T15:15:03+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xc2115f75e22c18cdedf58a8bd5746b254eb641976fdc13eb24e00e003d019a09
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957872
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957872
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAM89500016
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-13T15:39:45Z
  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 0xc2115f75e22c18cdedf58a8bd5746b254eb641976fdc13eb24e00e003d019a09. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/DEAM89500016.
    date published: 2026-07-13T15:39:45Z
  audio: Russian Melody
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
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    additional property: Mode (Major/Minor)
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      value: 1
    additional property: Time Signature
      type: PropertyValue
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    additional property: Danceability
      type: PropertyValue
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    additional property: Energy
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    additional property: Speechiness
      type: PropertyValue
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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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    additional property: Mode Name
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Two New
type: MusicAlbum
date published: 1995

Two New
type: MusicAlbum
date published: 1995-04-02

Left Alone
type: MusicAlbum
date published: 2000-01-01

The Quest
type: MusicAlbum
date published: 2000-01-01

Mal 2
type: MusicAlbum
date published: 2000-01-01

Mal 4 - Trio
type: MusicAlbum
date published: 2000-01-01

Mal 3 - Sounds
type: MusicAlbum
date published: 2000-01-01

Mal 1
type: MusicAlbum
date published: 2000-01-01

Impressions
type: MusicAlbum
date published: 2000-01-01

Riding A Zephyr
type: MusicAlbum
date published: 2002-12-31

Mal Waldron With The Steve Lacy Quintet
type: MusicAlbum
date published: 2004-01-01

Mal Waldron On Steinway
type: MusicAlbum
date published: 2006-08-08

On Steinway
type: MusicAlbum
date published: 2006-08-18

Remembering Mal
type: MusicAlbum
date published: 2006-12-31

One Entrance, Many Exits
type: MusicAlbum
date published: 2007-06-15

Midnight Melancholy
type: MusicAlbum
date published: 2007-07-07

Live at the Bimhuis 1982
type: MusicAlbum
date published: 2007-07-26

Live at Dreher Paris 1981
type: MusicAlbum
date published: 2008-01-01

Mal Waldron Collection, Vol. 3
type: MusicAlbum
date published: 2008-05-05

The Essential Jazz Collection: Mal-1
type: MusicAlbum
date published: 2008-05-05

The Essential Jazz Collection: Left Alone
type: MusicAlbum
date published: 2008-05-05

Mal Waldron Collection, Vol. 2
type: MusicAlbum
date published: 2008-05-05

Mal Waldron Collection, Vol. 1
type: MusicAlbum
date published: 2008-05-05

Mal Waldron Collection, Vol. 5
type: MusicAlbum
date published: 2008-05-05

Mal Waldron Collection, Vol. 4
type: MusicAlbum
date published: 2008-05-05

The Quest
type: MusicAlbum
date published: 2008-05-05

Mal Waldron Collection, Vol. 7
type: MusicAlbum
date published: 2008-05-05

Cat Walk
type: MusicAlbum
date published: 2010-03-01
track: Cat Walk
  type: MusicRecording
  duration: PT6M56S
  duration ms: 416640
  explicit: false
  by artist: Mal Waldron
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    date published: 2010-03-01
  genre: free jazz
  genre: hard bop
  genre: jazz
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  additional property: OTSBitcoinBlock
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  additional property: OTSBitcoinBlockVerifyURL
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  additional property: OTSVerificationAPI
    type: PropertyValue
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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 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 0x2301a0545d033ecdda76319e299719943224a5551260429f8cfd190baf7a10f0. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FR6V81036570.
    date published: 2026-07-05T10:01:46Z
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    additional property: Mode (Major/Minor)
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Tokyo Bound
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Time Warp Vol. IV
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Time Warp Vol. III
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Time Warp (Vol. I)
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Time Warp Vol. II
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Signals
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Number Nineteen
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The Quest (feat. Booker Ervin, Eric Dolphy) [Original Album Remastered]
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The Search
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Mal/4
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Mal 1 / Mal 2
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Quiet Temple
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Get Happy
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Mal/4: Trio
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The Quest
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Impressions
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Mal/2
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Mal/3: Sounds
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Mal/2
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You Don't Know What Love Is
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Essential Jazz Masters (1956-1961)
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Mal Waldron: Mal / 3 Sounds / The Quest
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Best Jazz Players (feat. Ron Carter, Eric Dolphy) [Remastered]
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Mal Waldron
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Get Happy
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The Jazz Collection
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Left Alone
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Highlights of Mal Waldron
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Left Alone, Vol. 3
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Left Alone, Vol. 1
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Dee's Dilemma
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Ciao!
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Tension
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The Way You Look Tonight
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Fire Waltz
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Mal/4, Impressions/Left Alone
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Misterioso (Live in Zürich)
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ONE-UPMANSHIP
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Twelve Classic Albums: 1956-1961
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Essential Hits of Mal Waldron
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Airegin
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Golden Hits By Mal Waldron
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Mal Waldron. The Complete Trio Recordings 1958-1960. Mal/4 – Trio / Impressions / Left Alone
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Mal '81 & News: Run About Mal
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Tension
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Thirteen
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The Vinyl Masters: The Prestige Jazz Quartet
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Jazz Connects the World "51 selections"
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MAL WALDRON - THE GREATEST HITS VOL.2 (맬 왈드론 히트곡 모음집)
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MAL WALDRON - THE GREATEST HITS VOL.1 (맬 왈드론 히트곡 모음집)
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All Alone: Deluxe Edition (Remastered)
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Airegin
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Airegin
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Christmas Stars: Mal Waldron
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The 12 Days of Christmas with Mal Waldron
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Plays The Blues Live At The DOMICILE (Remaster)
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In Love with Mal Waldron
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Members Club: Mal Waldron
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Left Alone
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UP POPPED THE DEVIL (Remaster)
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Little Jazz Birds
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A TOUCH OF THE BLUES
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Jazz Ahead with Mal Waldron
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Get Happy
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Music Around the World by Mal Waldron
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マル・ウォルドロン
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Yesterdays
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Left Alone
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Music & Wine with Mal Waldron
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WHAT IT IS
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What It Is
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With Friends Playing Piano
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With Friends Playing Piano
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Glamour Jazz Nights with Mal Waldron
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Magic Moments with Mal Waldron
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We Love Mal Waldron
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Modal-Air
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Golden Selection (Remastered)
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Smoking Jazz
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Jazzomatic
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At The Bimhuis 1982 (Live)
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Soul Eyes [Live (Remastered)]
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Soul Eyes [Live (Remastered)]
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Soul Eyes (Live)
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Searching in Grenoble : The 1978 Solo Piano Concert (Live)
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Giants Of Jazz
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Summer of Love with Mal Waldron
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Mal/2
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Music around the World by Mal Waldron
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Smoking Jazz
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JazzOmatic
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Four Classic Albums (Mal 2 / Left Alone / Mal 1 / Mal 4)
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Candy Girl
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Aggression
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Like Someone In Love
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audio: Booker's Waltz - Live
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I'll Close My Eyes (From "Two Guitars") [Bonus Track]
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  date published: 2026-07-30T03:35:13Z
audio: I'll Close My Eyes (From "Two Guitars") [Bonus Track]
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Number Eight (Potsa Lotsa)
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by artist: Booker Little
by artist: Mal Waldron
by artist: Richard Davis
by artist: Ed Blackwell
in album: At the Five Spot, Vol. 2 [Rudy Van Gelder Remaster]
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  date published: 2009-01-01
popularity: 4
genre: jazz
genre: free-jazz
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  date published: 2026-07-30T08:30:10Z
audio: Number Eight (Potsa Lotsa)
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