David Margam
type: MusicGroup
genre: smooth jazz
popularity: 13
followers: 327
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x252c71559536c44a66b340851229abe9f3c8c84500584671c9f8b165023c31b8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953808
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953808
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f15e203e-17d1-4310-8e34-f18eef0ecc21.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f15e203e-17d1-4310-8e34-f18eef0ecc21.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f15e203e-17d1-4310-8e34-f18eef0ecc21
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T16:45:15Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x252c71559536c44a66b340851229abe9f3c8c84500584671c9f8b165023c31b8","name":"David Margam","registered_at":"2026-06-15T05:47:54Z","symbol":"NIM0701069","token_address":"0x94bc3e172e2a7c356a6d517d31180e7b8d5fe144","type":"artist","uuid":"f15e203e-17d1-4310-8e34-f18eef0ecc21"}
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
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252c71559536c44a66b340851229abe9f3c8c84500584671c9f8b165023c31b8. Chain 2 (Bitcoin): anchored in block 953808 (2026-06-15T16:45:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f15e203e-17d1-4310-8e34-f18eef0ecc21.json and https://artists.proofprofile.net/proofs/artist/f15e203e-17d1-4310-8e34-f18eef0ecc21.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T16:45:15Z
  text: {"copyright_id":"0x252c71559536c44a66b340851229abe9f3c8c84500584671c9f8b165023c31b8","name":"David Margam","registered_at":"2026-06-15T05:47:54Z","symbol":"NIM0701069","token_address":"0x94bc3e172e2a7c356a6d517d31180e7b8d5fe144","type":"artist","uuid":"f15e203e-17d1-4310-8e34-f18eef0ecc21"}
album: Hooking Up
  type: MusicAlbum
  date published: 2021-10-28
album: The Last Time
  type: MusicAlbum
  date published: 2022-09-01
album: I'll Treat You Right, 2.0
  type: MusicAlbum
  date published: 2022-10-02
album: Road to West Coast
  type: MusicAlbum
  date published: 2022-12-05
album: Three Day Weekend
  type: MusicAlbum
  date published: 2023-01-01
album: Immune
  type: MusicAlbum
  date published: 2023-01-15
album: Sunset Boulevard
  type: MusicAlbum
  date published: 2023-02-15
album: Immune
  type: MusicAlbum
  date published: 2023-04-01
album: First of the Year
  type: MusicAlbum
  date published: 2023-11-27
album: Serenity
  type: MusicAlbum
  date published: 2024-03-01
album: Wake Up
  type: MusicAlbum
  date published: 2024-06-07
album: Whispers
  type: MusicAlbum
  date published: 2025-01-10
  track: Whispers
    type: MusicRecording
    duration: PT4M48S
    duration ms: 288338
    explicit: false
    by artist: David Margam
    in album: Whispers
      type: MusicAlbum
      date published: 2025-01-10
    genre: smooth jazz
    isrc code: USY242473240
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T21:33:09+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x3bb35a145fc59a0ef742b8a48ca1c5b1feb979c63a8d2977c846bd633ea25f25
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956639
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956639
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USY242473240
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T11:19:20Z
    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb35a145fc59a0ef742b8a48ca1c5b1feb979c63a8d2977c846bd633ea25f25. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USY242473240.
      date published: 2026-07-04T11:19:20Z
    audio: Whispers
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 106.987
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.602
      additional property: Energy
        type: PropertyValue
        value: 0.836
      additional property: Speechiness
        type: PropertyValue
        value: 0.03
      additional property: Acousticness
        type: PropertyValue
        value: 0.223
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.215
      additional property: Liveness
        type: PropertyValue
        value: 0.403
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.737
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.913
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Land of Dreams
  type: MusicAlbum
  date published: 2025-03-20
album: One More Chance
  type: MusicAlbum
  date published: 2025-09-05
  track: One More Chance
    type: MusicRecording
    duration: PT3M54S
    duration ms: 234961
    explicit: false
    by artist: David Margam
    in album: One More Chance
      type: MusicAlbum
      date published: 2025-09-05
    genre: smooth jazz
    isrc code: USL4Q2534249
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T01:32:09+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xc5535b09443efdda73347a6780b99bc16fdcb6e94e3927bf188f5d91b2e8ab03
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958480
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958480
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USL4Q2534249
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T02:58:58Z
    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
    subject of: OpenTimestamps Proof of Existence
    audio: One More Chance

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5535b09443efdda73347a6780b99bc16fdcb6e94e3927bf188f5d91b2e8ab03. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/USL4Q2534249.
date published: 2026-07-18T02:58:58Z

One More Chance
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 103.019
additional property: Musical Key
  type: PropertyValue
  value: 1
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 4
additional property: Danceability
  type: PropertyValue
  value: 0.77
additional property: Energy
  type: PropertyValue
  value: 0.559
additional property: Speechiness
  type: PropertyValue
  value: 0.029
additional property: Acousticness
  type: PropertyValue
  value: 0.887
additional property: Instrumentalness
  type: PropertyValue
  value: 0.801
additional property: Liveness
  type: PropertyValue
  value: 0.074
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.852
additional property: Loudness (dB)
  type: PropertyValue
  value: -9.868
additional property: Key Name
  type: PropertyValue
  value: C#
additional property: Mode Name
  type: PropertyValue
  value: Major