Marc Roberts
type: MusicGroup
popularity: 11
followers: 594
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x620a2b38fbbe3673be577fbbf1994f1056c7ac7d22dcbe66b04d2a020c6d06be
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953704
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953704
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7a7a902b-31d9-4113-90c6-647fc48dfdbc.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7a7a902b-31d9-4113-90c6-647fc48dfdbc.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7a7a902b-31d9-4113-90c6-647fc48dfdbc
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T22:58:38Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x620a2b38fbbe3673be577fbbf1994f1056c7ac7d22dcbe66b04d2a020c6d06be","name":"Marc Roberts","registered_at":"2026-06-14T17:24:09Z","symbol":"NIM0523588","token_address":"0x71771fd268b5540e84350dab0d84a9c97f392e1f","type":"artist","uuid":"7a7a902b-31d9-4113-90c6-647fc48dfdbc"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620a2b38fbbe3673be577fbbf1994f1056c7ac7d22dcbe66b04d2a020c6d06be. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7a7a902b-31d9-4113-90c6-647fc48dfdbc.json and https://artists.proofprofile.net/proofs/artist/7a7a902b-31d9-4113-90c6-647fc48dfdbc.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-14T22:58:38Z
  text: {"copyright_id":"0x620a2b38fbbe3673be577fbbf1994f1056c7ac7d22dcbe66b04d2a020c6d06be","name":"Marc Roberts","registered_at":"2026-06-14T17:24:09Z","symbol":"NIM0523588","token_address":"0x71771fd268b5540e84350dab0d84a9c97f392e1f","type":"artist","uuid":"7a7a902b-31d9-4113-90c6-647fc48dfdbc"}
album: Once In Your Life
  type: MusicAlbum
  date published: 2007-01-23
album: Meet Me Half Way
  type: MusicAlbum
  date published: 2007-01-23
album: Marc Roberts
  type: MusicAlbum
  date published: 2007-01-23
  track: To Be Loved By You
    type: MusicRecording
    duration: PT5M21S
    duration ms: 321813
    explicit: false
    by artist: Marc Roberts
    in album: Marc Roberts
      type: MusicAlbum
      date published: 2007-01-23
    isrc code: US2G40701621
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T05:55:41+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xd3c2ef9cdc9284da370e236ee8549794f59ab67740f93afff2f750ab8d1ef6bb
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956772
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956772
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US2G40701621
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T10:01:46Z
    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 0xd3c2ef9cdc9284da370e236ee8549794f59ab67740f93afff2f750ab8d1ef6bb. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US2G40701621 — a six-check JSON result.
      date published: 2026-07-05T10:01:46Z
    audio: To Be Loved By You
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 94.093
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.711
      additional property: Energy
        type: PropertyValue
        value: 0.523
      additional property: Speechiness
        type: PropertyValue
        value: 0.023
      additional property: Acousticness
        type: PropertyValue
        value: 0.43
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.073
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.685
      additional property: Loudness (dB)
        type: PropertyValue
        value: -10.683
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: Mysterious Woman
    type: MusicRecording
    duration: PT3M5S
    duration ms: 185320
    explicit: false
    by artist: Marc Roberts
    in album: Marc Roberts
      type: MusicAlbum
      date published: 2007-01-23
    isrc code: US2G40701623
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T09:06:49+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x5a9997369ffb9c13a4fd234f37497db1119ad3022a4f36bc74b4c6f96e7c5868
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956545
    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/US2G40701623
    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 0x5a9997369ffb9c13a4fd234f37497db1119ad3022a4f36bc74b4c6f96e7c5868. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US2G40701623 — a six-check JSON result.
      date published: 2026-07-03T19:59:51Z
    audio: Mysterious Woman
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 144.905
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.574
      additional property: Energy
        type: PropertyValue
        value: 0.453
      additional property: Speechiness
        type: PropertyValue
        value: 0.028
      additional property: Acousticness
        type: PropertyValue
        value: 0.713
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.269
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: Once in Your Life
album: The Promise
album: Now & Then
album: Wild Atlantic Way (feat. Yvonne Fahy & Trad on the Prom)
album: A Tribute to the Music of John Denver
album: Something Inside
album: It's Christmas Time
album: Love Is Here Forevermore
album: Lilac Road
album: Emily & Me

Valence (Positivity)
type: PropertyValue
value: 0.289

Loudness (dB)
type: PropertyValue
value: -9.8

Key Name
type: PropertyValue
value: E

Mode Name
type: PropertyValue
value: Minor

Meet Me Half Way
type: MusicAlbum
date published: 2011

Once in Your Life
type: MusicAlbum
date published: 2011

Marc Roberts
type: MusicAlbum
date published: 2011
track: Mysterious Woman
  type: MusicRecording
  duration: PT3M5S
  duration ms: 185320
  explicit: false
  by artist: Marc Roberts
  in album: Marc Roberts
    type: MusicAlbum
    date published: 2011
  isrc code: US2G40701623
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-03T09:06:49+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x5a9997369ffb9c13a4fd234f37497db1119ad3022a4f36bc74b4c6f96e7c5868
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956482
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956482
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US2G40701623
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-03T10:33:57Z
  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 0x5a9997369ffb9c13a4fd234f37497db1119ad3022a4f36bc74b4c6f96e7c5868. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US2G40701623 — a six-check JSON result.
    date published: 2026-07-03T10:33:57Z
  audio: Mysterious Woman
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 144.905
    additional property: Musical Key
      type: PropertyValue
      value: 4
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.574
    additional property: Energy
      type: PropertyValue
      value: 0.453
    additional property: Speechiness
      type: PropertyValue
      value: 0.028
    additional property: Acousticness
      type: PropertyValue
      value: 0.713
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.269
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.289
    additional property: Loudness (dB)
      type: PropertyValue
      value: -9.8
    additional property: Key Name
      type: PropertyValue
      value: E
    additional property: Mode Name
      type: PropertyValue
      value: Minor

The Promise
type: MusicAlbum
date published: 2011-12-05

Now & Then
type: MusicAlbum
date published: 2013-08-16

Wild Atlantic Way (feat. Yvonne Fahy & Trad on the Prom)
type: MusicAlbum
date published: 2014-07-16

A Tribute to the Music of John Denver
type: MusicAlbum
date published: 2015-01-30

Something Inside
type: MusicAlbum
date published: 2018-06-22

It's Christmas Time
type: MusicAlbum
date published: 2022-12-09

Love Is Here Forevermore
type: MusicAlbum
date published: 2023-06-23

Lilac Road
type: MusicAlbum
date published: 2024-07-05

Emily & Me
type: MusicAlbum
date published: 2025-10-17

Lilac Road
type: MusicAlbum
date published: 2025-11-07