Guido & Maurizio De Angelis
type: MusicGroup
genre: italo dance
description: Guido and Maurizio De Angelis, also known as Oliver Onions, are a prolific duo of Italian musicians, multi-instrumentalists, composers and singers, as well as television and film producers. They reach
popularity: 19
followers: 3470
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4787dfe23c4575fe1c9680ac91ebebd40747c879a2978e160ee5e2f6ca6f0a4c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953618
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953618
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1dba90ae-2495-41f9-ab5a-2735451600cc.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1dba90ae-2495-41f9-ab5a-2735451600cc.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1dba90ae-2495-41f9-ab5a-2735451600cc
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T09:16:10Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x4787dfe23c4575fe1c9680ac91ebebd40747c879a2978e160ee5e2f6ca6f0a4c","name":"Guido & Maurizio De Angelis","registered_at":"2026-06-14T07:30:51Z","symbol":"NIM0382033","token_address":"0x81838407bf6bf2219bc9387441045a363384e7f5","type":"artist","uuid":"1dba90ae-2495-41f9-ab5a-2735451600cc"}
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 0x4787dfe23c4575fe1c9680ac91ebebd40747c879a2978e160ee5e2f6ca6f0a4c. Chain 2 (Bitcoin): anchored in block 953618 (2026-06-14T09:16:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1dba90ae-2495-41f9-ab5a-2735451600cc.json and https://artists.proofprofile.net/proofs/artist/1dba90ae-2495-41f9-ab5a-2735451600cc.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-14T09:16:10Z
  text: {"copyright_id":"0x4787dfe23c4575fe1c9680ac91ebebd40747c879a2978e160ee5e2f6ca6f0a4c","name":"Guido & Maurizio De Angelis","registered_at":"2026-06-14T07:30:51Z","symbol":"NIM0382033","token_address":"0x81838407bf6bf2219bc9387441045a363384e7f5","type":"artist","uuid":"1dba90ae-2495-41f9-ab5a-2735451600cc"}
album: Trastevere (Original Motion Picture Soundtrack)
  type: MusicAlbum
  date published: 1971
album: Trastevere (Original Motion Picture Soundtrack)
  type: MusicAlbum
  date published: 1971
album: Don't Lose Control - Single
  type: MusicAlbum
  date published: 1972-01-01
album: E poi lo chiamarono il magnifico - Man of the East (Original Motion Picture Soundtrack)
  type: MusicAlbum
  date published: 1972-01-03
  track: Don't Lose Control (Main Theme)
    type: MusicRecording
    duration: PT3M26S
    duration ms: 206706
    explicit: false
    by artist: Guido & Maurizio De Angelis
    in album: E poi lo chiamarono il magnifico - Man of the East (Original Motion Picture Soundtrack)
      type: MusicAlbum
      date published: 1972-01-03
    genre: italo dance
    isrc code: ITC460900877
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-13T16:48:48+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x9ca668ef776de4ed3ddd0a0174b36f82630fb7cdb0d749777f9fe8ff945a4dbe
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957884
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957884
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITC460900877
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-13T16:55:06Z
    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 0x9ca668ef776de4ed3ddd0a0174b36f82630fb7cdb0d749777f9fe8ff945a4dbe. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/ITC460900877 — a six-check JSON result.
      date published: 2026-07-13T16:55:06Z
    audio: Don't Lose Control (Main Theme)
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 123.976
      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: 0.429
      additional property: Energy
        type: PropertyValue
        value: 0.446
      additional property: Speechiness
        type: PropertyValue
        value: 0.044
      additional property: Acousticness
        type: PropertyValue
        value: 0.529
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.077
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.205
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.583
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Canterbury n.2 - Nuove storie d'amore del '300 (Original motion picture soundtrack)
  type: MusicAlbum
  date published: 1973
album: Milano trema: la polizia vuole giustizia (Original Motion Picture Soundtrack)
  type: MusicAlbum
  date published: 1973
album: Milano trema: la polizia vuole giustizia (Original Motion Picture Soundtrack)
  type: MusicAlbum
  date published: 1973
album: Arrivano Joe e Margherito (Original Motion Picture Soundtrack)
  type: MusicAlbum
  date published: 1974
album: Il cittadino si ribella (Original Motion Picture Soundtrack)
  type: MusicAlbum
  date published: 1974
album: Il grande racket (Original motion picture soundtrack)
  type: MusicAlbum
  date published: 1976
album: La tigre è ancora viva: Sandokan alla riscossa! (Original Motion Picture Soundtrack)
  type: MusicAlbum
  date published: 1977
album: Goodbye & Amen (Original Motion Picture Soundtrack)
  type: MusicAlbum
  date published: 1977
  track: Goodbye & Amen, Seq. 1
    type: MusicRecording
    duration: PT1M51S
    duration ms: 111426
    explicit: false
    by artist: Guido & Maurizio De Angelis
    in album: Goodbye & Amen (Original Motion Picture Soundtrack)
      type: MusicAlbum
      date published: 1977
    genre: italo dance
    isrc code: ITD811341801
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T08:51:31+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x50f6ced3ef2055f646778d87f4f176eda8b2e8fb6e3ebfb789fc14441fa970f5
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958853
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958853
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITD811341801
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T09:11:53Z
    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 0x50f6ced3ef2055f646778d87f4f176eda8b2e8fb6e3ebfb789fc14441fa970f5. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/ITD811341801 — a six-check JSON result.
      date published: 2026-07-20T09:11:53Z
    audio: Goodbye & Amen, Seq. 1
album: Mannaja (Original Motion Picture Soundtrack)
album: I corpi presentano tracce di violenza carnale (Original Motion Picture Soundtrack) [Remastered]
album: Orzowei - Il marsigliese (Original Motion Picture Soundtrack) [Remastered]
album: La moglie di mio padre (Original Motion Picture Soundtrack)
album: Tedeum (Original Motion Picture Soundtrack)
album: L'arbitro (Original Motion Picture Soundtrack)
album: A Man from the East - Man of The East
album: The Adventure Film World Of Guido & Maurizio De Angelis
album: Original Television Soundtracks Collection
track: For Friends and Enemies
track: Tema di Candida (From "E poi lo chiamarono il Magnifico - A Man from the East") - Version 2
track: Verde

Goodbye & Amen, Seq. 1
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 100.026
additional property: Musical Key
  type: PropertyValue
  value: 6
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 0
additional property: Time Signature
  type: PropertyValue
  value: 4
additional property: Danceability
  type: PropertyValue
  value: 0.504
additional property: Energy
  type: PropertyValue
  value: 0.53
additional property: Speechiness
  type: PropertyValue
  value: 0.037
additional property: Acousticness
  type: PropertyValue
  value: 0.936
additional property: Instrumentalness
  type: PropertyValue
  value: 0.987
additional property: Liveness
  type: PropertyValue
  value: 0.087
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.75
additional property: Loudness (dB)
  type: PropertyValue
  value: -12.382
additional property: Key Name
  type: PropertyValue
  value: F#
additional property: Mode Name
  type: PropertyValue
  value: Minor

Goodbye & Amen (Original Motion Picture Soundtrack)
type: MusicAlbum
date published: 1977

Mannaja (Original Motion Picture Soundtrack)
type: MusicAlbum
date published: 1977

I corpi presentano tracce di violenza carnale (Original Motion Picture Soundtrack) [Remastered]
type: MusicAlbum
date published: 2008

Orzowei - Il marsigliese (Original Motion Picture Soundtrack) [Remastered]
type: MusicAlbum
date published: 2009

La moglie di mio padre (Original Motion Picture Soundtrack)
type: MusicAlbum
date published: 2011

La moglie di mio padre (Original Motion Picture Soundtrack)
type: MusicAlbum
date published: 2011-01-01

Tedeum (Original Motion Picture Soundtrack)
type: MusicAlbum
date published: 2011-01-01

L'arbitro (Original Motion Picture Soundtrack)
type: MusicAlbum
date published: 2013-01-01

L'arbitro (Original Motion Picture Soundtrack)
type: MusicAlbum
date published: 2014-03-27

A Man from the East - Man of The East
type: MusicAlbum
date published: 2014-11-07

The Adventure Film World Of Guido & Maurizio De Angelis
type: MusicAlbum
date published: 2023-04-11

Original Television Soundtracks Collection
type: MusicAlbum
date published: 2024-03-29

For Friends and Enemies
type: MusicRecording
duration: PT1M42S
duration ms: 102200
explicit: false
by artist: Guido & Maurizio De Angelis
in album: Vintage Italian Soundtracks: Spaghetti Western
  type: MusicAlbum
  date published: 2016-08-01
popularity: 7
isrc code: ITF730701338
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T23:01:51+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcfe03657a6248639d16abdef99e6f1438e5da936eb3448ba2675ee3e32c35c3a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITF730701338
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
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 0xcfe03657a6248639d16abdef99e6f1438e5da936eb3448ba2675ee3e32c35c3a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITF730701338 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: For Friends and Enemies
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 117.032
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.561
  additional property: Energy
    type: PropertyValue
    value: 0.43
  additional property: Speechiness
    type: PropertyValue
    value: 0.027
  additional property: Acousticness
    type: PropertyValue
    value: 0.506
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.156
  additional property: Liveness
    type: PropertyValue
    value: 0.094
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.563
  additional property: Loudness (dB)
    type: PropertyValue
    value: -15.474
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Tema di Candida (From "E poi lo chiamarono il Magnifico - A Man from the East") - Version 2
type: MusicRecording
duration: PT3M32S
duration ms: 212040
explicit: false
by artist: Guido & Maurizio De Angelis
in album: Romantic, Film Music Collection
  type: MusicAlbum
  date published: 2022-01-27
isrc code: GBHGA1527264
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T22:08:37+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb78f07fd37392a3a343175d686135cf3f2674e26fcfb2699f5e766bc9f1a3dd3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960473
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960473
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBHGA1527264
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T22:27:44Z
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 0xb78f07fd37392a3a343175d686135cf3f2674e26fcfb2699f5e766bc9f1a3dd3. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBHGA1527264 — a six-check JSON result.
  date published: 2026-07-31T22:27:44Z
audio: Tema di Candida (From "E poi lo chiamarono il Magnifico - A Man from the East") - Version 2
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 114.566
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.333
  additional property: Energy
    type: PropertyValue
    value: 0.244
  additional property: Speechiness
    type: PropertyValue
    value: 0.03
  additional property: Acousticness
    type: PropertyValue
    value: 0.593
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.032
  additional property: Liveness
    type: PropertyValue
    value: 0.101
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.111
  additional property: Loudness (dB)
    type: PropertyValue
    value: -18.296
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

Verde
type: MusicRecording
duration: PT3M16S
duration ms: 196466
explicit: false
by artist: Ciao Italia !
by artist: The Italians
by artist: Oliver Onions
by artist: Guido & Maurizio De Angelis
in album: Made in Italy: The Best of Italian Music
  type: MusicAlbum
  date published: 2020-04-02
isrc code: BRTRB2020877
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T02:55:20+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xfdc24fd82c3e2fb51f9a37c990c11f4f18a846ebdea49a71081f74314b324e0d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956889
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956889
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BRTRB2020877
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-06T06:56:49Z
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 0xfdc24fd82c3e2fb51f9a37c990c11f4f18a846ebdea49a71081f74314b324e0d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BRTRB2020877 — a six-check JSON result.
  date published: 2026-07-06T06:56:49Z
audio: Verde
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 72.605
  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: 0.544
  additional property: Energy
    type: PropertyValue
    value: 0.343
  additional property: Speechiness
    type: PropertyValue
    value: 0.027
  additional property: Acousticness
    type: PropertyValue
    value: 0.701
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.88
  additional property: Liveness
    type: PropertyValue
    value: 0.093
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.438
  additional property: Loudness (dB)
    type: PropertyValue
    value: -9.587
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major