Mauritz Sillem
type: MusicGroup
popularity: 21
followers: 21
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4da6513b7b18c942500c88c4b569db8a67d94fad92598b43ad3da936442f2654
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
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additional property: OTSRecordURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da6513b7b18c942500c88c4b569db8a67d94fad92598b43ad3da936442f2654. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4e56f379-cf13-483c-a653-f5824b7fa032.json and https://artists.proofprofile.net/proofs/artist/4e56f379-cf13-483c-a653-f5824b7fa032.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:28:13Z
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track: Concerto-Sonata in D Major for Trumpet, Strings and Harpsichord: I. Moderato e grazioso
  type: MusicRecording
  duration: PT3M25S
  duration ms: 205266
  explicit: false
  by artist: Georg Philipp Telemann
  by artist: Maurice André
  by artist: English Chamber Orchestra
  by artist: Sir Charles Mackerras
  by artist: Mauritz Sillem
  in album: Viviani / Vivaldi / Telemann / Handel / Joseph & Michael Haydn: Trumpet Concertos
    type: MusicAlbum
    date published: 1977-01-01
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  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057600271
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T08:56:20Z
  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 0x2863227b2ce7a39d1ae1f41d5f09192f3572aa631e4e572b7dcfdd26b0bf41d8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEF057600271.
    date published: 2026-07-08T08:56:20Z
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      type: PropertyValue
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    additional property: Energy
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    additional property: Speechiness
      type: PropertyValue
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    additional property: Instrumentalness
      type: PropertyValue
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    additional property: Liveness
      type: PropertyValue
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    additional property: Valence (Positivity)
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track: Concerto for 2 Trumpets, Strings & Continuo in C Major, RV 537: II. Largo
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  duration: PT0M56S
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  by artist: Antonio Vivaldi
  by artist: Maurice André
  by artist: English Chamber Orchestra
  by artist: Sir Charles Mackerras
  by artist: Mauritz Sillem
  in album: Maurice André Plays Trumpet Concerts
    type: MusicAlbum
    date published: 1986-01-01
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  additional property: CopyrightID
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    type: PropertyValue
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  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057600232
  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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9ddb5030df703f57d9cbc78ed879cdcb00772e0d1db03ce914a06d3a22938c9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057600232.
    date published: 2026-07-08T03:20:19Z
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    additional property: Instrumentalness
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    additional property: Liveness
      type: PropertyValue
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    additional property: Valence (Positivity)
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    additional property: Mode Name
track: Concerto-Sonata in D Major for Trumpet, Strings and Harpsichord: II. Largo
track: Concerto-Sonata in D Major for Trumpet, Strings and Harpsichord: III. Vivace

Valence (Positivity)
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Loudness (dB)
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Key Name
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value: C

Mode Name
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Concerto-Sonata in D Major for Trumpet, Strings and Harpsichord: I. Moderato e grazioso
type: MusicRecording
duration: PT3M23S
duration ms: 203960
explicit: false
by artist: Georg Philipp Telemann
by artist: Maurice André
by artist: English Chamber Orchestra
by artist: Sir Charles Mackerras
by artist: Mauritz Sillem
in album: Maurice André Plays Trumpet Concerts
  type: MusicAlbum
  date published: 1986-01-01
isrc code: DEF057600271
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
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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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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057600271
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:22:41Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2863227b2ce7a39d1ae1f41d5f09192f3572aa631e4e572b7dcfdd26b0bf41d8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057600271.
  date published: 2026-07-08T03:22:41Z
audio: Concerto-Sonata in D Major for Trumpet, Strings and Harpsichord: I. Moderato e grazioso
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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: Valence (Positivity)
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Concerto-Sonata in D Major for Trumpet, Strings and Harpsichord: II. Largo
type: MusicRecording
duration: PT4M9S
duration ms: 249333
explicit: false
by artist: Georg Philipp Telemann
by artist: Maurice André
by artist: English Chamber Orchestra
by artist: Sir Charles Mackerras
by artist: Mauritz Sillem
in album: Maurice André Plays Trumpet Concerts
  type: MusicAlbum
  date published: 1986-01-01
isrc code: DEF057600272
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
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
  type: PropertyValue
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additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T08:56:20Z
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 0x3a177d7c9bdb062116c6df1a259d860b4e0825e9934ef0cb8fd64ab9a41a1f87. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEF057600272.
  date published: 2026-07-08T08:56:20Z
audio: Concerto-Sonata in D Major for Trumpet, Strings and Harpsichord: II. Largo
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  additional property: Tempo (BPM)
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  additional property: Danceability
    type: PropertyValue
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    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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Concerto-Sonata in D Major for Trumpet, Strings and Harpsichord: III. Vivace
type: MusicRecording
duration: PT2M46S
duration ms: 166333
explicit: false
by artist: Georg Philipp Telemann
by artist: Maurice André
by artist: English Chamber Orchestra
by artist: Sir Charles Mackerras
by artist: Mauritz Sillem
in album: Maurice André Plays Trumpet Concerts
  type: MusicAlbum
  date published: 1986-01-01
isrc code: DEF057600273
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
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057600273
additional property: OTSTimestamp
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  value: 2026-07-08T03:22:41Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec13b6d8e94525cec9866518270fa3f0f209d24e0a889825a96a85fe5fbccbf2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF057600273.
  date published: 2026-07-08T03:22:41Z
audio: Concerto-Sonata in D Major for Trumpet, Strings and Harpsichord: III. Vivace
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    type: PropertyValue
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    type: PropertyValue
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    type: PropertyValue
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    type: PropertyValue
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    type: PropertyValue
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