Lefteris Samson
type: MusicGroup
genre: entehno
popularity: 12
followers: 403
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8d42dc5b17ee56b61d6d2077aabc3450ecc2461478e112527699d0a8b02190ae
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953714
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953714
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7f74bdbb-e45f-472e-a904-df95984016eb.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7f74bdbb-e45f-472e-a904-df95984016eb.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7f74bdbb-e45f-472e-a904-df95984016eb
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T00:43:59Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8d42dc5b17ee56b61d6d2077aabc3450ecc2461478e112527699d0a8b02190ae","name":"Lefteris Samson","registered_at":"2026-06-14T17:55:18Z","symbol":"NIM0530974","token_address":"0x4af4728c0332e861152d4fbd8de58851a92514ca","type":"artist","uuid":"7f74bdbb-e45f-472e-a904-df95984016eb"}
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 0x8d42dc5b17ee56b61d6d2077aabc3450ecc2461478e112527699d0a8b02190ae. Chain 2 (Bitcoin): anchored in block 953714 (2026-06-15T00:43:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7f74bdbb-e45f-472e-a904-df95984016eb.json and https://artists.proofprofile.net/proofs/artist/7f74bdbb-e45f-472e-a904-df95984016eb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T00:43:59Z
  text: {"copyright_id":"0x8d42dc5b17ee56b61d6d2077aabc3450ecc2461478e112527699d0a8b02190ae","name":"Lefteris Samson","registered_at":"2026-06-14T17:55:18Z","symbol":"NIM0530974","token_address":"0x4af4728c0332e861152d4fbd8de58851a92514ca","type":"artist","uuid":"7f74bdbb-e45f-472e-a904-df95984016eb"}
album: My Son
  type: MusicAlbum
  date published: 2017-01-30
album: Silent Hills
  type: MusicAlbum
  date published: 2017-05-23
album: You're Coming with Me
  type: MusicAlbum
  date published: 2018-01-12
album: Astro Tou Proinou
  type: MusicAlbum
  date published: 2018-09-21
  track: Astro Tou Proinou
    type: MusicRecording
    duration: PT3M50S
    duration ms: 230785
    explicit: false
    by artist: Lefteris Samson
    in album: Astro Tou Proinou
      type: MusicAlbum
      date published: 2018-09-21
    genre: entehno
    isrc code: GRSAE1800003
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T08:24:47+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xf43c0b068ad4532f11957b6c0a4fbc0bdf141d054012cb6e9cb8df37261e146c
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956634
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956634
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRSAE1800003
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T10:04:33Z
    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 0xf43c0b068ad4532f11957b6c0a4fbc0bdf141d054012cb6e9cb8df37261e146c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GRSAE1800003.
      date published: 2026-07-04T10:04:33Z
    audio: Astro Tou Proinou
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 103.294
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.341
      additional property: Energy
        type: PropertyValue
        value: 0.202
      additional property: Speechiness
        type: PropertyValue
        value: 0.034
      additional property: Acousticness
        type: PropertyValue
        value: 0.574
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.003
      additional property: Liveness
        type: PropertyValue
        value: 0.089
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.14
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.431
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Black Blaze
  type: MusicAlbum
  date published: 2019-01-23
album: To Nero
  type: MusicAlbum
  date published: 2019-09-03
album: Inner Silence
  type: MusicAlbum
  date published: 2020-03-22
album: Coming Through
  type: MusicAlbum
  date published: 2021-05-21
album: Coming Through
  type: MusicAlbum
  date published: 2021-05-21
album: You Gotta Love Her
  type: MusicAlbum
  date published: 2021-06-15
album: The Floppies
  type: MusicAlbum
  date published: 2022-07-18
album: The Floppies
  type: MusicAlbum
  date published: 2022-07-18
album: To Nanourisma Tis Vaninas (Original Motion Pictures Soundtrack)
  type: MusicAlbum
  date published: 2022-07-25
  track: To Nanourisma Tis Vaninas - Original Motion Pictures Soundtrack
    type: MusicRecording
    duration: PT2M54S
    duration ms: 174506
    explicit: false
    by artist: Lefteris Samson
    in album: To Nanourisma Tis Vaninas (Original Motion Pictures Soundtrack)
      type: MusicAlbum
      date published: 2022-07-25
    genre: entehno
    isrc code: GRSAE2200009
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T21:25:51+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x44ef907e7526587bf79d864afe9566a56510f5fb4b817b12761804f01bfef762
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958329
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958329
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRSAE2200009
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T00:29:21Z
    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 0x44ef907e7526587bf79d864afe9566a56510f5fb4b817b12761804f01bfef762. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:29:21Z), 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/GRSAE2200009.
      date published: 2026-07-17T00:29:21Z
    audio: To Nanourisma Tis Vaninas - Original Motion Pictures Soundtrack
album: Summer Of Mine
album: Agkalia
album: H

To Nanourisma Tis Vaninas - Original Motion Pictures Soundtrack
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 172.786
additional property: Musical Key
  type: PropertyValue
  value: 3
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 3
additional property: Danceability
  type: PropertyValue
  value: 0.259
additional property: Energy
  type: PropertyValue
  value: 0.051
additional property: Speechiness
  type: PropertyValue
  value: 0.037
additional property: Acousticness
  type: PropertyValue
  value: 0.966
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.087
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.236
additional property: Loudness (dB)
  type: PropertyValue
  value: -14.14
additional property: Key Name
  type: PropertyValue
  value: Eb
additional property: Mode Name
  type: PropertyValue
  value: Major

Summer Of Mine
type: MusicAlbum
date published: 2023-06-21

Agkalia
type: MusicAlbum
date published: 2024-05-29

H
type: MusicAlbum
date published: 2025-01-31
track: H Kardia
  type: MusicRecording
  duration: PT2M32S
  duration ms: 152213
  explicit: false
  by artist: Lefteris Samson
  in album: H
    type: MusicAlbum
    date published: 2025-01-31
  genre: entehno
  isrc code: GRSAE2500001
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-05T02:27:49+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x227241b7558235023d6a601f0680e41125717aa16393ec3d339b04e6b11f1f3b
  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/GRSAE2500001
  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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227241b7558235023d6a601f0680e41125717aa16393ec3d339b04e6b11f1f3b. 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/GRSAE2500001.
    date published: 2026-07-05T10:01:46Z
  audio: H Kardia
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 110.08
    additional property: Musical Key
      type: PropertyValue
      value: 1
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.572
    additional property: Energy
      type: PropertyValue
      value: 0.288
    additional property: Speechiness
      type: PropertyValue
      value: 0.044
    additional property: Acousticness
      type: PropertyValue
      value: 0.83
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.106
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.104
    additional property: Loudness (dB)
      type: PropertyValue
      value: -12.412
    additional property: Key Name
      type: PropertyValue
      value: C#
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: Ta Synnefa
  type: MusicRecording
  duration: PT3M33S
  duration ms: 213400
  explicit: false
  by artist: Lefteris Samson
  in album: H
    type: MusicAlbum
    date published: 2025-01-31
  genre: entehno
  isrc code: GRSAE2500002
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-05T07:40:37+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x651df75a603c8e90501ceec3904b8ed84689b76258073cb64834256be52d13fa
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956776
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956776
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRSAE2500002
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-05T10:59:37Z
  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 0x651df75a603c8e90501ceec3904b8ed84689b76258073cb64834256be52d13fa. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GRSAE2500002.
    date published: 2026-07-05T10:59:37Z
  audio: Ta Synnefa
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 143.918
    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: 0.461
    additional property: Energy
      type: PropertyValue
      value: 0.305
    additional property: Speechiness
      type: PropertyValue
      value: 0.039
    additional property: Acousticness
      type: PropertyValue
      value: 0.716
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.371
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.097
    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
track: To Trizoni
  type: MusicRecording
  duration: PT4M24S
  duration ms: 264960
  explicit: false
  by artist: Lefteris Samson
  in album: H
    type: MusicAlbum
    date published: 2025-01-31
  genre: entehno
  isrc code: GRSAE2500005
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-19T04:04:10+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xc4fd398f133e7f93af9187e38c19298762905ca738b368eada581c4c560c0030
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958658
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958658
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: To Trizoni

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GRSAE2500005

OTSTimestamp
type: PropertyValue
value: 2026-07-19T04:09:09Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4fd398f133e7f93af9187e38c19298762905ca738b368eada581c4c560c0030. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/GRSAE2500005.
date published: 2026-07-19T04:09:09Z

To Trizoni
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 89.078
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: 0.444
additional property: Energy
  type: PropertyValue
  value: 0.498
additional property: Speechiness
  type: PropertyValue
  value: 0.311
additional property: Acousticness
  type: PropertyValue
  value: 0.715
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.123
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.15
additional property: Loudness (dB)
  type: PropertyValue
  value: -9.002
additional property: Key Name
  type: PropertyValue
  value: E
additional property: Mode Name
  type: PropertyValue
  value: Minor