Sofia
type: MusicGroup
genre: bossa nova
description: Sofia is the capital and largest city of Bulgaria. It is situated in the Sofia Valley at the foot of the Vitosha mountain, in the western part of the country. The city is built west of the Iskar river
popularity: 24
followers: 1400
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additional property: OTSVerifyInstructions
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  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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ab8c8f03df7a8b806e0f0c8b781f24d297e1671d212c22ba5f4ddfb65d7a54. 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/d817e117-c1a1-4340-b574-cddb912944b2.json and https://artists.proofprofile.net/proofs/artist/d817e117-c1a1-4340-b574-cddb912944b2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:28:13Z
album: Terra Desmedida
  type: MusicAlbum
  date published: 1983-01-01
album: Skratt
  type: MusicAlbum
  date published: 1999-01-01
  track: Jesus är min vän
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    by artist: Sofia
    in album: Skratt
      type: MusicAlbum
      date published: 1999-01-01
    genre: bossa nova
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    additional property: OTSTimestamp
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    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
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      date published: 2026-07-21T08:39:15Z
    audio: Jesus är min vän
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        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: 0.782
      additional property: Energy
        type: PropertyValue
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      additional property: Speechiness
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        value: 0.03
      additional property: Acousticness
        type: PropertyValue
        value: 0.043
      additional property: Instrumentalness
        type: PropertyValue
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      additional property: Liveness
        type: PropertyValue
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      additional property: Valence (Positivity)
        type: PropertyValue
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album: Skratt
  type: MusicAlbum
  date published: 1999-01-01
album: Sonhos
  type: MusicAlbum
  date published: 2000-02-14
album: Ja vill ha allt
  type: MusicAlbum
  date published: 2000-08-12
album: Bossa Latino Lite
  type: MusicAlbum
  date published: 2006
album: Sofia
  type: MusicAlbum
  date published: 2007
album: In Love With Nova Bossa
  type: MusicAlbum
  date published: 2007
album: In Love With Nova Bossa
  type: MusicAlbum
  date published: 2007
  track: So Nice (Samba De Verao)
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      type: MusicAlbum
      date published: 2007
    genre: bossa nova
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    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
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      date published: 2026-07-15T17:43:15Z
    audio: So Nice (Samba De Verao)
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album: Search & Destroy
album: London Calling
album: Search & Destroy - A Punk Lounge Experience
album: By Request... Lite & Easy
album: Jag Vill Ha Allt
album: Without you (Radio Edit)
album: I Believe
album: Believe In Me
album: Ring Ding Dong
album: Once Upon a Time
album: The sunny side
album: Midway EP
album: Midway
album: I Saw a Ship - Single
album: Are You Sleeping Brother John - Single
album: Ten Little Indians - Single
album: Pat-a-Cake Baker's Man - Single
album: Baa Baa Black Sheep - Single
album: Song of Sixpence - Single
album: Georgie Porgie - Single
album: Hickory Dickory Dock - Single
album: Mary Had a Little Lamp - Single
album: La data di un ritorno
album: I Had a Little Nut Tree - Single
album: Polly Put the Kettle On - Single
album: Metropolitan Love
album: Nevozvratno
album: Là Do Em Xui Thôi
album: Chạm Khẽ Tim Anh Một Chút Thôi
album: Addicted Love
album: Twilight Tides
album: Solar Sirens

Time Signature
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value: 4

Danceability
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value: 0.663

Energy
type: PropertyValue
value: 0.333

Speechiness
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value: 0.06

Acousticness
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Instrumentalness
type: PropertyValue
value: 0.005

Liveness
type: PropertyValue
value: 0.112

Valence (Positivity)
type: PropertyValue
value: 0.612

Loudness (dB)
type: PropertyValue
value: -11.901

Key Name
type: PropertyValue
value: D

Mode Name
type: PropertyValue
value: Major

Search & Destroy
type: MusicAlbum
date published: 2008

London Calling
type: MusicAlbum
date published: 2008-05-07

Search & Destroy
type: MusicAlbum
date published: 2008-05-23

Search & Destroy - A Punk Lounge Experience
type: MusicAlbum
date published: 2008-05-23

By Request... Lite & Easy
type: MusicAlbum
date published: 2009

Jag Vill Ha Allt
type: MusicAlbum
date published: 2009-01-01

Without you (Radio Edit)
type: MusicAlbum
date published: 2012-04-15

I Believe
type: MusicAlbum
date published: 2012-08-19

Believe In Me
type: MusicAlbum
date published: 2013-06-04

Ring Ding Dong
type: MusicAlbum
date published: 2013-08-26

Once Upon a Time
type: MusicAlbum
date published: 2014-03-25

The sunny side
type: MusicAlbum
date published: 2015-08-30

Midway EP
type: MusicAlbum
date published: 2016-05-05

Midway
type: MusicAlbum
date published: 2016-08-29

I Saw a Ship - Single
type: MusicAlbum
date published: 2016-12-28

Are You Sleeping Brother John - Single
type: MusicAlbum
date published: 2016-12-28

Ten Little Indians - Single
type: MusicAlbum
date published: 2016-12-28

Pat-a-Cake Baker's Man - Single
type: MusicAlbum
date published: 2016-12-28

Baa Baa Black Sheep - Single
type: MusicAlbum
date published: 2016-12-28

Song of Sixpence - Single
type: MusicAlbum
date published: 2016-12-28

Georgie Porgie - Single
type: MusicAlbum
date published: 2016-12-28

Hickory Dickory Dock - Single
type: MusicAlbum
date published: 2016-12-28

Mary Had a Little Lamp - Single
type: MusicAlbum
date published: 2017-03-09

La data di un ritorno
type: MusicAlbum
date published: 2017-03-16

I Had a Little Nut Tree - Single
type: MusicAlbum
date published: 2017-05-07

Polly Put the Kettle On - Single
type: MusicAlbum
date published: 2017-05-07

Metropolitan Love
type: MusicAlbum
date published: 2017-05-23

Nevozvratno
type: MusicAlbum
date published: 2019-02-23

Là Do Em Xui Thôi
type: MusicAlbum
date published: 2023-02-06
track: Là Do Em Xui Thôi
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  duration: PT3M35S
  duration ms: 215833
  explicit: false
  by artist: Sofia
  in album: Là Do Em Xui Thôi
    type: MusicAlbum
    date published: 2023-02-06
  genre: bossa nova
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  additional property: OTSVerificationAPI
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  additional property: OTSTimestamp
    type: PropertyValue
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  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 0xff0b9c016d9e5941c291e5466bd4b5c3f0b47462c279daa5630b7a3149a56880. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/VNR011132100.
    date published: 2026-07-16T16:14:30Z
  audio: Là Do Em Xui Thôi
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      type: PropertyValue
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    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
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    additional property: Energy
      type: PropertyValue
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    additional property: Speechiness
      type: PropertyValue
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    additional property: Acousticness
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      type: PropertyValue
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      type: PropertyValue
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Chạm Khẽ Tim Anh Một Chút Thôi
type: MusicAlbum
date published: 2023-02-17
track: Chạm Khẽ Tim Anh Một Chút Thôi
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  by artist: Sofia
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    type: MusicAlbum
    date published: 2023-02-17
  genre: bossa nova
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  additional property: OTSVerificationAPI
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  additional property: OTSTimestamp
    type: PropertyValue
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  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 0xe0f17fcc5019210db2e0dd64eb2e2c741de62f194caad017803bc1d4fd9c3837. 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/VNR011132105.
    date published: 2026-07-05T10:01:46Z
  audio: Chạm Khẽ Tim Anh Một Chút Thôi
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
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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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      type: PropertyValue
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    additional property: Speechiness
      type: PropertyValue
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    additional property: Acousticness
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    additional property: Instrumentalness
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      type: PropertyValue
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Addicted Love
type: MusicAlbum
date published: 2024-05-01

Twilight Tides
type: MusicAlbum
date published: 2024-05-02

Solar Sirens
type: MusicAlbum
date published: 2024-05-02