Sylvia Vrethammar
type: MusicGroup
genre: swedish ballads
description: Eva Sylvia Vrethammar (born 22 August 1945) is a Swedish traditional pop and jazz singer. Vrethammar was born in Uddevalla, Sweden. She is the daughter of Harald Vrethammar, an education official, a
popularity: 25
followers: 4251
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additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSProofURL
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additional property: OTSVerificationAPI
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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 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
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  date published: 2026-06-12T19:24:56Z
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album: Tycker om dej
  type: MusicAlbum
  date published: 1969-01-01
album: Sylvia
  type: MusicAlbum
  date published: 1970-01-01
album: Dansa samba med mej
  type: MusicAlbum
  date published: 1971-01-01
  track: Take Me Back To Piaui
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    by artist: Sylvia Vrethammar
    in album: Dansa samba med mej
      type: MusicAlbum
      date published: 1971-01-01
    genre: swedish ballads
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    additional property: OTSTimestamp
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      value: 2026-07-02T16:51:38Z
    additional property: OTSVerifyInstructions
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      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
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      date published: 2026-07-02T16:51:38Z
    audio: Take Me Back To Piaui
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album: Gamla Stan
  type: MusicAlbum
  date published: 1972-01-01
  track: Gamla Stan
    type: MusicRecording
    duration: PT3M25S
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    by artist: Sylvia Vrethammar
    in album: Gamla Stan
      type: MusicAlbum
      date published: 1972-01-01
    genre: swedish ballads
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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 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
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      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91af2af04f23508610d9a969d2cc27e7502a5eccad2d8548b5294b9fc73f3c58. 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/SEUM71201294.
      date published: 2026-07-08T03:20:19Z
    audio: Gamla Stan
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      additional property: Acousticness
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      additional property: Liveness
      additional property: Valence (Positivity)
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  track: En gammal melodi
  track: En dröm är en dröm
album: Jag sjunger för dej
album: Stardust & Sunshine
album: Somebody Loves You
album: Leenden i regn
album: Chateau Sylvia
album: In Goodmansland
album: Ricardo
album: Rio De Janeiro Blue
album: Samba Brasil
album: Na-Na-Na, Nee-Nee-Nee, No-No-No
album: Frau im besten Mannesalter
album: Öppna Dina Ögon
album: Wenn du da bist
album: Ladylike
album: Ladylike (English Version)
album: Something My Heart Might Say
album: Sylviva - De bästa klassikerna
album: Mona Lisa
album: Homebound
album: Samstag Nacht
album: Ich kann dir meine Liebe geben
album: Mambo D'amor
album: Faller för dej
album: Sylvia Vrethammar / Sommar! Samba! Sylvia!
album: Champagne
album: Te Quiero - 40 Years On Stage
album: Musik liegt in der Luft (Radio-Version)
album: Musik (Radio-Version)
album: Trivialitet
album: Musik (Svensk Version)
album: Musik
album: Musik (Swedish Version)
album: Aldrig Igen
album: Aldrig igen
album: The World Is Calling
album: The Girl from Uddevalla
album: Round Midnight
album: By Invitation Only (Live)
album: Vortex
album: When You're Smiling
album: Can't Buy Me Love
album: More Champagne
album: Broken Soul
album: Cirkus
album: From the Top
track: Dansa samba med mej
track: L.O.V.E. - Original 1979 Live Recording
track: Spanish Eyes (Moon Over Naples) - Original 1979 Live Recording
track: Remember When - Original 1979 Live Recording

Acousticness
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Instrumentalness
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Liveness
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Valence (Positivity)
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Loudness (dB)
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Key Name
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Mode Name
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En gammal melodi
type: MusicRecording
duration: PT3M50S
duration ms: 230680
explicit: false
by artist: Sylvia Vrethammar
in album: Gamla Stan
  type: MusicAlbum
  date published: 1972-01-01
genre: swedish ballads
isrc code: SEUM71201293
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additional property: CopyrightStatus
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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 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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09cc49207827b6b8e700fa529fa129febbed3450e9ad5b1ffab7864de7f69f69. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/SEUM71201293.
  date published: 2026-07-30T01:34:28Z
audio: En gammal melodi
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  additional property: Mode (Major/Minor)
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  additional property: Speechiness
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En dröm är en dröm
type: MusicRecording
duration: PT3M18S
duration ms: 198186
explicit: false
by artist: Sylvia Vrethammar
in album: Gamla Stan
  type: MusicAlbum
  date published: 1972-01-01
genre: swedish ballads
isrc code: SEUM71201297
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T08:26:41Z
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 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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c857f40b866ad74bd50d45fc68c4bee04c280d2dc75d731105889e157548d1. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/SEUM71201297.
  date published: 2026-07-31T08:26:41Z
audio: En dröm är en dröm
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  additional property: Tempo (BPM)
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  additional property: Mode (Major/Minor)
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    type: PropertyValue
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    type: PropertyValue
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Jag sjunger för dej
type: MusicAlbum
date published: 1973-01-01
track: Lasta inte mej
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  duration: PT3M32S
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  by artist: Sylvia Vrethammar
  in album: Jag sjunger för dej
    type: MusicAlbum
    date published: 1973-01-01
  genre: swedish ballads
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  additional property: CopyrightChainExplorerURL
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  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: 2026-07-20T04:30:07Z
  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 0x86f1fbddabb32e397fff60b14950f6d32454c8045b0ddb300634e7b16d921671. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T04:30:07Z), 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/SEBFO7207020.
    date published: 2026-07-20T04:30:07Z
  audio: Lasta inte mej
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    additional property: Mode (Major/Minor)
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    additional property: Danceability
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Stardust & Sunshine
type: MusicAlbum
date published: 1975-01-01

Somebody Loves You
type: MusicAlbum
date published: 1976-01-01

Leenden i regn
type: MusicAlbum
date published: 1977-01-01

Chateau Sylvia
type: MusicAlbum
date published: 1979-01-01

In Goodmansland
type: MusicAlbum
date published: 1983-01-01

Ricardo
type: MusicAlbum
date published: 1983-06-25

Rio De Janeiro Blue
type: MusicAlbum
date published: 1985-01-01

Samba Brasil
type: MusicAlbum
date published: 1987-07-09

Na-Na-Na, Nee-Nee-Nee, No-No-No
type: MusicAlbum
date published: 1989-07-23

Frau im besten Mannesalter
type: MusicAlbum
date published: 1989-08-06

Öppna Dina Ögon
type: MusicAlbum
date published: 1990-01-01

Wenn du da bist
type: MusicAlbum
date published: 1991-05-14

Ladylike
type: MusicAlbum
date published: 1991-05-28

Ladylike (English Version)
type: MusicAlbum
date published: 1991-06-11

Something My Heart Might Say
type: MusicAlbum
date published: 1994-09-05

Something My Heart Might Say
type: MusicAlbum
date published: 1995

Sylviva - De bästa klassikerna
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track: En lärling på våran gård
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-20T05:55:47Z
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Mona Lisa
type: MusicAlbum
date published: 2001-07-24

Homebound
type: MusicAlbum
date published: 2001-12-12

Samstag Nacht
type: MusicAlbum
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Ich kann dir meine Liebe geben
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date published: 2002-04-17

Mambo D'amor
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Faller för dej
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Sylvia Vrethammar / Sommar! Samba! Sylvia!
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Champagne
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-06T06:56:49Z
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Champagne
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date published: 2006-01-01

Te Quiero - 40 Years On Stage
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Musik liegt in der Luft (Radio-Version)
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Musik (Radio-Version)
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Trivialitet
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-06-13T12:47:07Z
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Trivialitet
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date published: 2013-02-24

Musik (Svensk Version)
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Musik
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date published: 2013-04-23

Musik
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Musik (Swedish Version)
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Musik
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Aldrig Igen
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Aldrig igen
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The World Is Calling
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The Girl from Uddevalla
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date published: 2016-07-03

The Girl from Uddevalla
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date published: 2017-03-24

Round Midnight
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-18T07:54:29Z
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By Invitation Only (Live)
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date published: 2019-02-22

Vortex
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When You're Smiling
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Can't Buy Me Love
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More Champagne
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date published: 2022-05-06

Broken Soul
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date published: 2023-12-29

Cirkus
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-04T10:04:33Z
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From the Top
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Dansa samba med mej
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T06:57:05Z
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L.O.V.E. - Original 1979 Live Recording
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by artist: Bert Kaempfert
by artist: Sylvia Vrethammar
in album: The Complete Concert 1979
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genre: easy-listening
genre: orchestra
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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 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 0x4d9328b28eb69f35b37b8153bb22d3d47b970be8fc94e839f0338b21ee088b18. 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/DEF067909200.
  date published: 2026-07-08T03:22:41Z
audio: L.O.V.E. - Original 1979 Live Recording
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 102.455
  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: 0.565
  additional property: Energy
    type: PropertyValue
    value: 0.37
  additional property: Speechiness
    type: PropertyValue
    value: 0.046
  additional property: Acousticness
    type: PropertyValue
    value: 0.801
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.923
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.624
  additional property: Loudness (dB)
    type: PropertyValue
    value: -16.86
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

Spanish Eyes (Moon Over Naples) - Original 1979 Live Recording
type: MusicRecording
duration: PT2M47S
duration ms: 167573
explicit: false
by artist: Bert Kaempfert
by artist: Sylvia Vrethammar
in album: The Complete Concert 1979
  type: MusicAlbum
  date published: 2008-01-01
genre: easy-listening
genre: orchestra
genre: big-band
genre: exotica
isrc code: DEF067909210
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T04:10:19+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7930616189f488a1698fdf7f7dacd5d80a3a95966db7e1aebebacdf011ac9e86
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960344
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960344
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF067909210
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T04:14:58Z
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 0x7930616189f488a1698fdf7f7dacd5d80a3a95966db7e1aebebacdf011ac9e86. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/DEF067909210.
  date published: 2026-07-31T04:14:58Z
audio: Spanish Eyes (Moon Over Naples) - Original 1979 Live Recording
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 129.036
  additional property: Musical Key
    type: PropertyValue
    value: 4
  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: 0.355
  additional property: Speechiness
    type: PropertyValue
    value: 0.06
  additional property: Acousticness
    type: PropertyValue
    value: 0.671
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.016
  additional property: Liveness
    type: PropertyValue
    value: 0.695
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.362
  additional property: Loudness (dB)
    type: PropertyValue
    value: -19.075
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Major

Remember When - Original 1979 Live Recording
type: MusicRecording
duration: PT2M26S
duration ms: 146200
explicit: false
by artist: Bert Kaempfert
by artist: Sylvia Vrethammar
in album: The Complete Concert 1979
  type: MusicAlbum
  date published: 2008-01-01
genre: easy-listening
genre: orchestra
genre: big-band
genre: exotica
isrc code: DEF067909230
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T13:05:35+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xeb0e132d1519e7b2154c51681b6d1fc23524ac15e5d6ddc7b16aa480d8b5b7dd
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960407
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF067909230
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T13:26:30Z
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 0xeb0e132d1519e7b2154c51681b6d1fc23524ac15e5d6ddc7b16aa480d8b5b7dd. Chain 2 (Bitcoin): anchored in block 960407 (2026-07-31T13:26:30Z), 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/DEF067909230.
  date published: 2026-07-31T13:26:30Z
audio: Remember When - Original 1979 Live Recording
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 145.798
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.537
  additional property: Energy
    type: PropertyValue
    value: 0.43
  additional property: Speechiness
    type: PropertyValue
    value: 0.201
  additional property: Acousticness
    type: PropertyValue
    value: 0.734
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.89
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.787
  additional property: Loudness (dB)
    type: PropertyValue
    value: -16.753
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major