SWEET SORROW
type: MusicGroup
genre: k-ballad
description: Sweet Sorrow may refer to Sweet Sorrow (band), South Korean vocal group Sweet Sorrow (novel), a 2019 novel by David Nicholls "Sweet Sorrow" (The Green Green Grass), a 2007 TV sitcom episode "Swee
popularity: 24
followers: 10813
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x425fdedea6d83c5fba17fd96a60de5127af56708bf5d7bb16dae57a359918472
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f68da5df-02f7-41b0-9acd-1abf18cf440b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f68da5df-02f7-41b0-9acd-1abf18cf440b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f68da5df-02f7-41b0-9acd-1abf18cf440b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
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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 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 0x425fdedea6d83c5fba17fd96a60de5127af56708bf5d7bb16dae57a359918472. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f68da5df-02f7-41b0-9acd-1abf18cf440b.json and https://artists.proofprofile.net/proofs/artist/f68da5df-02f7-41b0-9acd-1abf18cf440b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
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album: SweeticS
  type: MusicAlbum
  date published: 2008-02-21
album: SweeticS
  type: MusicAlbum
  date published: 2008-02-21
album: Sweetics
  type: MusicAlbum
  date published: 2008-02-21
album: Sweet Sorrow
  type: MusicAlbum
  date published: 2008-09-29
album: Sweetsorrow
  type: MusicAlbum
  date published: 2010-07-19
album: Songs
  type: MusicAlbum
  date published: 2010-08-03
album: Sweet Sorrow 3 Single Part 1,2
  type: MusicAlbum
  date published: 2011-12-13
album: Sweet Sorrow 3 Viva
  type: MusicAlbum
  date published: 2012-01-31
  track: Viva (feat. Lee,Sora (이소라))
    type: MusicRecording
    duration: PT4M23S
    duration ms: 263348
    explicit: false
    by artist: SWEET SORROW
    in album: Sweet Sorrow 3 Viva
      type: MusicAlbum
      date published: 2012-01-31
    genre: k-ballad
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    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
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      value: https://explorer.copyrightchains.com/tx/0xfa135005d9f4bdd683f4e78e075d7a93be546adb2fee4907ea6a2b38979860a7
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    additional property: OTSBitcoinBlock
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    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/960247
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB311210302
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-30T10:42:33Z
    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 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 0xfa135005d9f4bdd683f4e78e075d7a93be546adb2fee4907ea6a2b38979860a7. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/KRB311210302.
      date published: 2026-07-30T10:42:33Z
    audio: Viva (feat. Lee,Sora (이소라))
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      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
        value: 5
      additional property: Danceability
        type: PropertyValue
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      additional property: Energy
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      additional property: Speechiness
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      additional property: Acousticness
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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)
        type: PropertyValue
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      additional property: Loudness (dB)
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      additional property: Key Name
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        type: PropertyValue
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  track: The First Date (첫데이트)
    type: MusicRecording
    duration: PT3M26S
    duration ms: 206939
    explicit: false
    by artist: SWEET SORROW
    in album: Sweet Sorrow 3 Viva
      type: MusicAlbum
      date published: 2012-01-31
    genre: k-ballad
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    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-06-26T00:27:00+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xbdcd651efec07a1095e4d205a90b6c086d85255ba680c8edb407f16c4fdf44e4
    additional property: OTSHash
    additional property: OTSBitcoinBlock
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    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956304
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB311210303
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-02T03:55:08Z
    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 0xbdcd651efec07a1095e4d205a90b6c086d85255ba680c8edb407f16c4fdf44e4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/KRB311210303.
      date published: 2026-07-02T03:55:08Z
    audio: The First Date (첫데이트)
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 126.246
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
      additional property: Danceability
      additional property: Energy
      additional property: Speechiness
      additional property: Acousticness
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
  track: I'll Sing for You (노래할게) [feat. 루시드 폴]
  track: Dear
  track: Good for You (좋겠다) [feat. 오지은, 정준일 & Peppertones]
album: My Husband Got a Family (Original Television Soundtrack) Pt. 1
album: 넝쿨째 굴러온 당신 (Original Television Soundtrack) Pt. 1
album: 넝쿨째 굴러온 당신 (Original Television Soundtrack) Part. 1
album: Dark Cicle (다크 써클) Summer Viva Edition
album: The Story of December (12월의 이야기)
album: 4Th #1_Just Get Away
album: 괜찮아 떠나
album: SWEET SORROW Winter Project Single Again And Again
album: Beautiful
album: FOR LOVERS ONLY
album: 연애의 발견 OST Part 1
album: Twenty' Special OST Part.2
album: Girl Who Sees Smell OST Part.6
album: Girl Who Sees Smell (Original Television Soundtrack), Pt.6
album: Let's make love
album: Aheundong
album: FOR LOSERS ONLY
album: 2015 Winter Project Companion
album: No Dae-bak
album: HAPPY NEW YEAR
album: Sign
album: First Love
album: SWEET SORROW 5TH PART 1 NEW DAY
album: SWEET SORROW 5TH PART1 NEWDAY
album: SWEET SORROW SPECIAL SINGLE
album: SWEET SORROW Single
album: Please Don't Go
album: Merry Christmas JAM!
album: THE M Pt. 4
album: Love Drive (Feat. meenoi)
album: Nevertheless
album: Wish You′re My Girl
album: Wish You're My Girl
album: Sundowner
track: 한 걸음더
track: Let It Snow (Feat. Sweet Sorrow)

Time Signature
type: PropertyValue
value: 5

Danceability
type: PropertyValue
value: 0.771

Energy
type: PropertyValue
value: 0.317

Speechiness
type: PropertyValue
value: 0.033

Acousticness
type: PropertyValue
value: 0.741

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.177

Valence (Positivity)
type: PropertyValue
value: 0.597

Loudness (dB)
type: PropertyValue
value: -11.393

Key Name
type: PropertyValue
value: D

Mode Name
type: PropertyValue
value: Major

I'll Sing for You (노래할게) [feat. 루시드 폴]
type: MusicRecording
duration: PT4M44S
duration ms: 284621
explicit: false
by artist: SWEET SORROW
in album: Sweet Sorrow 3 Viva
  type: MusicAlbum
  date published: 2012-01-31
genre: k-ballad
isrc code: KRB311210305
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T01:49:11+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd66fdf1a1d92e252b5ff98f5c3a8cc6457367d4494f57e9f5f850c45ab3c36aa
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960334
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960334
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB311210305
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T02:19:15Z
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 0xd66fdf1a1d92e252b5ff98f5c3a8cc6457367d4494f57e9f5f850c45ab3c36aa. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/KRB311210305.
  date published: 2026-07-31T02:19:15Z
audio: I'll Sing for You (노래할게) [feat. 루시드 폴]
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 153.616
  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: 0.449
  additional property: Energy
    type: PropertyValue
    value: 0.163
  additional property: Speechiness
    type: PropertyValue
    value: 0.047
  additional property: Acousticness
    type: PropertyValue
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  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
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  additional property: Loudness (dB)
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  additional property: Key Name
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Dear
type: MusicRecording
duration: PT3M31S
duration ms: 211339
explicit: false
by artist: SWEET SORROW
in album: Sweet Sorrow 3 Viva
  type: MusicAlbum
  date published: 2012-01-31
genre: k-ballad
isrc code: KRB311210306
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T18:22:07+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x70aeae76a0dd388129644424416d9d3c26cab3229b29d7d741340700b3212f11
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960294
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB311210306
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T18:46:00Z
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 0x70aeae76a0dd388129644424416d9d3c26cab3229b29d7d741340700b3212f11. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/KRB311210306.
  date published: 2026-07-30T18:46:00Z
audio: Dear
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 117.744
  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
    type: PropertyValue
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  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.572
  additional property: Energy
    type: PropertyValue
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
    value: 0.837
  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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  additional property: Loudness (dB)
    type: PropertyValue
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  additional property: Key Name
    type: PropertyValue
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  additional property: Mode Name
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Good for You (좋겠다) [feat. 오지은, 정준일 & Peppertones]
type: MusicRecording
duration: PT4M25S
duration ms: 265009
explicit: false
by artist: SWEET SORROW
in album: Sweet Sorrow 3 Viva
  type: MusicAlbum
  date published: 2012-01-31
genre: k-ballad
isrc code: KRB311210313
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-24T16:30:29+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x47988de9edfbe0579a6dbce7d8d1b391da0b25116d5590f14178a6db173db445
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956312
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956312
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB311210313
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T05:09:12Z
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 0x47988de9edfbe0579a6dbce7d8d1b391da0b25116d5590f14178a6db173db445. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/KRB311210313.
  date published: 2026-07-02T05:09:12Z
audio: Good for You (좋겠다) [feat. 오지은, 정준일 & Peppertones]
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  additional property: Tempo (BPM)
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  additional property: Mode (Major/Minor)
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  additional property: Acousticness
    type: PropertyValue
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  additional property: Instrumentalness
    type: PropertyValue
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  additional property: Liveness
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My Husband Got a Family (Original Television Soundtrack) Pt. 1
type: MusicAlbum
date published: 2012-03-30

넝쿨째 굴러온 당신 (Original Television Soundtrack) Pt. 1
type: MusicAlbum
date published: 2012-03-30

넝쿨째 굴러온 당신 (Original Television Soundtrack) Part. 1
type: MusicAlbum
date published: 2012-03-30

Dark Cicle (다크 써클) Summer Viva Edition
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The Story of December (12월의 이야기)
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4Th #1_Just Get Away
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괜찮아 떠나
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date published: 2013-06-27

SWEET SORROW Winter Project Single Again And Again
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date published: 2013-12-04

Beautiful
type: MusicAlbum
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FOR LOVERS ONLY
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Beautiful
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연애의 발견 OST Part 1
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Twenty' Special OST Part.2
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Girl Who Sees Smell OST Part.6
type: MusicAlbum
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Girl Who Sees Smell (Original Television Soundtrack), Pt.6
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  subject of: OpenTimestamps Proof of Existence
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Let's make love
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Aheundong
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FOR LOSERS ONLY
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FOR LOSERS ONLY
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2015 Winter Project Companion
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No Dae-bak
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HAPPY NEW YEAR
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HAPPY NEW YEAR
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Sign
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Sign
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First Love
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SWEET SORROW 5TH PART 1 NEW DAY
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SWEET SORROW 5TH PART1 NEWDAY
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SWEET SORROW SPECIAL SINGLE
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SWEET SORROW Single
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Please Don't Go
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  subject of: OpenTimestamps Proof of Existence
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Merry Christmas JAM!
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THE M Pt. 4
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Love Drive (Feat. meenoi)
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Nevertheless
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  subject of: OpenTimestamps Proof of Existence
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-02T03:30:09Z
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track: Love Drive (Feat. meenoi)

OTSVerificationAPI
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OTSVerifyInstructions
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OpenTimestamps Proof of Existence
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date published: 2026-07-08T03:22:41Z

Small Room (Feat. IU)
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subject of: OpenTimestamps Proof of Existence
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Wish You′re My Girl
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Wish You're My Girl
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Sundowner
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한 걸음더
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  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/KRZ291610200
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 0xf9440133d2563a9cea0a39f5d61df21f2751279eaf4f1be5cf5ecaf8226d6223. 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/KRZ291610200.
  date published: 2026-07-08T03:20:19Z
audio: 한 걸음더
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  additional property: Tempo (BPM)
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    value: 126.15
  additional property: Musical Key
    type: PropertyValue
    value: 4
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.641
  additional property: Energy
    type: PropertyValue
    value: 0.328
  additional property: Speechiness
    type: PropertyValue
    value: 0.039
  additional property: Acousticness
    type: PropertyValue
    value: 0.475
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.934
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.709
  additional property: Loudness (dB)
    type: PropertyValue
    value: -14.466
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Let It Snow (Feat. Sweet Sorrow)
type: MusicRecording
duration: PT2M52S
duration ms: 172750
explicit: false
by artist: Sung Si Kyung
by artist: SWEET SORROW
in album: Winter Wonderland
  type: MusicAlbum
  date published: 2014-12-09
genre: korean-pop
isrc code: KRA491402415
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
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  value: 2026-07-07T02:55:35+00:00
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x5a2276994e65077c55acec63351f84b387b077a469c19a5083cdf274a612a355
additional property: OTSHash
additional property: OTSBitcoinBlock
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  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/KRA491402415
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 0x5a2276994e65077c55acec63351f84b387b077a469c19a5083cdf274a612a355. 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/KRA491402415.
  date published: 2026-07-08T03:20:19Z
audio: Let It Snow (Feat. Sweet Sorrow)
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  additional property: Tempo (BPM)
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    value: 142.477
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.609
  additional property: Energy
    type: PropertyValue
    value: 0.503
  additional property: Speechiness
    type: PropertyValue
    value: 0.037
  additional property: Acousticness
    type: PropertyValue
    value: 0.589
  additional property: Instrumentalness
    type: PropertyValue
    value: 0
  additional property: Liveness
    type: PropertyValue
    value: 0.329
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.602
  additional property: Loudness (dB)
    type: PropertyValue
    value: -9.968
  additional property: Key Name
    type: PropertyValue
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