a red letter day
type: MusicGroup
description: "A Red Letter Day" is a song by English synth-pop duo Pet Shop Boys, released on 17 March 1997 as the fourth single from their sixth studio album, Bilingual (1996). It debuted at number 9 on the UK Si
popularity: 10
followers: 144
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954603
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  value: https://artists.proofprofile.net/proofs/artist/c303b834-3d19-4422-9cee-e8c7c41b4ff6.json
additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c303b834-3d19-4422-9cee-e8c7c41b4ff6
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319add951ba8c62a997145c86bcc11f3cf1cd21e39e506910bd0ee59d812cfaf. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c303b834-3d19-4422-9cee-e8c7c41b4ff6.json and https://artists.proofprofile.net/proofs/artist/c303b834-3d19-4422-9cee-e8c7c41b4ff6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T21:47:54Z
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album: I
  type: MusicAlbum
  date published: 2024-10-11
album: broke my promise
  type: MusicAlbum
  date published: 2024-11-15
album: broke my promise
  type: MusicAlbum
  date published: 2024-11-15
album: learning to love solitude
  type: MusicAlbum
  date published: 2024-12-13
album: drafts
  type: MusicAlbum
  date published: 2025-02-14
  track: how to die standing still
    type: MusicRecording
    duration: PT3M20S
    duration ms: 200250
    explicit: false
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    in album: drafts
      type: MusicAlbum
      date published: 2025-02-14
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    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T01:47:31Z
    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 0xc3cae5a2ff2186b25d17f3f1fc6e00257e1f44ef55745b5bbbbcdb7d58559b11. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:47:31Z), 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/QZES82519129.
      date published: 2026-07-21T01:47:31Z
    audio: how to die standing still
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      additional property: Time Signature
        type: PropertyValue
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      additional property: Danceability
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      additional property: Energy
        type: PropertyValue
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      additional property: Speechiness
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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
        type: PropertyValue
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      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.074
      additional property: Loudness (dB)
        type: PropertyValue
        value: -10.223
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
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  track: all the time
    type: MusicRecording
    duration: PT3M20S
    duration ms: 200624
    explicit: false
    by artist: a red letter day
    in album: drafts
      type: MusicAlbum
      date published: 2025-02-14
    isrc code: QZES82519130
    additional property: CopyrightID
    additional property: CopyrightStatus
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    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T21:15:01Z
    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 0x48d2142b502da37d9c4b92ea3582405cfd4b2ed3142db89aca7715fc8a536e7b. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZES82519130.
      date published: 2026-07-20T21:15:01Z
    audio: all the time
      type: AudioObject
      additional property: Tempo (BPM)
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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
        value: 0.902
      additional property: Speechiness
        type: PropertyValue
        value: 0.035
      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: blunt

Acousticness
type: PropertyValue
value: 0.027

Instrumentalness
type: PropertyValue
value: 0.385

Liveness
type: PropertyValue
value: 0.078

Valence (Positivity)
type: PropertyValue
value: 0.181

Loudness (dB)
type: PropertyValue
value: -8.893

Key Name
type: PropertyValue
value: A

Mode Name
type: PropertyValue
value: Major

blunt
type: MusicRecording
duration: PT2M40S
duration ms: 160656
explicit: true
by artist: a red letter day
in album: drafts
  type: MusicAlbum
  date published: 2025-02-14
isrc code: QZES82519131
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
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additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 958612
additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES82519131
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-18T21:29:37Z
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 0x27966969208df520b9a9c822ab542279ac9c7d25f8d64ab52fdc87665ba135a7. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZES82519131.
  date published: 2026-07-18T21:29:37Z
audio: blunt
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 151.172
  additional property: Musical Key
    type: PropertyValue
    value: 6
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.597
  additional property: Energy
    type: PropertyValue
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  additional property: Speechiness
    type: PropertyValue
    value: 0.034
  additional property: Acousticness
    type: PropertyValue
    value: 0.04
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.084
  additional property: Liveness
    type: PropertyValue
    value: 0.087
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.358
  additional property: Loudness (dB)
    type: PropertyValue
    value: -8.207
  additional property: Key Name
    type: PropertyValue
    value: F#
  additional property: Mode Name
    type: PropertyValue
    value: Major