Last Year's Tragedy
type: MusicGroup
popularity: 8
followers: 2387
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf8a42cb713b51c54e7258d724908aafcd233063e2c2f473d45b5bebcd3a387cc
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8da8f7bc-869f-4757-83b7-a0230f63574c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8da8f7bc-869f-4757-83b7-a0230f63574c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8da8f7bc-869f-4757-83b7-a0230f63574c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf8a42cb713b51c54e7258d724908aafcd233063e2c2f473d45b5bebcd3a387cc","name":"Last Year's Tragedy","registered_at":"2026-06-17T15:02:12Z","symbol":"NIM1432185","token_address":"0xad322739eaf6c08069c220db5c854d408884f486","type":"artist","uuid":"8da8f7bc-869f-4757-83b7-a0230f63574c"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a42cb713b51c54e7258d724908aafcd233063e2c2f473d45b5bebcd3a387cc. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8da8f7bc-869f-4757-83b7-a0230f63574c.json and https://artists.proofprofile.net/proofs/artist/8da8f7bc-869f-4757-83b7-a0230f63574c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0xf8a42cb713b51c54e7258d724908aafcd233063e2c2f473d45b5bebcd3a387cc","name":"Last Year's Tragedy","registered_at":"2026-06-17T15:02:12Z","symbol":"NIM1432185","token_address":"0xad322739eaf6c08069c220db5c854d408884f486","type":"artist","uuid":"8da8f7bc-869f-4757-83b7-a0230f63574c"}
album: Challenge Accepted
  type: MusicAlbum
  date published: 2013-12-07
album: Bury Your Fallen Dreams
  type: MusicAlbum
  date published: 2015-08-22
album: Perihelion
  type: MusicAlbum
  date published: 2019-10-21
album: Pounds for Flesh
  type: MusicAlbum
  date published: 2020-05-12
album: Amongst Lions
  type: MusicAlbum
  date published: 2021-01-14
  track: Mammoth
    type: MusicRecording
    duration: PT5M5S
    duration ms: 305838
    explicit: false
    by artist: Last Year's Tragedy
    in album: Amongst Lions
      type: MusicAlbum
      date published: 2021-01-14
    isrc code: TCAFI2163022
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
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      type: PropertyValue
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    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956728
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFI2163022
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T01:43:49Z
    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 0xf5bac488dceee63390cf64da9323f090ca7a56d65a25ec5968804bc994986685. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAFI2163022.
      date published: 2026-07-05T01:43:49Z
    audio: Mammoth
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 139.971
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
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      additional property: Time Signature
        type: PropertyValue
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      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
        type: PropertyValue
        value: 0.001
      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: 0.19
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.064
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
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  track: Violation
    type: MusicRecording
    duration: PT4M4S
    duration ms: 244222
    explicit: false
    by artist: Last Year's Tragedy
    in album: Amongst Lions
      type: MusicAlbum
      date published: 2021-01-14
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    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
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    additional property: OTSBitcoinBlock
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    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958761
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFI2163069
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T18:55:49Z
    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 0x9d9ddfabdee53ee8cdc03f1503fa0dad6443594f61245cd6a4697cf4a35bc3f6. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:55:49Z), 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/TCAFI2163069.
      date published: 2026-07-19T18:55:49Z
    audio: Violation
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 135.048
      additional property: Musical Key
        type: PropertyValue
        value: 8
      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
        value: 0.074
      additional property: Acousticness
        type: PropertyValue
        value: 0
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: Last Year's Tragedy

Instrumentalness
type: PropertyValue
value: 0.002

Liveness
type: PropertyValue
value: 0.079

Valence (Positivity)
type: PropertyValue
value: 0.274

Loudness (dB)
type: PropertyValue
value: -4.116

Key Name
type: PropertyValue
value: Ab

Mode Name
type: PropertyValue
value: Major

Last Year's Tragedy
type: MusicAlbum
date published: 2024-07-12