Black Swan
type: MusicGroup
genre: drone
description: thumb|Black swan The black swan (Cygnus atratus) is a large waterbird, a species of swan which breeds mainly in the southeast and southwest regions of Australia. Within Australia, the black swan is n
popularity: 3
followers: 319
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x1e4af084245398a85a145c14a8ee68679779a53c6ab226a2c44997a0cc46128c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953885
additional property: OTSProofURL
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additional property: OTSRecordURL
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  value: https://artists.proofprofile.net/proofs/artist/0ab92c4f-bba3-4bf8-b5de-eb28896e0148.json
additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/0ab92c4f-bba3-4bf8-b5de-eb28896e0148
additional property: OTSTimestamp
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additional property: OTSCanonicalRecord
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  value: {"copyright_id":"0x1e4af084245398a85a145c14a8ee68679779a53c6ab226a2c44997a0cc46128c","name":"Black Swan","registered_at":"2026-06-15T17:28:22Z","symbol":"NIM0779945","token_address":"0xacff219c6608a02bdc672970265241cbbb213c5f","type":"artist","uuid":"0ab92c4f-bba3-4bf8-b5de-eb28896e0148"}
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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4af084245398a85a145c14a8ee68679779a53c6ab226a2c44997a0cc46128c. Chain 2 (Bitcoin): anchored in block 953885 (2026-06-16T04:12:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0ab92c4f-bba3-4bf8-b5de-eb28896e0148.json and https://artists.proofprofile.net/proofs/artist/0ab92c4f-bba3-4bf8-b5de-eb28896e0148.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T04:12:47Z
  text: {"copyright_id":"0x1e4af084245398a85a145c14a8ee68679779a53c6ab226a2c44997a0cc46128c","name":"Black Swan","registered_at":"2026-06-15T17:28:22Z","symbol":"NIM0779945","token_address":"0xacff219c6608a02bdc672970265241cbbb213c5f","type":"artist","uuid":"0ab92c4f-bba3-4bf8-b5de-eb28896e0148"}
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album: Black Swan 2022
  type: MusicAlbum
  date published: 2023-04-05
track: Jack The Road Hit
  type: MusicRecording
  duration: PT7M10S
  duration ms: 430588
  explicit: false
  by artist: Black Swan
  in album: 2011 Best Weapons
    type: MusicAlbum
    date published: 2011-12-21
  isrc code: NLHR21107531
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
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    value: 2026-07-29T22:46:19+00:00
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  additional property: OTSTimestamp
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    value: 2026-07-29T22:51:26Z
  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 0xe5343f8cc98d4d391967aba100fb9304220ff90f5240c3f7549fb7cd8d609ebb. Chain 2 (Bitcoin): anchored in block 960161 (2026-07-29T22:51:26Z), 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/NLHR21107531.
    date published: 2026-07-29T22:51:26Z
  audio: Jack The Road Hit
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 142.481
    additional property: Musical Key
      type: PropertyValue
      value: 6
    additional property: Mode (Major/Minor)
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      value: 0
    additional property: Time Signature
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    additional property: Danceability
      type: PropertyValue
      value: 0.832
    additional property: Energy
      type: PropertyValue
      value: 0.989
    additional property: Speechiness
      type: PropertyValue
      value: 0.259
    additional property: Acousticness
      type: PropertyValue
      value: 0.023
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.381
    additional property: Liveness
      type: PropertyValue
      value: 0.608
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.37
    additional property: Loudness (dB)
      type: PropertyValue
      value: -7.793
    additional property: Key Name
      type: PropertyValue
      value: F#
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: Passings, Heartbreak
  type: MusicRecording
  duration: PT5M14S
  duration ms: 314784
  explicit: false
  by artist: Black Swan
  in album: SMM: Opiate
    type: MusicAlbum
    date published: 2013-10-29
  isrc code: US2J71308704
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  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
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  additional property: CopyrightChainExplorerURL
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    value: https://explorer.copyrightchains.com/tx/0x8b605d035140e74cec91ab78d78dd88d510a81eab5bae90df51d15c0dbf7af5f
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  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Passings, Heartbreak

OTSVerificationAPI
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value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US2J71308704

OTSTimestamp
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value: 2026-07-31T12:24:41Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b605d035140e74cec91ab78d78dd88d510a81eab5bae90df51d15c0dbf7af5f. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/US2J71308704.
date published: 2026-07-31T12:24:41Z

Passings, Heartbreak
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additional property: Tempo (BPM)
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additional property: Musical Key
  type: PropertyValue
  value: 9
additional property: Mode (Major/Minor)
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  value: 0
additional property: Time Signature
  type: PropertyValue
  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.17
additional property: Energy
  type: PropertyValue
  value: 0.314
additional property: Speechiness
  type: PropertyValue
  value: 0.041
additional property: Acousticness
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  value: 0.385
additional property: Instrumentalness
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  value: 0.896
additional property: Liveness
  type: PropertyValue
  value: 0.147
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.037
additional property: Loudness (dB)
  type: PropertyValue
  value: -16.466
additional property: Key Name
  type: PropertyValue
  value: A
additional property: Mode Name
  type: PropertyValue
  value: Minor