sky city
type: MusicGroup
genre: lo-fi beats
description: Skycity or Sky City may refer to: Businesses and commercial buildings DJI Sky City, a two-tower building in Nanshan, Shanzhen, China Sky City (shopping mall), a shopping mall in Zhubei, Hsinchu Count
popularity: 29
followers: 233
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbca923cfa8727074d5e88e01ef3105245c7024bf0496bcc0ac2441f5c494b522
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/bd4e0b47-e2ca-4e9c-b5a7-d29c51b5174b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/bd4e0b47-e2ca-4e9c-b5a7-d29c51b5174b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/bd4e0b47-e2ca-4e9c-b5a7-d29c51b5174b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xbca923cfa8727074d5e88e01ef3105245c7024bf0496bcc0ac2441f5c494b522","name":"sky city","registered_at":"2026-06-12T08:33:29Z","symbol":"NIM0243418","token_address":"0x4085529a8d3c94c48702740863b9f08df67441ce","type":"artist","uuid":"bd4e0b47-e2ca-4e9c-b5a7-d29c51b5174b"}
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 0xbca923cfa8727074d5e88e01ef3105245c7024bf0496bcc0ac2441f5c494b522. 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/bd4e0b47-e2ca-4e9c-b5a7-d29c51b5174b.json and https://artists.proofprofile.net/proofs/artist/bd4e0b47-e2ca-4e9c-b5a7-d29c51b5174b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0xbca923cfa8727074d5e88e01ef3105245c7024bf0496bcc0ac2441f5c494b522","name":"sky city","registered_at":"2026-06-12T08:33:29Z","symbol":"NIM0243418","token_address":"0x4085529a8d3c94c48702740863b9f08df67441ce","type":"artist","uuid":"bd4e0b47-e2ca-4e9c-b5a7-d29c51b5174b"}
album: Coming Home
  type: MusicAlbum
  date published: 2022-01-07
album: Coming Home
  type: MusicAlbum
  date published: 2022-01-07
album: Peaceful Arrival
  type: MusicAlbum
  date published: 2022-01-28
album: Atmosphere
  type: MusicAlbum
  date published: 2022-02-18
album: Ocean Blue
  type: MusicAlbum
  date published: 2022-03-11
album: New Sun
  type: MusicAlbum
  date published: 2022-04-08
album: Hyde Park
  type: MusicAlbum
  date published: 2022-04-29
album: Tate Modern
  type: MusicAlbum
  date published: 2022-05-27
album: Holloway Road
  type: MusicAlbum
  date published: 2022-07-01
album: Shoreditch
  type: MusicAlbum
  date published: 2022-07-29
album: Zero Gravity
  type: MusicAlbum
  date published: 2023-02-10
  track: Zero Gravity
    type: MusicRecording
    duration: PT1M30S
    duration ms: 90389
    explicit: false
    by artist: sky city
    in album: Zero Gravity
      type: MusicAlbum
      date published: 2023-02-10
    genre: lo-fi beats
    isrc code: GX89G2332473
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T12:49:30+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x6ab0506050d3d13fdc71a0d86b1caf3f367a8db8ecf557a0b1af5e63db4e103a
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959009
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959009
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX89G2332473
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T13:14:47Z
    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 0x6ab0506050d3d13fdc71a0d86b1caf3f367a8db8ecf557a0b1af5e63db4e103a. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T13:14:47Z), 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/GX89G2332473.
      date published: 2026-07-21T13:14:47Z
    audio: Zero Gravity
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 153.985
      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: 0.672
      additional property: Energy
        type: PropertyValue
        value: 0.4
      additional property: Speechiness
        type: PropertyValue
        value: 0.035
      additional property: Acousticness
        type: PropertyValue
        value: 0.923
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.844
      additional property: Liveness
        type: PropertyValue
        value: 0.107
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.333
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.094
      additional property: Key Name
        type: PropertyValue
        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: zero gravity
  type: MusicAlbum
  date published: 2023-02-10
album: Starship
  type: MusicAlbum
  date published: 2023-02-24
album: starship
  type: MusicAlbum
  date published: 2023-02-24
album: Equinox
  type: MusicAlbum
  date published: 2023-03-17
  track: Equinox
    type: MusicRecording
    duration: PT1M14S
    duration ms: 74805
    explicit: false
    by artist: sky city
    in album: Equinox
      type: MusicAlbum
      date published: 2023-03-17
    genre: lo-fi beats
    isrc code: GX8KD2305265
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T17:55:23+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xf3047ec817109452d3952c960dd9ac90fb40b086711723cdac83bdd150b69f7c
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959047
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959047
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX8KD2305265
    additional property: OTSTimestamp
    additional property: OTSVerifyInstructions
    subject of: OpenTimestamps Proof of Existence
    audio: Equinox
album: equinox
album: Aqua World
album: Planet 742
album: Past The Milky Way
album: Past the Milky Way
album: cosmic connection
album: Coffee Beans
album: air
album: relic
album: near-perfect vacuum
album: quantum fluctuations
album: a second
album: an hour

OTSTimestamp
type: PropertyValue
value: 2026-07-21T20:58:42Z

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

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3047ec817109452d3952c960dd9ac90fb40b086711723cdac83bdd150b69f7c. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:58:42Z), 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/GX8KD2305265.
date published: 2026-07-21T20:58:42Z

Equinox
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 77.026
additional property: Musical Key
  type: PropertyValue
  value: 10
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 4
additional property: Danceability
  type: PropertyValue
  value: 0.772
additional property: Energy
  type: PropertyValue
  value: 0.427
additional property: Speechiness
  type: PropertyValue
  value: 0.136
additional property: Acousticness
  type: PropertyValue
  value: 0.834
additional property: Instrumentalness
  type: PropertyValue
  value: 0.698
additional property: Liveness
  type: PropertyValue
  value: 0.11
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.352
additional property: Loudness (dB)
  type: PropertyValue
  value: -11.26
additional property: Key Name
  type: PropertyValue
  value: Bb
additional property: Mode Name
  type: PropertyValue
  value: Major

equinox
type: MusicAlbum
date published: 2023-03-17

Aqua World
type: MusicAlbum
date published: 2023-04-14

Aqua World
type: MusicAlbum
date published: 2023-04-14
track: Aqua World
  type: MusicRecording
  duration: PT1M15S
  duration ms: 75555
  explicit: false
  by artist: sky city
  in album: Aqua World
    type: MusicAlbum
    date published: 2023-04-14
  genre: lo-fi beats
  isrc code: GX8LD2339866
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-21T04:02:46+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x3cac6aca845d4bbccb620dbf8d85202544c234c3649b6c3f20a7295eb787e50c
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958965
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958965
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX8LD2339866
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-21T04:29:05Z
  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 0x3cac6aca845d4bbccb620dbf8d85202544c234c3649b6c3f20a7295eb787e50c. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/GX8LD2339866.
    date published: 2026-07-21T04:29:05Z
  audio: Aqua World
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 162.008
    additional property: Musical Key
      type: PropertyValue
      value: 5
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.612
    additional property: Energy
      type: PropertyValue
      value: 0.451
    additional property: Speechiness
      type: PropertyValue
      value: 0.075
    additional property: Acousticness
      type: PropertyValue
      value: 0.656
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.524
    additional property: Liveness
      type: PropertyValue
      value: 0.093
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.608
    additional property: Loudness (dB)
      type: PropertyValue
      value: -9.437
    additional property: Key Name
      type: PropertyValue
      value: F
    additional property: Mode Name
      type: PropertyValue
      value: Major

Planet 742
type: MusicAlbum
date published: 2023-04-21
track: Planet 742
  type: MusicRecording
  duration: PT1M38S
  duration ms: 98313
  explicit: false
  by artist: sky city
  in album: Planet 742
    type: MusicAlbum
    date published: 2023-04-21
  genre: lo-fi beats
  isrc code: GX8LD2386945
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-19T05:47:20+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x91b228e06b49f2fa602de7b71822b35d460f7ddfbf4c958a9733852f4b0230a8
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958680
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958680
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX8LD2386945
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-19T06:04:14Z
  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 0x91b228e06b49f2fa602de7b71822b35d460f7ddfbf4c958a9733852f4b0230a8. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/GX8LD2386945.
    date published: 2026-07-19T06:04:14Z
  audio: Planet 742
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 82.894
    additional property: Musical Key
      type: PropertyValue
      value: 0
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.595
    additional property: Energy
      type: PropertyValue
      value: 0.437
    additional property: Speechiness
      type: PropertyValue
      value: 0.139
    additional property: Acousticness
      type: PropertyValue
      value: 0.945
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.783
    additional property: Liveness
      type: PropertyValue
      value: 0.09
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.262
    additional property: Loudness (dB)
      type: PropertyValue
      value: -8.997
    additional property: Key Name
      type: PropertyValue
      value: C
    additional property: Mode Name
      type: PropertyValue
      value: Major

Planet 742
type: MusicAlbum
date published: 2023-04-21

Past The Milky Way
type: MusicAlbum
date published: 2023-04-28

Past the Milky Way
type: MusicAlbum
date published: 2023-04-28
track: Past the Milky Way
  type: MusicRecording
  duration: PT1M58S
  duration ms: 118588
  explicit: false
  by artist: sky city
  in album: Past the Milky Way
    type: MusicAlbum
    date published: 2023-04-28
  genre: lo-fi beats
  isrc code: GX8LD2349529
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-06T01:01:53+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x33c7b9fe9cfcb6c70aa902c59f912fdc81ccd93b8339809f737b6e5d9828152c
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956856
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956856
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GX8LD2349529
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-06T01:25:57Z
  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 0x33c7b9fe9cfcb6c70aa902c59f912fdc81ccd93b8339809f737b6e5d9828152c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GX8LD2349529.
    date published: 2026-07-06T01:25:57Z
  audio: Past the Milky Way
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 85.049
    additional property: Musical Key
      type: PropertyValue
      value: 5
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.528
    additional property: Energy
      type: PropertyValue
      value: 0.414
    additional property: Speechiness
      type: PropertyValue
      value: 0.027
    additional property: Acousticness
      type: PropertyValue
      value: 0.781
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.916
    additional property: Liveness
      type: PropertyValue
      value: 0.107
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.096
    additional property: Loudness (dB)
      type: PropertyValue
      value: -9.927
    additional property: Key Name
      type: PropertyValue
      value: F
    additional property: Mode Name
      type: PropertyValue
      value: Major

cosmic connection
type: MusicAlbum
date published: 2023-05-12

Coffee Beans
type: MusicAlbum
date published: 2024-05-17
track: Coffee Beans
  type: MusicRecording
  duration: PT2M12S
  duration ms: 132000
  explicit: false
  by artist: sky city
  in album: Coffee Beans
    type: MusicAlbum
    date published: 2024-05-17
  genre: lo-fi beats
  isrc code: US3DF2453849
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-15T12:10:46+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x3f37c7a0f022ced038c9d51de366f77dea6b0d277c005d8a596f92a8e221d796
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 958157
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/958157
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US3DF2453849
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-15T15:11:36Z
  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
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