Tốp Ca
type: MusicGroup
genre: vinahouse
popularity: 15
followers: 204
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1448e43bf036d2cad53898599260aedaaead341f3c6fbecd7a0e7798b019de86
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953713
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953713
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/80dc3fc7-b2cc-4212-9820-8ea0916c8688.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/80dc3fc7-b2cc-4212-9820-8ea0916c8688.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/80dc3fc7-b2cc-4212-9820-8ea0916c8688
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T00:33:41Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x1448e43bf036d2cad53898599260aedaaead341f3c6fbecd7a0e7798b019de86","name":"Tốp Ca","registered_at":"2026-06-14T17:57:07Z","symbol":"NIM0531417","token_address":"0xab50d6334a39d836ff90a8e38eb443e2634a0347","type":"artist","uuid":"80dc3fc7-b2cc-4212-9820-8ea0916c8688"}
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 0x1448e43bf036d2cad53898599260aedaaead341f3c6fbecd7a0e7798b019de86. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/80dc3fc7-b2cc-4212-9820-8ea0916c8688.json and https://artists.proofprofile.net/proofs/artist/80dc3fc7-b2cc-4212-9820-8ea0916c8688.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T00:33:41Z
  text: {"copyright_id":"0x1448e43bf036d2cad53898599260aedaaead341f3c6fbecd7a0e7798b019de86","name":"Tốp Ca","registered_at":"2026-06-14T17:57:07Z","symbol":"NIM0531417","token_address":"0xab50d6334a39d836ff90a8e38eb443e2634a0347","type":"artist","uuid":"80dc3fc7-b2cc-4212-9820-8ea0916c8688"}
album: Cô Hát Cháu Nghe Vol. 2
  type: MusicAlbum
  date published: 2018-08-24
album: Những Ngôi Sao Trẻ
  type: MusicAlbum
  date published: 2018-08-29
album: Trẻ Mầm Non Ca Hát Vol. 1
  type: MusicAlbum
  date published: 2018-08-29
album: Ai Cũng Yêu Chú Mèo
  type: MusicAlbum
  date published: 2018-09-06
album: Xích Đu Tiên
  type: MusicAlbum
  date published: 2018-09-10
album: Nha Trang Xuân
  type: MusicAlbum
  date published: 2024-05-08
track: Ngày Mai Rồi Mình Cũng Già

Ngày Mai Rồi Mình Cũng Già
type: MusicRecording
duration: PT4M32S
duration ms: 272026
explicit: false
by artist: Vũ Thành An
by artist: Tốp Ca
in album: Vũ Thành An-Tình Khúc Không Tên
  type: MusicAlbum
  date published: 2018-01-01
isrc code: VNA0M1935492
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T19:26:49+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xfa8fbae931315fe20d999cf235e2a9201fb8a829835abd3f0edfdb5d2fb0c6dc
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  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/VNA0M1935492
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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 957118
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa8fbae931315fe20d999cf235e2a9201fb8a829835abd3f0edfdb5d2fb0c6dc. 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/VNA0M1935492.
  date published: 2026-07-08T03:20:19Z
audio: Ngày Mai Rồi Mình Cũng Già
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 92.362
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.265
  additional property: Energy
    type: PropertyValue
    value: 0.298
  additional property: Speechiness
    type: PropertyValue
    value: 0.03
  additional property: Acousticness
    type: PropertyValue
    value: 0.894
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.006
  additional property: Liveness
    type: PropertyValue
    value: 0.142
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.089
  additional property: Loudness (dB)
    type: PropertyValue
    value: -15.383
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Minor