Hoàng Oanh
type: MusicGroup
genre: v-pop
description: thumb|Huỳnh Kim Chi Huỳnh Kim Chi, also known by the stage name Hoàng Oanh (born 6 November 1946), is a Vietnamese singer. Born in Mỹ Tho, she was popular during the 1970s before the Fall of Saigon, t
popularity: 2
followers: 158
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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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 0x57f7d5bbe7e49d2bacb9d18ad9cf9a0d8af0e2eff63f37aecc8ddf9d6ed3de42. Chain 2 (Bitcoin): anchored in block 954555 (2026-06-20T12:10:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a8802874-5cb3-4dac-bfca-1ad5704c8154.json and https://artists.proofprofile.net/proofs/artist/a8802874-5cb3-4dac-bfca-1ad5704c8154.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T12:10:20Z
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track: Bữa Tiệc Mùa Xuân
track: Liên Khúc: Chúc Xuân - Mùa Xuân Ơi

Bữa Tiệc Mùa Xuân
type: MusicRecording
duration: PT4M28S
duration ms: 268250
explicit: false
by artist: Doan Trang
by artist: Nguyên Hà
by artist: Mỹ Linh
by artist: Khổng Tú Quỳnh
by artist: Huyền Baby
by artist: Hoàng Oanh
in album: Tết Đẹp
  type: MusicAlbum
  date published: 2024-02-11
isrc code: FR2X42483707
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additional property: CopyrightStatus
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-06T06:56:49+00:00
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
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
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additional property: BitcoinTime
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x310387a920941716a14c034161731eb4ea3d3ee97502027ce4bea219392df8b4. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/FR2X42483707.
  date published: 2026-07-06T07:53:57Z
audio: Bữa Tiệc Mùa Xuân
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
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  additional property: Danceability
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  additional property: Energy
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  additional property: Speechiness
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Valence (Positivity)
    type: PropertyValue
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  additional property: Loudness (dB)
    type: PropertyValue
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  additional property: Key Name
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    value: G
  additional property: Mode Name
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    value: Major

Liên Khúc: Chúc Xuân - Mùa Xuân Ơi
type: MusicRecording
duration: PT4M57S
duration ms: 297817
explicit: false
by artist: Hoàng Oanh
by artist: Chế Nguyễn Quỳnh Châu
by artist: Chúng Huyền Thanh
by artist: Khánh Ngân
by artist: Minh Trung
by artist: Dương Mạc Anh Quân
by artist: Trần Trung
by artist: Jay Quân
in album: Gala Nhạc Việt 9: Chúc Tết Mọi Nhà
  type: MusicAlbum
  date published: 2017-01-04
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44d60d5d23d4429a2a6b348903dd16c877db49f70292700e4062c0b59d25467. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/FRX282113125.
  date published: 2026-07-30T20:09:33Z
audio: Liên Khúc: Chúc Xuân - Mùa Xuân Ơi
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  additional property: Danceability
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  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Loudness (dB)
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    value: -13.68
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major
isrc code: FRX282113125
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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  value: https://blockstream.info/api/block-height/960302
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T20:09:33+00:00
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