Láu Cá
type: MusicGroup
genre: vietnamese hip hop
genre: vietnam indie
popularity: 10
followers: 631
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8f2932566f933e0465e5f00d9863c125816cdbfc7bc6251e2f4a97ed72d2741d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953909
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953909
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/110b7f4f-2d26-4236-a8e7-195fff9e0ee4.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/110b7f4f-2d26-4236-a8e7-195fff9e0ee4.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/110b7f4f-2d26-4236-a8e7-195fff9e0ee4
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T07:53:13Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8f2932566f933e0465e5f00d9863c125816cdbfc7bc6251e2f4a97ed72d2741d","name":"Láu Cá","registered_at":"2026-06-15T19:32:35Z","symbol":"NIM0809580","token_address":"0xd855b450bbe11335a089ee3b0ad3059c309ac6bd","type":"artist","uuid":"110b7f4f-2d26-4236-a8e7-195fff9e0ee4"}
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
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f2932566f933e0465e5f00d9863c125816cdbfc7bc6251e2f4a97ed72d2741d. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/110b7f4f-2d26-4236-a8e7-195fff9e0ee4.json and https://artists.proofprofile.net/proofs/artist/110b7f4f-2d26-4236-a8e7-195fff9e0ee4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T07:53:13Z
  text: {"copyright_id":"0x8f2932566f933e0465e5f00d9863c125816cdbfc7bc6251e2f4a97ed72d2741d","name":"Láu Cá","registered_at":"2026-06-15T19:32:35Z","symbol":"NIM0809580","token_address":"0xd855b450bbe11335a089ee3b0ad3059c309ac6bd","type":"artist","uuid":"110b7f4f-2d26-4236-a8e7-195fff9e0ee4"}
album: VÃ-ÒN
  type: MusicAlbum
  date published: 2022-05-20
album: lẩu đái
  type: MusicAlbum
  date published: 2023-02-24
album: Chuyện Chàng Cô Đơn
  type: MusicAlbum
  date published: 2023-05-13
album: NEO
  type: MusicAlbum
  date published: 2023-08-23
album: ÔNG CHÚ
  type: MusicAlbum
  date published: 2023-12-23
album: SAO EM BẢO LÀ VUI NHƯNG LẠI KHÔNG VUI NHƯ ANH TƯỞNG
  type: MusicAlbum
  date published: 2024-06-07
album: Hoàng Tử Sương
  type: MusicAlbum
  date published: 2024-08-09
album: AUTO-SAVE
  type: MusicAlbum
  date published: 2024-11-14
album: JRPG
  type: MusicAlbum
  date published: 2025-05-17