K2
type: MusicGroup
genre: brazilian rock
description: K2, also known as Mount Godwin-Austen, at above sea level, is the second-highest mountain on Earth, after Mount Everest at . It lies in the Karakoram range, partially in the Gilgit-Baltistan region o
popularity: 2
followers: 427
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x16f581fe2134b92bd7ee6c3c67fdd9f8e1eddc783afeb6e048a6b2b33c1f6d14
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6f6eefb2-16be-4172-b0b6-5a17ac17ad00.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6f6eefb2-16be-4172-b0b6-5a17ac17ad00.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/6f6eefb2-16be-4172-b0b6-5a17ac17ad00
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
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 0x16f581fe2134b92bd7ee6c3c67fdd9f8e1eddc783afeb6e048a6b2b33c1f6d14. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6f6eefb2-16be-4172-b0b6-5a17ac17ad00.json and https://artists.proofprofile.net/proofs/artist/6f6eefb2-16be-4172-b0b6-5a17ac17ad00.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
album: Locomotiva
  type: MusicAlbum
  date published: 2003-12-20
album: K2
  type: MusicAlbum
  date published: 2009-04-04
album: Brasileiro (Alma Grande)
  type: MusicAlbum
  date published: 2014-07-19
album: Tem Que Ter Amor (Mas Também Tem Que Ter Luta)
  type: MusicAlbum
  date published: 2022-01-31