Project MainStream
type: MusicGroup
genre: tango
popularity: 2
followers: 72
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9789bef05e3466f934d09a859816248d9bd72b4d4795b6385ec8382d883b6320
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954689
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954689
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e3083131-9084-47fd-baec-0525fb445e9c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e3083131-9084-47fd-baec-0525fb445e9c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e3083131-9084-47fd-baec-0525fb445e9c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T10:35:31Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x9789bef05e3466f934d09a859816248d9bd72b4d4795b6385ec8382d883b6320","name":"Project MainStream","registered_at":"2026-06-21T07:30:04Z","symbol":"NIM1862100","token_address":"0xd0347b7b7c3c5d5023efa9ccf19519ef6c34d8ec","type":"artist","uuid":"e3083131-9084-47fd-baec-0525fb445e9c"}
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 0x9789bef05e3466f934d09a859816248d9bd72b4d4795b6385ec8382d883b6320. Chain 2 (Bitcoin): anchored in block 954689 (2026-06-21T10:35:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e3083131-9084-47fd-baec-0525fb445e9c.json and https://artists.proofprofile.net/proofs/artist/e3083131-9084-47fd-baec-0525fb445e9c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T10:35:31Z
  text: {"copyright_id":"0x9789bef05e3466f934d09a859816248d9bd72b4d4795b6385ec8382d883b6320","name":"Project MainStream","registered_at":"2026-06-21T07:30:04Z","symbol":"NIM1862100","token_address":"0xd0347b7b7c3c5d5023efa9ccf19519ef6c34d8ec","type":"artist","uuid":"e3083131-9084-47fd-baec-0525fb445e9c"}
album: Libertango
  type: MusicAlbum
  date published: 2017-09-29
album: Libertango
  type: MusicAlbum
  date published: 2017-09-29
album: Chestnuts Roasting / Silent Night
  type: MusicAlbum
  date published: 2017-12-19
album: Yesterday
  type: MusicAlbum
  date published: 2019-04-04
album: Danny Boy
  type: MusicAlbum
  date published: 2020-05-13
album: Romanza Quartiere
  type: MusicAlbum
  date published: 2020-08-04
album: Married Life (From "Up")
  type: MusicAlbum
  date published: 2020-09-26
album: MusicAlbum
  name: Super Mario Medley: Super Mario Theme / Super Star Theme / Star World Theme / Bowser's Theme / Castle Theme / Boo's Castle Theme / Underwater Theme / Yoshi's Island Theme / Rosalina's' Theme / Hurry Up Theme (30th Anniversary Celebration)
  date published: 2021-02-01
album: Positions Violin (Remix)
  type: MusicAlbum
  date published: 2021-02-22