4 ms·

Yes, they do. And yes its quite large! Over 10 GB.

• Jach 12y ago
  No they don't. Mining software that connects to pools is independent of having a blockchain copy. There are also several bitcoin wallet implementations that don't require a full copy of the blockchain.
  • maaku 12y ago
    Strictly speaking, that is hashing software. Mining software is what runs on the pool, and it absolutely must download and verify the blockchain.
    • deleted 12y ago
      [deleted]
• andrewmunsell 12y ago
  If you use a client such as Electrum, it uses a server based model to index the Blockchain. The advantage of this is primarily "instant" start up time of the client. https://electrum.org/ https://electrum.org/
• ars 12y ago
  Over 20GB actually, and growing by about 2GB per month.