You should check out this wiki: https://en.bitcoin.it/wiki/Thin_Client_Security which describes some of the differences between full nodes and thin clients. Thin clients store the blockchain metadata (block headers) and core nodes store the actual blocks. For a bitcoin core fullnode there is now also the option to run in pruned mode, which saves a lot of space.
On 07/12/2017 08:51 AM, Yubin Ruan wrote: > Many thanks! > > Then is it true to say, even though a regular node, which is not full > node, also have to store full metadata of the whole block chain > history? I mean, even if they don't have to store all the transaction > log, they have to store all the block metadata (which contain the > roots of Merkle tree) to determine determine whether a transaction is > valid. Is that true? > > Thanks, > Yubin _______________________________________________ bitcoin-discuss mailing list [email protected] https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-discuss
