[sova]

"RaiBlocks achieves consensus via a balance-weighted vote on conflicting transactions. This consensus system provides quicker, more deterministic transactions while still maintaining a strong, decentralized system. RaiBlocks continues this development and has positioned itself as one of the highest performing cryptocurrencies."

Which I would follow with more from the paper:

"H. Proof of Work All four transaction types have a work field that must be correctly populated. The work field allows the transaction creator to compute a nonce such that the hash of the nonce concatenated with the previous field in receive/send/change transactions or the account field in an open transaction is below a certain threshold value. Unlike Bitcoin, the PoW in RaiBlocks is simply used as an anti-spam tool, similar to Hashcash, and can be computed on the order of seconds [9]."

"B. Transaction Flooding A malicious entity could send many unnecessary but valid transactions between accounts under its control in an attempt to saturate the network. With no transaction fees they are able to continue this attack indefinitely. However, the PoW required for each transaction limits the transaction rate the malicious entity could generate without significantly investing in computational resources. Even under such an attack in an attempt to inflate the ledger, nodes that are not full historical nodes are able to prune old transactions from their chain; this clamps the storage usage from this type of attack for almost all users."