搜索结果: 1-14 共查到“密码学 Proof of Stake”相关记录14条 . 查询时间(0.061 秒)
Puncturable Signatures and Applications in Proof-of-Stake Blockchain Protocol
Puncturable Signatures PoS Blockchain
2019/8/30
Proof-of-stake (PoS) blockchain protocols are emerging as one of the most promising alternative to the energy-consuming proof-of-work protocols. However, one particularly critical threat in the PoS se...
Ouroboros Chronos: Permissionless Clock Synchronization via Proof-of-Stake
Blockchain Consensus Clock Synchronization
2019/7/22
Proof-of-stake (PoS) has been shown to be a suitable replacement—in many respects—for the expensive proof-of-work mechanism introduced by the Bitcoin protocol. Nevertheless, one common and seemingly i...
UniqueChain: A Fast, Provably Secure Proof-of-Stake Based Blockchain Protocol in the Open Setting
proof-of-stake secure initialization uniqueness
2019/5/13
We present "UniqueChain", a proof-of-stake based blockchain protocol that achieves secure initialization of newly joining parties without any additional trusted assumptions and fast messages (transact...
We provide the first formal definition of what a sidechain system is and how assets can be moved between sidechains securely. We put forth a security definition that augments the known transaction led...
Ouroboros Crypsinous: Privacy-Preserving Proof-of-Stake
blockchain consensus proof-of-stake
2018/11/29
We present Ouroboros Crypsinous, the first privacy-preserving proof-of-stake (PoS) blockchain protocol. To model its security we give a thorough treatment of private ledgers in the universal compositi...
Proof-of-stake (PoS) protocols are emerging as one of the most promising alternative to the wasteful proof-of-work (PoW) protocols for consensus in Blockchains (or distributed ledgers).
Proof-of-stake-based (in short, PoS-based) blockchains aim to overcome scalability, effi- ciency, and composability limitations of the proof-of-work paradigm, which underlies the security of several m...
Stake-Bleeding Attacks on Proof-of-Stake Blockchains
cryptographic protocols blockchain, proof of stake
2018/3/8
We describe a general attack on proof-of-stake (PoS) blockchains without checkpointing. Our attack leverages transaction fees, the ability to treat transactions "out of context," and the standard long...
iChing: A Scalable Proof-of-Stake Blockchain in the Open Setting (or, How to Mimic Nakamoto's Design via Proof-of-Stake)
cryptographic protocols non-recyclable resources
2017/7/6
Bitcoin has proven to be very successful. The Bitcoin blockchain is backed up by a large-scale network of miners via proof-of-work mechanism. Unfortunately, these miners consume huge amount of non-rec...
Ouroboros Praos: An adaptively-secure, semi-synchronous proof-of-stake protocol
blockchain consensus proof of stake
2017/6/15
We present “Ouroboros Praos”, a new proof-of-stake blockchain protocol that provides, for the first time, a robust distributed ledger that is provably secure in the semi-synchronous adversarial settin...
A Proof-of-Stake protocol for consensus on Bitcoin subchains
applications cryptocurrencies
2017/5/16
Although the transactions on the Bitcoin blockchain have the main purpose of recording currency transfers, they can also carry a few bytes of metadata. A sequence of transaction metadata forms a subch...
TwinsCoin: A Cryptocurrency via Proof-of-Work and Proof-of-Stake
cryptocurrency blockchain implementation
2017/3/9
We design and implement TwinsCoin, the first cryptocurrency based on a provably secure and scalable public blockchain design using both proof-of-work and proof-of-stake mechanisms. Different from the ...
A Provably Secure Proof-of-Stake Blockchain Protocol
incentive mechanism provides rigorous security guarantees
2016/12/9
We present a provably-secure blockchain protocol based on “proof of stake.” As far as we are aware, this is the first proof of stake blockchain protocol which provides rigorous security guarantees. Th...
Proof of Activity: Extending Bitcoin’s Proof of Work via Proof of Stake
Bitcoin Proof of Work Proof of Stake
2016/1/9
We propose a new protocol for a cryptocurrency, that builds upon the Bitcoin protocol by combining
its Proof of Work component with a Proof of Stake type of system. Our Proof of Activity (PoA) protoc...