没有合适的资源？快使用搜索试试~ 我知道了~

首页Blockchains and consensus protocols

Blockchains and consensus protocols

Blockchain

consensus

需积分: 10 9 下载量 177 浏览量更新于2023-05-23 评论 1 收藏 2MB PDF 举报

身份认证购VIP最低享 7 折!

领优惠券(最高得80元）

试读

49页

Blockchain enables new trust models ‣ Many interesting technologies – Distributed computing for consensus – Cryptography for integrity, privacy, anonymity

资源详情

资源评论

资源推荐

Blockchains and consensus

protocols

Christian Cachin

(with many others at IBM: Elli Androulaki, Angelo De Caro, Andreas Kind, Mike

Osborne, Simon Schubert, Alessandro Sorniotti, Marko Vukolic ...)

IBM Research – Zurich

September 2017

Connected markets

‣

Networks connect participants

– Customers, suppliers, banks, consumers

‣ Markets organize trades

–

Public and private markets

‣

Wealth generated by flow of assets

and services among participants

–

Physical (house, car ...) and

virtual assets (bond, patent ...)

– Services

‣ Transactions exchange assets

Ledger

‣

Ledger records all business activity as

transactions

–

Databases

‣ Every market and network defines a

ledger

‣

Ledger records asset transfers between

participants

‣ Problem — (Too) many ledgers

–

Every market has its ledger

–

Every organization has its own ledger

Multiple ledgers

‣

Every party keeps its own

ledger and state

‣ Problems, incidents, faults

‣

Diverging ledgers

Ledger

Alice

Bob

Charlie

Frank

Eve

Ledger

Dave

Blockchain provides one virtual ledger

‣

One common trusted ledger

‣ Today often implemented by a

centralized intermediary

‣

Blockchain creates one single

ledger for all parties

‣ Replicated and produced

collaboratively

‣

Trust in ledger from

–

Cryptographic protection

– Distributed validation

Alice Charlie

Frank Dave

One

Ledger

Bob

Eve

剩余48页未读，继续阅读

BlockStack，ATC‘16的一篇文章，区块链的新应用，PPT讲解

BlockStack:A Global Naming and Storage System Secured by Blockchains，课堂讲解presentation本paper。NameCoin的几个安全问题，BlockStack的设计与实现，BitCoin的使用经验。作者BlockStack的代码开源。

Designing fully distributed consensus protocols for linearmulti-agent systems with directed graphs

consensus bridging theory and practice

解释以下伪代码：Algorithm 1 One-Point RANSAC for Scale Estimation Input: {sk }K 1 and {τk }K 1 . Initialize: p = 0.99, i =: 0, NT := 105, and |I ˜s| := 0. 1: while i ≤ NT do 2: Randomly pick a scale si from {sk }K 1 . 3: Find a consensus set Ii s according to (8). 4: if |Ii s | > |I ˜s| then 5: Estimate a refined scale si according to (10). 6: Find a refined consensus set Ii s . 7: |I ˜s| := |Ii s |, I ˜s := Ii s , ˜s := si . 8: Update NT according to (3). 9: end if 10: i := i + 1; 11: end while Output: the optimal scale ˜s and the inlier set I ˜s

这是一个用于估计尺度的单点RANSAC算法，其中输入包括K个尺度值{sk}和阈值{τk}。算法初始化一些参数，包括p（置信度），i（当前迭代次数），NT（最大迭代次数）和|I~s|（当前最优的内点集合数量）。...

consensus clustering

共识聚类是一种聚类方法，它通过对多个聚类结果进行整合，得到一个更加稳定和准确的聚类结果。这种方法可以避免单个聚类算法的局限性和随机性，提高聚类结果的可靠性和鲁棒性。共识聚类可以应用于各种领域，如生物学...

distributed consensus in multi-vehicle cooperative control

分布式一致性在多车协同控制中是一个非常关键的概念。在多车协同控制中，需要通过分布式一致性来确保各个车辆之间的信息和行动是同步的。分布式一致性是指通过各个节点之间的协商和共识达成一致，使得分布式系统中...

consensus_based_auction_algothm_auction

共识式拍卖算法是一种基于区块链技术的拍卖方法。该算法利用去中心化的网络和共识机制，保证了拍卖过程的公正性和透明度。在共识式拍卖算法中，参与者可以通过在区块链上提交竞拍请求来参与拍卖。...

Answer in English, Help me prepare an answer for the IELTS speaking test in part3. The question is:How do we stop an argument from escalating into a fight?

Thirdly, both parties should try to find common ground and attempt to reach a consensus. Finally, if the argument has already escalated into a fight, both parties should temporarily end the ...

class PB_FT(): def init(self,last_sequence_id,msg_logs,request,view_id): self.last_sequence_id = last_sequence_id self.msg_logs = msg_logs self.request = request self.view_id = view_id def start_consensus(self,request): # 主节点选取 # 生成唯一标识id sequence_id = int(time.time() * 1000000000) if self.last_sequence_id != -1: while self.last_sequence_id >= sequence_id: sequence_id += 1 request.sequence_id = sequence_id self.msg_logs.req_msg = request digest, err = self.digests(request) if err != 0: print(err) return None,err self.current_stage = "PrePrepared" return PrePrepareMsg(self.view_id,sequence_id,digest,request)

这段代码看起来像是一个 Python 类，名为 PB_FT，其中包含了一个构造函数 __init__ 和一个方法 start_consensus。构造函数接受四个参数，分别是 last_sequence_id、msg_logs、request 和 view_id。start_consensus ...

chatgpt matlab consensus

在Matlab中，如果你想实现一个共识算法，有几种方法可以尝试。以下是一些可能的方法： 1. 分布式计算：使用Matlab的分布式计算工具箱，将计算任务分发给不同的节点，每个节点执行自己的计算，并通过交换信息来达成...

dna consensus string

DNA共识序列是指在多个DNA序列中，出现频率最高的碱基在每个位置上的组合。它是一种基于多序列比对的方法，用于确定DNA序列中的共性和变异性。DNA共识序列可以用于研究基因组结构和功能，以及分析DNA序列的进化和...

ORB-SLAM2全称

ORB-SLAM2结合了FAST特征检测器、BRIEF特征描述子和RANSAC（Random Sample Consensus）算法，能够在没有先验地图的情况下，通过摄像头获取的图像序列进行实时的定位和建图。它在计算效率和鲁棒性方面表现出色，被...

二代测序中SSCS校验

在二代测序中，SSCS（Single Strand Consensus Sequencing）校验是一种用于纠正测序错误的方法。在二代测序过程中，由于测序错误或者PCR扩增过程中的错误，DNA序列中可能存在一些突变或错误的碱基。SSCS校验通过对...

python实现pbft共识机制

然后定义共识函数consensus()，包括预准备阶段、准备阶段、提交阶段和确认阶段，用于实现共识过程。最后定义消息处理函数handle_message()，用于处理接收到的各种消息。 ```python class Node: ... def view_...

chen1527027

粉丝: 1
资源: 60

上传资源快速赚钱

我的内容管理收起

我的资源快来上传第一个资源

我的收益

登录查看自己的收益

我的积分登录查看自己的积分

我的C币登录后查看C币余额

我的收藏

我的下载

下载帮助

会员权益专享

Blockchains and consensus protocols

评论0

会员权益专享

最新资源

Blockchains and consensus protocols

评论0

BlockStack，ATC‘16的一篇文章，区块链的新应用，PPT讲解

Designing fully distributed consensus protocols for linearmulti-agent systems with directed graphs

consensus bridging theory and practice

consensus based auction 算法

kalman consensus 代码

DEEP GRAPH MATCHING CONSENSUS

consensus baes bundle

写一段利用pylidc中consensus函数提取mask的代码

多智能体强化学习推荐书籍

consensus clustering

distributed consensus in multi-vehicle cooperative control

consensus_based_auction_algothm_auction

Answer in English, Help me prepare an answer for the IELTS speaking test in part3. The question is:How do we stop an argument from escalating into a fight?

chatgpt matlab consensus

dna consensus string

ORB-SLAM2全称

二代测序中SSCS校验

python实现pbft共识机制

会员权益专享

最新资源