IBFT Sample Clauses

IBFT. ‌ The Istanbul Byzantine Fault Tolerant (IBFT) algorithm [33] stems from the original PBFT algorithm, yet it is adapted to work in a Blockchain network. It still uses the base 3-phase consensus algorithm just described, maintaining the 3f + 1 fault-tolerance property, yet with a few tweaks to work in a Blockchain setting. Additionally, instead of differentiating ”clients” and ”nodes”, as PBFT does, IBFT considers clients part of the network, and thus ”nodes”. In particular, IBFT splits nodes into a ”proposer” and mul- tiple ”validators” and, in similarity to PBFT’s single primary and multiple backups replicas, respectively. Additionally, instead of simple read/write requests, the result of the algorithm is the consensus over a block of transactions, as expected from a Blockchain system. Moreover, IBFT uses a Proof of Author- ity (PoA) [34] type of consensus, since only the validators are able to create blocks. Since its conception, it has already been improved by some other works, such as [35]. The IBFT algorithm works as follows: in each view, the validators pick one of the nodes as the proposer using a round-xxxxx algorithm. Then, the proposer proposes a new block and broadcasts it to the network with a pre-prepare message. Once the validators receive that message, they enter the pre-prepare state and broadcast a prepare message. Afterwards, when the validators receive 2f + 1 prepare messages, they broadcast the commit message, which informs that the block is ready to be entered in the Blockchain. Finally, the moment the validators receive 2f + 1 commit messages, they enter the commited state and insert the block on the Blockchain. Note that each of the validators inserts the 2f + 1 commit messages on the block header before inserting it on the chain; this works as a group signature, confirming that at least other 2f + 1 validators have validated this block. All in all, PBFT defines how consensus can be implemented in a byzantine setting, a concept that is intrinsically tied to Blockchain systems. In fact, plenty of consensus algorithms used in current Blockchain systems are based on or improve on PBFT. These include LibraBFT [36] , HotStuff [37], Redundant Byzantine Fault Tolerance (RBFT) [38] and, of course, IBFT [35]. The latter is particularly relevant as it is a consensus algorithm implemented in multiple blockchains, in particular in Hyperledger Besu, our system’s foundational Blockchain.
Sample 1
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  • SELLERS 20 The member states initially anticipate that they will provide a monetary allowance to sellers 21 under Model 2 based on the following:

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  • WSIB & LTD An Employee who is receiving benefits under the Workplace Safety and Insurance Act, or under an LTD plan, is not entitled to benefits under a school board’s sick leave and short-term disability plan for the same condition unless the employee is on a graduated return to work program then WSIB/LTD remains the first payor. For clarity, where an employee is receiving partial benefits under WSIB/LTD, they may be entitled to receive benefits under the sick leave plan, subject to the circumstances of the specific situation. During the interim period from the date of the injury/incident or illness to the date of the approval by the WSIB/LTD of the claim, the employee may access sick leave and short-term leave and disability coverage. A reconciliation of sick leave deductions made and payments provided, will be undertaken by the school board once the WSIB/LTD has adjudicated and approved the claim. In the event that the WSIB/LTD does not approve the claim, the school board shall deal with the absence consistent with the terms of the sick leave and short-term leave and disability plans.

  • GROUP COMPANIES Guangzhou Yiyan Cosmetics Co., Ltd. (广州逸妍化妆品有限公司) (Seal) By: /s/ Xxxxxxx Xxx Name: XXX Xxxxxxx (吕建华) Title: Legal Representative Shanghai Yizi Cosmetics Co., Ltd. (上海逸姿化妆品有限公司) (Seal) By: /s/ Xxxxxxx Xxx Name: XXX Xxxxxxx (吕建华) Title: Legal Representative Shanghai Yiqing Commercial and Trading Co., Ltd. (上海逸清商贸有限公司) (Seal) By: /s/ Xxxxxxx Xxx Name: XXX Xxxxxxx (吕建华) Title: Legal Representative Yatsen (Guangzhou) Culture Creative Co., Ltd. (逸仙（广州）文化创意有限公司) (Seal) By: /s/ Xxxxx Xxxx Name: XXXX Xxxxx (陈宇文) Title: Legal Representative

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