Kraken 创建于2011年，位于旧金山，是世界上最大，最古老的比特币交易所之一，也是欧元交易量最大的虚拟货币交易所，它支持美元，英镑，日元等多种法币。该平台服务优质，费用低廉，拥有严格的安全标准和多样化的资金选择，旨在为该领域的人们提供快速且安全的投资服务。Kraken 致力于使加密货币可用和可访问，并使各行各业的人们能够独立投资加密货币，它一直被评为在线购买和出售加密货币的最佳场所之一。

Optimism

Optimism is the first Ethereum L2 to develop an Optimistic Rollup solution compatible with the Ethereum Virtual Machine (EVM). Parallel to Ethereum, Optimism is able to process transactions at scale while inheriting the security of Ethereum.
Optimistic Rollup gets its name from the way transactions are processed. By default, transactions are optimistically assumed to be accurate and no calculations are performed. It relies on anti-fraud mechanisms to ensure the legitimacy of transactions. Validators (anyone running an Optimism "full node") are able to challenge the validity of transaction proposals submitted by sequencers, which Rollup will then check by performing computations on transactions on Ethereum. Transaction proposals can be challenged during the challenge period, which Optimism sets to 1 week, before being finalized and submitted to the Ethereum mainnet.
If the proposal turns out to be fraudulent, the validators are rewarded and the sequencer is punished. Rewards are taken from the bound ERC-20 token pool that the sequencer needs to bind. In the case of Optimism, the required token is ETH. This creates an incentive mechanism where validators are incentivized to catch bad actors and sequencers are incentivized to only submit accurate transaction proposals. Fraudulent proposals are removed and correct proposals are finalized. The transaction itself is not reverted, only the fraudulent proposal result of the transaction is removed.
Optimism has 4 main benefits: EVM equivalence, data safety, speed, and cost.
Optimism is one of the most EVM-compatible chains, and its focus is to go a step further and be EVM-equivalent. Optimism is able to support any Ethereum application using its Optimistic Virtual Machine (OVM), which is an EVM-compatible virtual machine. Developers are able to deploy any Ethereum-based dApp onto Optimism with few architectural changes. This allows decentralized applications (dApps) built on Ethereum to be seamlessly integrated on Optimism.
Unlike sidechains like Ronin (which Axie infinity employs) which have their own security while running independently, rollups like Optimism get their security from the Ethereum mainnet. Transactions are processed on Optimism, but the transaction's data is written and stored on Ethereum. This allows Optimism to inherit the security of Ethereum while maintaining scalability.
Computation is the slow and expensive part of using Ethereum. By not counting transactions by default, Optimism is able to achieve 10-100x scalability improvements depending on the nature of the transactions. Optimism features near-instant trade finality, enabling users to check the results of their trades almost instantly. Optimism transactions are also cheap, at a fraction of the cost of Ethereum transactions. Currently, Optimism&rsquo;s base transfer fee is $1.66, while Ethereum&rsquo;s base transfer fee is $8.77 (see real-time fees here). The Optimism team estimates that they have collectively saved over $335 million in gas fees across transactions processed on the network.

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Grayscale and VanEck spark ETF optimism with new SEC filings

XRP ETF optimism grows in the wake of Bitcoin ETF success

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Andreessen Horowitz

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Gist

Will Meister is the Vice President of Engineering at Optimism, with a strong background in software engineering, finance, Ethereum and Bitcoin blockchain, especially Layer2 protocol development (scaling), smart contract development, design and implementation of incentive structures, and Dex and other financial instruments/payment channels, etc. He has programming and database experience in Java, Python, Go, JavaScript, Solidity, C#, Android, Ruby, HTML, Visual Basic, and more.

Will Meister

Jon Maurelian, John Mardlin, is currently a security engineer at Optimism and a founding member of ConsenSys Diligence. He is a regular contributor and spokesperson for the mailing list. Previously, he worked at Coinbase and founded CoinForest.

Jon Maurelian

Mark Tyneway is a Software Development Engineer at Optimism, formerly a developer at Purse.io, and enjoys building applications that solve real problems. He is good at programming in Go, Python, Node, Bash, as well as Docker, Kubernetes, cloud development; React, Redux, Webpack; Bitcoin script, etc. Constantly use scientific methods, update self-belief, and be an empathetic communicator.

Mark Tyneway

Jinglan Wang is currently a software development engineer at Plasma Group, helping build Ethereum&#39;s Plasma scaling technology. Previously, he worked in Handshake and IDEO. Her first foray into the crypto industry was the MIT Bitcoin Club, and soon after, she joined Nasdaq as a blockchain product manager, and later co-founded Eximchain, which raised $20 million.

Jinglan Wang

Josh Stein is COO of Optimism and was co-founder and CEO of Harbor, leading Harbor to tokenize private securities and address the compliance challenges of trading private securities on the blockchain. Prior to that, he served as General Counsel and Chief Compliance Officer for Zenefits and OptumRx, a subsidiary of UnitedHealth Group, as well as Assistant U.S. Attorney, Federal Judicial Clerk, and U.S. Army Intelligence Officer.

	Rank	Source	Price	24h	Volume(24H)	Trading Percent	Updated
1	Binance	1	Binance	OP/USDT	1.7050	0.59%	$11,746,089.79	6.9956%	2024-10-18 16:21:12
2	Bitget	2	Bitget	OP/USDT	1.7040	0.59%	$8,501,380.53	5.0632%	2024-10-18 16:20:14
3	OKX	3	OKX	OP/USDT	1.7034	0.47%	$3,384,645.02	2.0158%	2024-10-18 16:21:33
4	CoinW	4	CoinW	OP/USDT	1.7043	0.6%	$1,453,608.6	0.8657%	2024-10-18 16:20:50
5	Gate.io	5	Gate.io	OP/USDT	1.7010	0.35%	$496,695.77	0.2958%	2024-10-18 16:21:11
6	Binance	6	Binance	OP/USDC	1.7050	0.53%	$346,903.82	0.2066%	2024-10-18 16:20:58
7	BingX	7	BingX	OP/USDT	1.7050	0.65%	$318,740.17	0.1898%	2024-10-18 16:21:19
8	MEXC	8	MEXC	OP/USDT	1.7020	0.47%	$314,376.81	0.1872%	2024-10-18 16:20:44
9	Bitget	9	Bitget	OP/USDC	1.7050	0.59%	$281,436.9	0.1676%	2024-10-18 16:20:23
10	Binance	10	Binance	OP/FDUSD	1.6950	-0.12%	$277,487.96	0.1653%	2024-10-18 16:17:57
11	Binance	11	Binance	OP/ETH	0.00064500	-0.46%	$244,053.55	0.1454%	2024-10-18 16:19:39
12	Kraken	12	Kraken	OP/USD	$1.69	-0.38%	$160,841.23	0.0958%	2024-10-18 16:21:20

	Volume(24H)	Trading Percent
OKX	OKX	$3,518,756.84	4.3868%	Visit
Binance	Binance	$12,853,170.75	16.0237%	Visit
Kraken	Kraken	$225,726.94	0.2814%	Visit
Gate.io	Gate.io	$500,977.7	0.6246%	Visit
KuCoin	KuCoin	$11,232.54	0.0140%	Visit
Crypto.com Exchange	Crypto.com Exchange	$249,681.42	0.3113%	Visit
Bitget	Bitget	$8,782,817.43	10.9493%	Visit
MEXC	MEXC	$340,613.69	0.4246%	Visit
BingX	BingX	$318,740.17	0.3974%	Visit
CoinW	CoinW	$1,453,608.6	1.8122%	Visit
BitMart	BitMart	$520,660.07	0.6491%	Visit

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