本文章不定期更新, 如果有錯誤請跟我說,謝謝
ICO 首次公開募股的行為 只是ICO發行的是虛擬貨幣、IPO是發行股票
ICO是什麼意思?如何參加ICO?買虛擬貨幣ICO有風險嗎?
OTC場外交易
返現比例
賣家買幣(稱為 C2C)
入金 法幣轉 USDT
出金 USDT 轉法幣
法幣 = 美金 台幣 人民幣
數字貨幣 例如 數位人民幣
穩定幣 例如USDT 泰達幣
幣幣交易 例如USDT買BTC
加密kline 綠漲 紅跌 ( 跟台股相反 )
現貨賬戶:用來充幣(數字貨幣充值),提幣(將幣提現到其他地方),以及用來做幣幣交易(兩種數字貨幣之間的交易)
槓桿賬戶:用來做槓桿
合約賬戶:用來做合約
法幣賬戶:人民幣出入金用這個賬戶,比如你用人民幣購買數字貨幣的話,購買到的數字貨幣就直接衝入到這個賬戶裡面了
不同賬戶的資金功能是不一樣的,你無法用法幣賬戶的幣去做幣幣交易,所以如果你的幣在法幣賬戶,要想做幣幣交易,那該怎麼辦呢?
就需要你透過資金劃轉功能將你的幣從法幣賬戶劃轉到幣幣賬戶去。
所以一般來說數字貨幣裡面的各個賬戶,如果想在裡面之間進行互相轉賬的話,就需要用到資金劃轉功能了。在不同賬戶之間進行資金劃轉是免費的。
錢包出金,就是把幣安裡的錢轉到別的交易所(假設是max交易所 USDT 交易)
spot 現貨交易
MetaMask 小狐狸錢包教學:如何使用、下載、從幣安轉帳進去
gas limit 一個區塊所能包進去的交易數量
會自動調節
比特幣和乙太幣, 每1000個區塊後, 會調整共識難度 ( 會導致挖礦難度也提高 )
硬分岔:改變共識演算法(且所有節點都要更新版本, 更新此規則跟著改。ps:沒更新版本的節點就會不能使用
例如經典乙太幣, 當年交易所被駭客, 所以就修改共識演算法, 硬分岔成兩條, 新的分岔改為ETH(Ethereum), 原本舊的鏈就改為(Ethereum Classic, ETC)
https://www.gate.io/zh-tw/blog_detail/600/thedao-theft-the-story-of-the-ethereum-hard-fork-explained
軟分岔:些微改變
應該是增加一個新flag變數, 某些節點有更新, 看得懂新的flag在幹嘛
沒更新的舊節點, 因為此新flag不在共識演算法檢查範圍內, 就不用改
新舊節點都兼容的一個改版, 大體上是這樣意思
比特幣採用的hash演算法是 sha256(SHA-2)
比較新的應該都是用 SHA-3
如果比特幣使用的sha256演算法有碰撞可能
可以硬分岔, 改變共識演算法規則, 就可以讓鏈更加穩定
區塊鍊是用hash來識別唯一性
如果同一個區塊, 但hash值不同代表有可能被竄改
區塊鍊,實際使用Merkle Tree(哈希樹)
要驗證此Root hash是否正確
就把每個區塊的資料, 兩兩hans起來, 最後就得到Root hash
優點快速驗證此hash (只需少量的關鍵hans即可驗證全部資料的正確性)
區塊內容
欄位 | 內容 | 數值 |
---|---|---|
Block Height | 區塊鍊高度, 流水號 從0開始 (0等於創世區塊) | 16738041 |
Status | 狀態 1:成功 | Finalized |
Timestamp | 創建區塊時間 | Mar-02-2023 02:53:11 AM +UTC |
Transactions | 區塊內的交易筆數 | 169 |
Block Reward | 區塊鍊挖礦獎勵 | 0.0662246242078339 ETH |
Difficulty | 挖礦難度 | 58,750,003,716,598,352,816,469 |
Gas Used | 此區塊實際使用的瓦斯數量 (不可超過 gas limit) | 29,930,729(99.77%) |
Gas Limit | 此區塊瓦斯使用上限(代表能包含的交易總數) | 30,000,000 |
Extra Data | 智能合約使用的區段 | Text |
交易內容
欄位 | 內容 | 數值 |
---|---|---|
From | 交易來源地址 | 0x95222290DD7278Aa3Ddd389Cc1E1d165CC4BAfe5 |
To | 交易目的地址 | 0x388C818CA8B9251b393131C08a736A67ccB19297 |
Value | 交易金額 | 0.042089734807192261 ETH |
Transaction Fee | 手續費 | 0.000520838869624207 ETH |
Gas Price | 價格,設定越高, 礦工越會來挖你這筆交易,就越快成交 | 23.555645137 Gwei (0.000000023555645137 ETH) |
Gas Used | 此交易實際使用的瓦斯數量 (不可超過 gas limit) | 22,111 (73.7%) |
Gas Limit | 瓦斯使用上限 ( Gas Used超過此數值就會交易失敗 ) | 30,000 |
Gas Fees | Text | Text |
0xf4a447c7793f646f719e0761d6164c57bbe56fafe8f868a0643d0bb725551850地址的資料
試玩 Blockchain Demo:瞭解區塊鏈如何防止攻擊、挖礦電腦都在算什麼
挖礦=猜數字
hash猜到0就有挖礦獎勵 (hash出來的結果, 從左邊看, 一開始設定滿足0000就算挖礦成功, 後面會慢慢演變成越多的0000000)
越多0代表挖礦難度越高
所以bitcoin調整難易度就是
藉由改變block的nonce的數值
導致hash的最左側數值變成0 (圖中範例目前是要滿足4個0)
就代表挖礦成功
當挖礦成功後 廣播給所有節點
並且獲得 coinBase + 交易的手續費 的獎勵
最後並將結果廣播給所有節點
ps: 我看教學網站的hash左側是一堆0, 但實務上看etherscan, 貌似不是這樣, 挖礦的細節還要去看實務上的改變
比特幣(bitcoin是用hash的前導0的數量, 來看是否挖到礦)
乙太坊是用其他方式來判斷是否挖到礦 todo:待查方法
一般標準交易的 Gas Limit 為21000
【新手教學】到底什麼是Gas、Gas Price、Gas Limit
私鑰(2的256次方)(亂數產生) =>使用SPEC256 =>公鑰 =>Hash一次 => 錢包地址
幣種 | 交易確認次數(區塊鏈高度) |
---|---|
比特幣 | 至少6次 |
以太幣 | 30次 |
當挖礦時候,每個節點雖然會儲存區塊鏈,但每個節點不一定會立即同步資訊(例如歐洲跟中國)
當兩個節點長度不一樣時,以較長的為主(短的會有自動銷毀機制)
節點設計要追最長的鏈
交易所錢包,功能上和熱錢包類似,只是比熱錢包更加便於交易,但在安全性上定義不同,
交易所錢包就像是交易所提供的託管帳戶,因此用戶並不擁有此錢包中的加密貨幣私鑰
輕錢包
測試鏈
rinkeby
OPCODE 基本加減乘除指令
新手指南丨Token 是什麼?它和 Coin 有什麼區別
Ethereum ERC20 Token Standard 以太坊代幣標準介紹
快速鑄造自己的智能合約幣(Token)
節點兩大種類
Parity 和 Geth
區塊鏈兩大應用
Defi NFT
將小狐狸錢包的地址貼到 水龍頭網站上, 即可領取免費代幣
ETH發代幣水龍頭
goerli 水龍頭
sepolia 水龍頭
rinkeby 很多時候offline
ephemery 水龍頭
通常都是把自己的錢包地址貼到水龍頭輸入框內, 在按下送出即可獲得免費代幣(通常一天領一次)
登入後將錢包地址貼在聊天區域內
[Kovan testnet][https://gitter.im/kovan-testnet/faucet]
ETH水龍頭url彙整區
ethscan
faucets 水龍頭s
mainnet
AAVE
https://staging.aave.com/faucet/
BTC發代幣水龍頭
比特幣官網測試錢包下載
比特币测试网钱包教學
比特币测试网钱包
bitcoinfaucet水龍頭
bitcoin測試鏈
bitcoin主鏈1
bitcoin主鏈2
golang 实现区块链(Bitcoin)系列1 - 基本原型
顧名思義,雙花攻擊 (Double Spend Attack) 是一筆錢 花兩次 的意思。雙花攻擊並不會產生新的幣,而是比較像是把花出去的錢拿回來,普通使用者正常使用區塊鏈網路時,基本上不會遇到被動雙花的情境,但對於攻擊者來說有很多攻擊是可以實現的,目前有常見的幾種手法能夠引發雙花攻擊:
51% 算力攻擊(51% Attack)
最常見的雙花攻擊模式,攻擊者佔有超過全網 50% 的算力,在攻擊者控制算力的這段時間,他可以創造一條長於公鏈的側鏈,再根據 最長鏈共識 使得公鏈中的交易回滾,最終實現雙花。
51% 算力攻擊實際範例
假設區域
歐洲算力49% 亞洲算力51%
我在歐洲發起一個轉帳交易, 轉500ETH給某玩家, 然後拿到等值的法幣或物品
然後同時在亞洲拼命的產生區塊, 區塊數目高於歐洲後, 亞洲的區塊會取代歐洲(因為長度最長的會取代短的 )
所以導致歐洲這筆500ETH轉帳就會被回朔, 但我實際上拿到等值的物品
不過現實中比特幣、以太坊都沒被此攻擊過,因為成本太高了,比特幣的 PoW 共識,攻擊者想要在六次確認的時間內追上最長鏈,幾乎不太可能!
種族攻擊(Race attack)
這種攻擊主要通過控制礦工費(gas),來實現雙花攻擊。攻擊者會同時發送兩筆交易,一筆交易發給自己 (增加更高的礦工費),另一筆發給商家。
由於發送給自己的交易中含有較高的手續費,因此有較高機率被優先打包進最長鏈中,而商家看到攻擊者發送的交易,這時可能已被驗證,故提供商品給攻擊者。
芬尼攻擊(Finney attack)
主要通過控制交易過程中區塊確認的時間來實現雙花攻擊,攻擊對象是一個願意接受未確認交易的商家。
攻擊者用第一筆交易挖掘了一個區塊,但將其隱藏,接著用同一個比特幣發起第二筆交易給願意接受未確認交易的商家,再來攻擊者就把他自己之前挖到的區塊廣播出去,這時候發給自己的交易就先於發給商家的交易。對於攻擊者來說,通過控制區塊的廣播時間,就實現了同一筆 token 的雙花,為了降低這種風險,賣方應在放行貨物前等待至少六個區塊的確認。
名稱 | 詳細名稱 | 最小單位 | 出塊速度 | 交易確認數 | 交易完成時間 |
---|---|---|---|---|---|
BTC | bitcoin | 1 BTC = 0.00000001 (聰)Sat | 10分鐘 | 6個 | 1小時內 |
ETH | Ethereum | 1 Ether = 10 的 18 次方 GWei | 15秒內 | 12個 | 3分鐘約 |
USDT | Tether | 1 Ether = 10 的 18 次方 GWei | 15秒內 | 12個 | 5分鐘約 |
BTC 公開金鑰經過 SHA-256 雜湊運算後,再通過 RIPEMD-160 雜湊運算而得,其長度固定為 160 個位元(bits),通常會利用 Base58 將之編碼成一串由英文字母和數字所組成的字串,以方便顯示或散佈,其特徵是皆以「1」或者「3」開頭
EIP = Ethereum Improvement Proposals = 社群用來改善Ethereum的提案,提案成功就會納入改版的製程
協議名稱 | 鏈名稱 | 原生幣 | 出塊速度 | 共識演算法 | 交易所手續費 | 鏈上實際手續費 | |
---|---|---|---|---|---|---|---|
ERC20 | Ethereum鏈(以太鏈) | ETH | Text | 10~20USDT | 0.0007 ~ 0.008 eth 不等 | ||
ERC721 | Ethereum鏈(以太鏈) | ETH | Text | ||||
TRC20 | 泰達幣 | 3秒一個 | 3秒一個 | 1 | 2 |
區塊鏈:以太坊區塊鏈
轉帳手續費(以幣安為例):10 USDT (各交易所不一樣)
最小轉帳數量(以幣安為例):50 USDT (各交易所不一樣)
到帳時間:普通、易堵塞,幾分鐘到幾十分鐘
安全性:普通
轉帳帳號地址開頭:0x
hans 好像搞錯 usdt是泰達幣
以太坊交易量限制為每秒 15 筆。由於以太坊的受歡迎程度遠遠超過每秒 15 筆交易,這就導致以太坊的交易擁堵,以及 Gas 費的高昂。最終,這也讓許多用戶望而卻步,並限制以太坊目前能夠處理的應用程式類型。所以有三種方式可以解決上述兩個問題
側鏈是使用雙向錨定關聯於其父鏈(主鏈)的單獨區塊鏈。換句話說,你可以將資產移至側鏈,並再移回父鏈。(就是將主鏈資產在主鏈和側鏈間來回移動)
雙向錨定使得可以在父鏈和子鏈之間以預定的匯率進行資產互換。原始區塊鏈通常成為「主鏈」,其他所有外加的區塊鏈都稱為「側鏈」。區塊鏈平台 Ardor 將其側鏈稱為「子鏈」。
父鏈上的用戶首先必須發送其代幣到一個輸出地址,這些代幣會被鎖定,因此用戶無法在其他地方消費它們。在交易完成之後,會通過跨鏈進行確認,然後等待一段時間,以提高安全性。
在等待期過後,側鏈上會釋放等量的代幣,允許用戶獲取並在此處進行消費。當將資產從側鏈移回主鏈,流程剛好相反。
如何取得 polygon 鏈上的 ETH? 最省手續費方法教學
發佈時的已部署的合約
0xbb6fB7B6Ca2A864776d4eaD564B7Ba98c1AaBABf
状态 0x1 交易已打包且执行成功
交易哈希 0x16f80ac1066e84eeeacf826ba81680b819a5ad13fb8b107533824cf51818cbb8
区块哈希 0xcb119e25539f71e5d1e77ef5f8de7018dc0a09a44aca16225c7b629c69fbcedc
区块号 5388598
合约地址 0xbb6fb7b6ca2a864776d4ead564b7ba98c1aababf
from 0x8de6b6aa4cda66f94fe7f1b7d252a9d583a23239
to CatToken.(constructor)
gas 2585081 gas
交易成本 2563568 gas
输入 0x608...80033
解码输入 {}
解码输出 -
日志 [
{
"from": "0xbb6fb7b6ca2a864776d4ead564b7ba98c1aababf",
"topic": "0xc7f505b2f371ae2175ee4913f4499e1f2633a7b5936321eed1cdaeb6115181d2",
"event": "Initialized",
"args": {
"0": "18446744073709551615",
"version": "18446744073709551615"
}
}
]
ABI
[
{
"inputs": [],
"stateMutability": "nonpayable",
"type": "constructor"
},
{
"inputs": [],
"name": "ECDSAInvalidSignature",
"type": "error"
},
{
"inputs": [
{
"internalType": "uint256",
"name": "length",
"type": "uint256"
}
],
"name": "ECDSAInvalidSignatureLength",
"type": "error"
},
{
"inputs": [
{
"internalType": "bytes32",
"name": "s",
"type": "bytes32"
}
],
"name": "ECDSAInvalidSignatureS",
"type": "error"
},
{
"inputs": [
{
"internalType": "address",
"name": "spender",
"type": "address"
},
{
"internalType": "uint256",
"name": "allowance",
"type": "uint256"
},
{
"internalType": "uint256",
"name": "needed",
"type": "uint256"
}
],
"name": "ERC20InsufficientAllowance",
"type": "error"
},
{
"inputs": [
{
"internalType": "address",
"name": "sender",
"type": "address"
},
{
"internalType": "uint256",
"name": "balance",
"type": "uint256"
},
{
"internalType": "uint256",
"name": "needed",
"type": "uint256"
}
],
"name": "ERC20InsufficientBalance",
"type": "error"
},
{
"inputs": [
{
"internalType": "address",
"name": "approver",
"type": "address"
}
],
"name": "ERC20InvalidApprover",
"type": "error"
},
{
"inputs": [
{
"internalType": "address",
"name": "receiver",
"type": "address"
}
],
"name": "ERC20InvalidReceiver",
"type": "error"
},
{
"inputs": [
{
"internalType": "address",
"name": "sender",
"type": "address"
}
],
"name": "ERC20InvalidSender",
"type": "error"
},
{
"inputs": [
{
"internalType": "address",
"name": "spender",
"type": "address"
}
],
"name": "ERC20InvalidSpender",
"type": "error"
},
{
"inputs": [
{
"internalType": "uint256",
"name": "deadline",
"type": "uint256"
}
],
"name": "ERC2612ExpiredSignature",
"type": "error"
},
{
"inputs": [
{
"internalType": "address",
"name": "signer",
"type": "address"
},
{
"internalType": "address",
"name": "owner",
"type": "address"
}
],
"name": "ERC2612InvalidSigner",
"type": "error"
},
{
"inputs": [],
"name": "EnforcedPause",
"type": "error"
},
{
"inputs": [],
"name": "ExpectedPause",
"type": "error"
},
{
"inputs": [
{
"internalType": "address",
"name": "account",
"type": "address"
},
{
"internalType": "uint256",
"name": "currentNonce",
"type": "uint256"
}
],
"name": "InvalidAccountNonce",
"type": "error"
},
{
"inputs": [],
"name": "InvalidInitialization",
"type": "error"
},
{
"inputs": [],
"name": "NotInitializing",
"type": "error"
},
{
"inputs": [
{
"internalType": "address",
"name": "owner",
"type": "address"
}
],
"name": "OwnableInvalidOwner",
"type": "error"
},
{
"inputs": [
{
"internalType": "address",
"name": "account",
"type": "address"
}
],
"name": "OwnableUnauthorizedAccount",
"type": "error"
},
{
"anonymous": false,
"inputs": [
{
"indexed": true,
"internalType": "address",
"name": "owner",
"type": "address"
},
{
"indexed": true,
"internalType": "address",
"name": "spender",
"type": "address"
},
{
"indexed": false,
"internalType": "uint256",
"name": "value",
"type": "uint256"
}
],
"name": "Approval",
"type": "event"
},
{
"anonymous": false,
"inputs": [],
"name": "EIP712DomainChanged",
"type": "event"
},
{
"anonymous": false,
"inputs": [
{
"indexed": false,
"internalType": "uint64",
"name": "version",
"type": "uint64"
}
],
"name": "Initialized",
"type": "event"
},
{
"anonymous": false,
"inputs": [
{
"indexed": true,
"internalType": "address",
"name": "previousOwner",
"type": "address"
},
{
"indexed": true,
"internalType": "address",
"name": "newOwner",
"type": "address"
}
],
"name": "OwnershipTransferred",
"type": "event"
},
{
"anonymous": false,
"inputs": [
{
"indexed": false,
"internalType": "address",
"name": "account",
"type": "address"
}
],
"name": "Paused",
"type": "event"
},
{
"anonymous": false,
"inputs": [
{
"indexed": true,
"internalType": "address",
"name": "from",
"type": "address"
},
{
"indexed": true,
"internalType": "address",
"name": "to",
"type": "address"
},
{
"indexed": false,
"internalType": "uint256",
"name": "value",
"type": "uint256"
}
],
"name": "Transfer",
"type": "event"
},
{
"anonymous": false,
"inputs": [
{
"indexed": false,
"internalType": "address",
"name": "account",
"type": "address"
}
],
"name": "Unpaused",
"type": "event"
},
{
"inputs": [],
"name": "DOMAIN_SEPARATOR",
"outputs": [
{
"internalType": "bytes32",
"name": "",
"type": "bytes32"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [
{
"internalType": "address",
"name": "owner",
"type": "address"
},
{
"internalType": "address",
"name": "spender",
"type": "address"
}
],
"name": "allowance",
"outputs": [
{
"internalType": "uint256",
"name": "",
"type": "uint256"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [
{
"internalType": "address",
"name": "spender",
"type": "address"
},
{
"internalType": "uint256",
"name": "value",
"type": "uint256"
}
],
"name": "approve",
"outputs": [
{
"internalType": "bool",
"name": "",
"type": "bool"
}
],
"stateMutability": "nonpayable",
"type": "function"
},
{
"inputs": [
{
"internalType": "address",
"name": "account",
"type": "address"
}
],
"name": "balanceOf",
"outputs": [
{
"internalType": "uint256",
"name": "",
"type": "uint256"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [
{
"internalType": "uint256",
"name": "value",
"type": "uint256"
}
],
"name": "burn",
"outputs": [],
"stateMutability": "nonpayable",
"type": "function"
},
{
"inputs": [
{
"internalType": "address",
"name": "account",
"type": "address"
},
{
"internalType": "uint256",
"name": "value",
"type": "uint256"
}
],
"name": "burnFrom",
"outputs": [],
"stateMutability": "nonpayable",
"type": "function"
},
{
"inputs": [],
"name": "decimals",
"outputs": [
{
"internalType": "uint8",
"name": "",
"type": "uint8"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [],
"name": "eip712Domain",
"outputs": [
{
"internalType": "bytes1",
"name": "fields",
"type": "bytes1"
},
{
"internalType": "string",
"name": "name",
"type": "string"
},
{
"internalType": "string",
"name": "version",
"type": "string"
},
{
"internalType": "uint256",
"name": "chainId",
"type": "uint256"
},
{
"internalType": "address",
"name": "verifyingContract",
"type": "address"
},
{
"internalType": "bytes32",
"name": "salt",
"type": "bytes32"
},
{
"internalType": "uint256[]",
"name": "extensions",
"type": "uint256[]"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [
{
"internalType": "address",
"name": "initialOwner",
"type": "address"
}
],
"name": "initialize",
"outputs": [],
"stateMutability": "nonpayable",
"type": "function"
},
{
"inputs": [
{
"internalType": "address",
"name": "to",
"type": "address"
},
{
"internalType": "uint256",
"name": "amount",
"type": "uint256"
}
],
"name": "mint",
"outputs": [],
"stateMutability": "nonpayable",
"type": "function"
},
{
"inputs": [],
"name": "name",
"outputs": [
{
"internalType": "string",
"name": "",
"type": "string"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [
{
"internalType": "address",
"name": "owner",
"type": "address"
}
],
"name": "nonces",
"outputs": [
{
"internalType": "uint256",
"name": "",
"type": "uint256"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [],
"name": "owner",
"outputs": [
{
"internalType": "address",
"name": "",
"type": "address"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [],
"name": "pause",
"outputs": [],
"stateMutability": "nonpayable",
"type": "function"
},
{
"inputs": [],
"name": "paused",
"outputs": [
{
"internalType": "bool",
"name": "",
"type": "bool"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [
{
"internalType": "address",
"name": "owner",
"type": "address"
},
{
"internalType": "address",
"name": "spender",
"type": "address"
},
{
"internalType": "uint256",
"name": "value",
"type": "uint256"
},
{
"internalType": "uint256",
"name": "deadline",
"type": "uint256"
},
{
"internalType": "uint8",
"name": "v",
"type": "uint8"
},
{
"internalType": "bytes32",
"name": "r",
"type": "bytes32"
},
{
"internalType": "bytes32",
"name": "s",
"type": "bytes32"
}
],
"name": "permit",
"outputs": [],
"stateMutability": "nonpayable",
"type": "function"
},
{
"inputs": [],
"name": "renounceOwnership",
"outputs": [],
"stateMutability": "nonpayable",
"type": "function"
},
{
"inputs": [],
"name": "symbol",
"outputs": [
{
"internalType": "string",
"name": "",
"type": "string"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [],
"name": "totalSupply",
"outputs": [
{
"internalType": "uint256",
"name": "",
"type": "uint256"
}
],
"stateMutability": "view",
"type": "function"
},
{
"inputs": [
{
"internalType": "address",
"name": "to",
"type": "address"
},
{
"internalType": "uint256",
"name": "value",
"type": "uint256"
}
],
"name": "transfer",
"outputs": [
{
"internalType": "bool",
"name": "",
"type": "bool"
}
],
"stateMutability": "nonpayable",
"type": "function"
},
{
"inputs": [
{
"internalType": "address",
"name": "from",
"type": "address"
},
{
"internalType": "address",
"name": "to",
"type": "address"
},
{
"internalType": "uint256",
"name": "value",
"type": "uint256"
}
],
"name": "transferFrom",
"outputs": [
{
"internalType": "bool",
"name": "",
"type": "bool"
}
],
"stateMutability": "nonpayable",
"type": "function"
},
{
"inputs": [
{
"internalType": "address",
"name": "newOwner",
"type": "address"
}
],
"name": "transferOwnership",
"outputs": [],
"stateMutability": "nonpayable",
"type": "function"
},
{
"inputs": [],
"name": "unpause",
"outputs": [],
"stateMutability": "nonpayable",
"type": "function"
}
]