DeFi週報 - Uniswap v3部署Optimism主網, Lodon升級暫定時間, Perpetual Protocol V2等等

以下這週發生的重大事件：

1. Uniswap v3部署Optimism主網 https://twitter.com/optimismpbr/status/1413260412162912258
2. Ethereum mainnet London (包括EIP1559) 升級暫定為2021年8月4日 https://github.com/ethereum/eth1.0-specs/pull/223
3. Perpetual Protocol V2 將在Layer2解決方案Arbitrum上線https://twitter.com/perpprotocol/status/1410221752526028801
4. Yearn創辦人Andre Cronje開源了幾個試驗項目https://twitter.com/AndreCronjeTech/status/1411244286146977792
5. Aave Pro將在7月上線 https://twitter.com/TraderNoah/status/1411719489947906048
6. Lyra期權交易比賽 https://twitter.com/lyrafinance/status/1412238865667026965 [DeFi筆記] 免費參加Lyra的期權交易比賽 瓜分總值5萬鎂的獎金
7. ShibaSwap上線 https://twitter.com/Shibtoken/status/1412334569903304704
8. Yearn開發者banteg指出ShibaSwap有合約風險 https://twitter.com/bantg/status/1412370758987354116
9. Samuel Shadrach的alpha leak：看有那些項目準備好上L2 https://twitter.com/SamuelShadrach4/status/1411670290917060610
10. Synthetix創辦人Kain說未來幾星期會有關於Optimism的重大消息https://twitter.com/SNXified/status/1412361032811659269
11. Lido成為了ETH2.0單一最大存款地址 https://twitter.com/ASvanevik/status/1404302756593102850
12. ETH交易所總量達到2.5年新低 https://twitter.com/cryptoquant_com/status/1411973786941804547
13. Curve USDN pool veCRV投票抽獎 https://twitter.com/sasha35625/status/1412718856896978945
14. 加密貨幣Visa卡半年達到10億美元使用量 https://twitter.com/CoinDesk/status/1412728353644290054
15. 瑞士銀行Sygnum提供ETH2.0質押服務 https://www.abmedia.io/20210707-sygnum-becomes-first-bank-to-offer-ethereum-staking
16. Axie Infinity (AXS) 爆紅 https://www.abmedia.io/20210705-axie-generated-more-revenue-than-top-defishttps://twitter.com/DappRadar/status/1413026058136399872
17. USDC發行商Circle將透過SPACE上市 https://news.cnyes.com/news/id/4674711