Optimism
OP
Optimism (OP) Calendar: Release Schedule, Listings, Hard Fork, Halving
Listing on 
HashKey Exchange
HashKey Exchange will list Optimism (OP) on March 7th at 8:00 UTC. The trading pair will be OP/USD.
Art Contest
Optimism will host a contest “We Love The Art” taking submissions from November 9th to January 8th. The contest has a prize pool of 1 million OP.
Maintenance
Optimism has announced a scheduled maintenance window for OP Goerli. The maintenance is set to start on December 20th at 20:30 UTC.
Bitbank
Indodax
On-Chain Summit in Istanbul
Optimism is set to participate in the On-chain Summit in Istanbul on November 16th.
Canyon Network on Testnet
Optimism will launch the Canyon network upgrade on November 15th on the testnet.
Tokens Unlock
Optimism will unlock 24,160,000 OP tokens on August 30th, constituting approximately 3.37% of the currently circulating supply.
Maintenance
Optimism has announced that there will be a brief interruption in service on the OP mainnet on August 28th at 17:00 UTC.
On-Chain Art and Culture Campaign
Optimism is set to be a part of the On-chain Summer event, a campaign organized by Base.