Optimism
OP
Optimism (OP) Calendar: Release Schedule, Listings, Hard Fork, Halving
Bitbank
On-Chain Summit in Istanbul
Optimism is set to participate in the On-chain Summit in Istanbul on November 16th.
Indodax
Canyon Network on Testnet
Optimism will launch the Canyon network upgrade on November 15th on the testnet.
AMA on X
Optimism will host a discussion with 3DNS, a decentralized domain name service, on the topic of on-chain domains.
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.
Tokens Unlock
Optimism will unlock 586,670 OP tokens on July 30th, constituting approximately 3.56% of the currently circulating supply.
Listing on 
Bitfinex
Bitfinex will list Optimism (OP) on July 27th at 10:00 UTC. OP will be available to trade with US Dollars (OP/USD) and Tether tokens (OP/USDT).
