EthereumAlarmClock

This contract was deployed at block 274899 on September 22, 2015, approximately twelve hours after the first Ethereum Alarm Clock deployment at block 273762 by the same address (0xd3CdA913deB6f67967B99D67aCDFa1712C293601). The contract was deployed with 2,328 bytes of bytecode and received five transactions, including interaction calls within the same hour of deployment.

The rapid follow-up deployment on the same day as the initial launch indicates early testing and iteration of the scheduling service. Blocks 274905 and 274925 contain interaction calls with 74-byte inputs, suggesting function calls against the newly deployed contract. A call at block 274927 with a 138-byte input likely represents a more complex scheduling operation. A final interaction at block 275985 completed the initial test cycle.

Piper Merriam described working extensively on the Ethereum Alarm Clock after launch, fixing attack vectors and refining the game theory for executor incentives. This same-day iteration is consistent with that pattern of rapid development: identifying issues or improvements in the initial deployment and immediately producing a revised contract.

The deployer's activity on September 22, 2015 demonstrates the development pace common among early Ethereum infrastructure builders: deploy, test, and revise within hours using live mainnet as the testing environment, a practice that was typical in the Frontier era before testnets were widely used.