Am trying to write small application which will be able to find Contract deployment transaction with only input parameter – contract address. The application should be able to search entire net.,i,e say Rinkeby and should exactly find deployed transaction hash. This is applicable for any given contract address in rinkeby. I do not want to search with events or logs. Specifically am looking for how to find all the transactions with "0x0" as target programmatically?
[Ethereum] How to find deployed transaction hash of any given contract in chain, with just “contract address” information
contract-deployment
Related Solutions
The consensus blockchain doesn't contain any easily queryable information to figure out the creation time of a contract based solely on its address. If you have the hash of the transaction that created the contract, retrieving that would give you back the block number too.
If you need only to occasionally figure out the creation block of a/some contracts, you could also consult a block explorer for the first transaction.
However, although finding events belonging to a contract in the entire chain is obviously slower than searching from only a known starting block, event queries use mip-mapped bloom filters, so they should be relatively fast at the current chain size. The canonical solution is to create a filter from block 0 initially, and then store away the block number until which you already processed the blocks and only continue from there the next time.
You are possibly looking for something more progamatic. A good starting point is the idea that each contract starts with a deployment transaction. It's always the first transaction in the contract history.
On Etherscan
Hope it helps.
Best Answer
I found the answer myself- Its pretty simple infact: