simple kovan-optimism -> http bridge for fetching contract info

powered by etherscan for ABIs and cloudflare for ethereum endpoints

now querying kovan-optimism. supports: ethereum, goerli, polygon, mumbai

bsc, bsc-testnet, kovan optimism, optimism

try it:

• /0xcontract.json
  returns the ABI of the given contract (in human-readable and raw abi format)
• ^new the abi returned for un-verified contracts is a best-guess given the ERC165 spec and common conventions. working to improve these matches soon. you can read from unverified ERC20 and ERC721 tokens
• ^new /nft/0x5A876ffc6E75066f5ca870e20FCa4754C1EfE91F/309.json /nft/{contract}/{id}.json – query nft data using github.com/ourzora/nft-metadata in json format
• ^new /nft/0x5A876ffc6E75066f5ca870e20FCa4754C1EfE91F/309/content show content of nft /nft/{contract}/{id}/content
• ^new /nft/0x5A876ffc6E75066f5ca870e20FCa4754C1EfE91F/309/image show image of nft /nft/{contract}/{id}/image
• /0xcontract/methodName/arg0
  returns the result of the given function call
• /0xcontract/methodName/arg0
  returns the result of the given function call (works for media too)
• /0x8d04a8c79ceb0889bdd12acdf3fa9d207ed3ff63/isApprovedForAll/0xADDRESS0/0xADDRESS1
  works with booleans and multiple arguments.