Add support of contracts verification in BlockScout

[vbaranov]

https://blockscout.com/
https://github.com/poanetwork/blockscout

BlockScout is a fully-featured open-source blockchain explorer for any EVM-compatible chains. POA network hosts multiple chains itself:

Chain	Network ID	instance	API endpoint	API docs endpoint
ETH Mainnet	1	https://blockscout.com/eth/mainnet	./api	./api_docs
Kovan	42	https://blockscout.com/eth/kovan	./api	./api_docs
Rinkeby	4	https://blockscout.com/eth/rinkeby	./api	./api_docs
Ropsten	3	https://blockscout.com/eth/ropsten	./api	./api_docs
Goerli	5	https://blockscout.com/eth/goerli	./api	./api_docs
POA Sokol	77	https://blockscout.com/poa/sokol	./api	./api_docs
POA Core	99	https://blockscout.com/poa/core	./api	./api_docs
xDai	100	https://blockscout.com/poa/dai	./api	./api_docs
RSK Mainnet	31	https://blockscout.com/rsk/mainnet	./api	./api_docs
LUKSO L14 testnet	22	https://blockscout.com/lukso/l14	./api	./api_docs

And every API instance provides contracts verification API endpoint:

?module=contract&action=verify&addressHash={addressHash}&name={name}&compilerVersion={compilerVersion}&optimization={false}&contractSourceCode={contractSourceCode}

The description of this endpoint and Try it out section is on api_docs page.

It would be awesome to have it integrated to etherlime.

[ochikov]

Hello @vbaranov and thank you for the opened issue. We are going to include Blockscout verification in our roadmap. I am going to keep you updated!

Thank you,

[leonprou]

We are using etherlime to deploy contract to our sidechain where we have only blockscout, so making this work would be really awesome 😊

[Perseverance]

Thanks guys, we had some drawbacks on progressing on the roadmap. Blockscout integration is literally the next thing we plan on integrating with