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Smart-contract Verifier

Smart-contract verifier is a service for verifying EVM-based contracts. The primary function of this service is to receive bytecode and potential source files as inputs and determine whether the files and the bytecode correspond to each other.

This service serves as the core component for all activities related to smart-contract verification in BlockScout. It is essential for enabling smart-contract verification functionality on your instance.

Requirements

No additional dependencies

How to enable

Set the following ENVs on blockscout instance:

  • MICROSERVICE_SC_VERIFIER_ENABLED=true
  • MICROSERVICE_SC_VERIFIER_URL={service_url}
  • MICROSERVICE_SC_VERIFIER_TYPE=sc_verifier

Envs

Here, we describe variables specific to this service. Variables common to all services can be found here.

Variable Required Description Default value
SMART_CONTRACT_VERIFIER__SOLIDITY__ENABLED Enable Solidity verification endpoints true
SMART_CONTRACT_VERIFIER__SOLIDITY__FETCHER__LIST__LIST_URL Url that contains a list available Solidity compilers https://solc-bin.ethereum.org/linux-amd64/list.json
SMART_CONTRACT_VERIFIER__SOLIDITY__REFRESH_VERSIONS_SCHEDULE Cron-format schedule to update the list of available Solidity compilers 0 0 * * * * *
SMART_CONTRACT_VERIFIER__SOLIDITY__COMPILERS_DIR Directory where Solidity compilers will be downloaded /tmp/solidity-compilers
SMART_CONTRACT_VERIFIER__VYPER__ENABLED Enable Vyper verification endpoints true
SMART_CONTRACT_VERIFIER__VYPER__FETCHER__LIST__LIST_URL Url that contains a list of available Vyper compilers https://raw.githubusercontent.com/blockscout/solc-bin/main/vyper.list.json
SMART_CONTRACT_VERIFIER__VYPER__REFRESH_VERSIONS_SCHEDULE Cron-format schedule to update the list of available Vyper compilers 0 0 * * * * *
SMART_CONTRACT_VERIFIER__VYPER__COMPILERS_DIR Directory where Vyper compilers will be downloaded /tmp/vyper-compilers
SMART_CONTRACT_VERIFIER__SOURCIFY__ENABLED Enable Soucify verification endpoint true
SMART_CONTRACT_VERIFIER__SOURCIFY__API_URL Sourcify API url https://sourcify.dev/server/
SMART_CONTRACT_VERIFIER__SOURCIFY__VERIFICATION_ATTEMPTS Number of attempts the server makes to Sourcify API. Must be at least 1 3
SMART_CONTRACT_VERIFIER__SOURCIFY__REQUEST_TIMEOUT Timeout in seconds for a single request to Sourcify API 15
SMART_CONTRACT_VERIFIER__COMPILERS__MAX_THREADS Maximum number of concurrent compilations 8

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