Deprecated Backend ENVs
This table is horizontally scrollable, version information is located in the last column.
| Variable | Required | Description | Default | Version | Need recompile | Deprecated in Version |
|---|---|---|---|---|---|---|
| Specifies the transport for blockscout to connect to the Ethereum Node. Available transports are |
| v2.1.1+ | v3.1.0 | ||
| the number of pages on coinmarketcap to list in order to find token's price | 10 | v1.3.10+ | v2.0.4 | ||
| CoinGecko coin id required for fetching an exchange rate | poa-network | v2.0.4+ | v2.1.0+ | ||
| Environment variable for the main network icon or testnet icon. Two options are | _network_icon.html | All | v2.0.0+ | ||
| Emission rewards contract address. This env var is used only if |
| v2.0.4+ | v3.1.0 | ||
| An address of home OmniBridge mediator to bridge multiple tokens from Ethereum. Providing this address enables bridged tokens functionality: bridged status and link to the original token in the foreign chain. | (empty) | v3.3.2+ | v3.6.0 | ||
| Enables store and display of additional fields on block and transaction according to EIP-1559 | false | v4.0.0+ | v4.1.0 | ||
| time to live of blocks with consensus count cache in seconds. This var was introduced in #1876 | 2 hours | v2.0.0+ | v4.1.3 | ||
| Interval in seconds to restart the task, which calculates the total txs count. | 2 hours | v1.3.9+ | v4.1.3 | ||
| time to live of cache in seconds. This var was introduced in #2822 | 2 hours | v2.1.1+ | v4.1.3 | ||
| time to live of addresses sum (except burn address) cache in seconds. This var was introduced in #2862 | 1 hour | v2.1.1+ | v4.1.3 | ||
| Interval in seconds to restart the task, which calculates the total gas usage. | 2 hours | v3.4.0+ | v4.1.3 | ||
| Interval in seconds to restart the task, which calculates gas usage at the address. | 30 minutes | v3.4.0+ | v4.1.3 | ||
| Interval in seconds to restart the task, which calculates holders count of the token. | 1 hour | v3.4.0+ | v4.1.3 | ||
| Interval in seconds to restart the task, which calculates transfers count of the token. | 1 hour | v3.4.0+ | v4.1.3 | ||
| Interval in seconds to restart the task, which calculates addresses with balances. | 30 minutes | v1.3.9+ | v4.1.3 | ||
| Update of average block period cache, in seconds | 30 minutes | v2.0.2+ | v4.1.3 | ||
| Update of market history cache, in seconds | 6 hours | v2.0.2+ | v4.1.3 | ||
| Explicitly set CoinGecko coin ID | (empty) | v3.1.2+ | v4.1.4 | ||
| This environment variable is used to calculate the exchange rate and is specifically used by the xDai Chain. Available value is | (empty) | v1.0.0+ | v4.1.4 | ||
| The address of POSDAO staking contract. When provided, enables staking DApp. ValidatorSet and BlockReward contract addresses are fetched using corresponding getters. | (empty) | v3.4.0+ | v4.1.x | ||
| Used by the staking DApp. The number of seconds of max delay after the latest block number arrived from eth_subscribe. Once this time is elapsed, the staking DApp automatically switches to eth_blockNumber which then is requested every | 60 | v3.6.0+ | v4.1.x | ||
| An interval between eth_blockNumber requests (in milliseconds) made by staking DApp to retrieve a new block number. Used when eth_subscribe stops working. | 500 | v3.6.0+ | v4.1.x | ||
| Enables Staking dapp in the menu | false | v3.6.0+ | v4.1.x | ||
| Disables/enables announcement inside staking dapp | false | v3.6.0+ | v4.1.x | ||
| Message text of the announcement inside staking dapp | (empty) | v3.6.0+ | v4.1.x | ||
| An address of home OmniBridge mediator to bridge multiple tokens from Ethereum. Providing this address enables bridged tokens functionality: bridged status and link to the original token in the foreign chain. | (empty) | v3.6.0+ | v4.1.x | ||
| An address of home OmniBridge mediator to bridge multiple tokens from Binance Smart Chain. Providing this address enables bridged tokens functionality: bridged status and link to the original token in the foreign chain. | (empty) | v3.6.0+ | v4.1.x | ||
| A comma-separated list of AMB extensions' mediators' addresses' hashes to fetch bridged tokens through those mediators. | (empty) | v3.6.0+ | v4.1.x | ||
| JSON RPC endpoint to the foreign chain in order to get metadata of bridged through Omni-bridge token. It was introduced in this PR #3282 | (empty) | v3.3.3+ | v4.1.x | ||
| Market cap update interval for `TokenBridge` supply module as for TokenBridge and for OmniBridge as well, in seconds. It was introduced in this PR #3293 | 30 minutes | v3.3.3+ | v4.1.x | ||
| Disables recurring consolidation of TokenBridge market cap from TokenBridge, OmniBridge and AMB extensions | (empty) | v3.3.3+ | v4.1.x | ||
| An array of external apps to display in Apps menu item. This var was introduced in this PR #3184 and looks like an array of JSON objects. | (empty) | v3.3.1+ | v5.0.0 | ||
| PATH in API endpoint URL at API docs page. | / | v3.1.0+ | ✅ | v5.1.1 | |
| Custom websocket path. | (empty) | v3.0.0+ | ✅ | v5.1.1 | |
| Hide long arrays in smart-contracts. To get more details: #4218 | 50 | v3.7.1+ | v5.1.2 | ||
| the comma-separated list of allowed EVM versions for contract verification. This var was introduced in #1964 | "homestead, tangerineWhistle, spuriousDragon, byzantium, constantinople, petersburg,istanbul" | v2.0.0+ | v5.1.2 | ||
| Disables or enables token symbol for known contract. | false | v3.4.0+ | v5.1.2 | ||
| A threshold to invalidate token balance cache. Implemented in #3870 | 60 minutes | v3.7.1+ | v5.1.2 | ||
| A threshold to invalidate coin balance cache. Implemented in #5240 | 60 minutes | v4.1.2+ | v5.1.2 | ||
| List of test tokens addresses: test label will be applied and those tokens will be excluded from omni bridge market cap calculation. | (empty) | v3.6.0+ | v5.1.2 | ||
| Managing cache invalidation for token's exchange rate. | 1 hour | v3.5.0+ | v5.1.2 | ||
| Empty blocks sanitizer is disabled if | false | v4.1.3+ | v5.1.2 | ||
| Interval how often to request count of txs per current day in order to display txs count per day chart on the main page. Time format. | 1h | v3.1.2+ | v5.1.3 | ||
| If | (empty) | v3.3.2+ | v5.1.3 | ||
| If | (empty) | v5.0.0+ | v5.1.3 | ||
| URL of Rust visualizer. Implemented in #6401 | (empty) | v5.0.0+ | v5.1.3 | ||
| If | (empty) | v5.1.0+ | v5.1.3 | ||
| URL of Rust sig-provider service. Implemented in #6541 | (empty) | v5.1.0+ | v5.1.3 | ||
| If | (empty) | v4.1.8+ | v5.1.3 | ||
| URL of Rust smart-contract verifier. Implemented in #5860 | (empty) | v4.1.8+ | v5.1.3 | ||
| true/false. If true, links to other explorers are added in the footer. | (empty) | v1.3.0+ | v5.1.3 | ||
| The list of alternative explorers. This env var was introduced in PR #3414. | (empty) | v3.4.0+ | v5.1.3 | ||
| Enable forum menu item in the footer. Implemented in #6351 | false | v5.0.0+ | v5.1.3 | ||
| Enables or disables verification of contracts through Sourcify. | false | v3.7.0+ | v5.1.3 | ||
| Disables or enables txs per day stats gathering. | true | v3.1.2+ | v5.1.3 | ||
| if |
| v5.1.2+ | v5.1.3 | ||
| Environment variable for the footer logo image location. The logo files names for different chains can be found here. | /images/blockscout_logo.svg | v5.1.3 | |||
| Concurrency for token instance fetcher. Implemented in #6981. | 10 | v5.1.2+ | v5.1.4 | ||
| Batch size for token instance fetcher. Implemented in #6981. | 1 | v5.1.2+ | v5.1.4 | ||
| If |
| v5.0.0+ | v5.1.4 | ||
| Auth0 logout URL Ueberauth Auth0 | (empty) | v5.0.0+ | v5.1.4 | ||
| Auth0 logout return URL Ueberauth Auth0 | (empty) | v5.0.0+ | v5.1.4 | ||
|
| (empty) | v5.1.2+ | v5.1.5+ | ||
| If |
| v2.0.3+ | ✅ | v5.1.5 | |
| If |
| v2.0.3+ | ✅ | v5.1.5 | |
| the comma-separated list of allowed EVM versions for contract verification. This var was introduced in #1964 | "homestead, tangerineWhistle, spuriousDragon, byzantium, constantinople, petersburg,istanbul" | v2.0.0+ | v5.2.0 | ||
| This environment variable is used to calculate the exchange rates. Available value is | (empty) | v4.1.4+ | v5.2.3 | ||
| Enables Polygon zkEVM batches fetcher. Implemented in #7584. |
| v5.3.1+ | v6.2.0 | ||
| The number of Polygon zkEVM batches in one chunk when reading them from RPC. Implemented in #7584. | 20 | v5.3.1+ | v6.2.0 | ||
| The latest batch rechecking interval, seconds. Implemented in #7584. | 60 | v5.3.1+ | v6.2.0 | ||
| Default transaction hash in a sample query to GraphiQL. | (empty) | v1.2.0+ | ✅ | v6.4.0 | |
| Interval between attempts to fetch token instance metadata. Time format. Implemented in #7286. |
| v5.1.4+ | v6.6.0 | ||
| In the case when the 1st tx in the chain already has internal transactions, If the number of blocks in pending_block_operations is less than the value in this env var, Blockscout will consider, that indexing of internal transactions finished, otherwise, it will consider, that indexing is still taking place and the indexing banner will appear at the top. Implemented in #7576. | 1000 | v5.2.0+ | v6.6.0 | ||
| The number of the L1 block from which deposits will be fetched. Implemented in #6993. | (empty) | v6.3.0+ | v6.8.0 | ||
| The number of start block on L1 to index withdrawal events. If the table of withdrawal events is not empty, the process will continue indexing from the last indexed withdrawal event. Implemented in #6980. | (empty) | v6.3.0+ | v6.8.0 | ||
| The number of start block on L1 to index output roots. If the table of output roots is not empty, the process will continue indexing from the last indexed root. Implemented in #6980. | (empty) | v6.3.0+ | v6.8.0 | ||
| The number of start block on L1 to index transaction batches. If the table of batches is not empty, the process will continue indexing from the last indexed batch. Implemented in #6980. | (empty) | v6.3.0+ | v6.8.0 | ||
| Number of blocks in a single | 500 | v6.3.0+ | master | ||
| Variable to disable running queries at /public-metrics endpoint. Implemented in #10279. | false | v6.7.2+ | v6.8.0 |
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