Deprecated Backend ENVs
This table is horizontally scrollable, version information is located in the last column.
ETHEREUM_JSONRPC_JSON_RPC_TRANSPORT
Specifies the transport for blockscout to connect to the Ethereum Node. Available transports are http and ipc. If ipc is selected, also set IPC_PATH variable. Replaced with ETHEREUM_JSONRPC_TRANSPORT
http
v2.1.1+
v3.1.0
COINMARKETCAP_PAGES
the number of pages on coinmarketcap to list in order to find token's price
10
v1.3.10+
v2.0.4
COIN_GECKO_ID
CoinGecko coin id required for fetching an exchange rate
poa-network
v2.0.4+
v2.1.0+
NETWORK_ICON
Environment variable for the main network icon or testnet icon. Two options are _test_network_icon.html and _network_icon.html
_network_icon.html
All
v2.0.0+
REWARDS_CONTRACT_ADDRESS
Emission rewards contract address. This env var is used only if EMISSION_FORMAT is set to POA . Replaced with REWARDS_CONTRACT
0xeca443e8e1ab29971a45a9c57a6a9875701698a5
v2.0.4+
v3.1.0
OMNI_BRIDGE_MEDIATOR
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
ENABLE_1559_SUPPORT
Enables store and display of additional fields on block and transaction according to EIP-1559
false
v4.0.0+
v4.1.0
BLOCK_COUNT_CACHE_PERIOD
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
TXS_COUNT_CACHE_PERIOD
Interval in seconds to restart the task, which calculates the total txs count.
2 hours
v1.3.9+
v4.1.3
ADDRESS_COUNT_CACHE_PERIOD
time to live of cache in seconds. This var was introduced in #2822
2 hours
v2.1.1+
v4.1.3
ADDRESS_SUM_CACHE_PERIOD
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
TOTAL_GAS_USAGE_CACHE_PERIOD
Interval in seconds to restart the task, which calculates the total gas usage.
2 hours
v3.4.0+
v4.1.3
ADDRESS_TRANSACTIONS_GAS_USAGE_COUNTER_CACHE_PERIOD
Interval in seconds to restart the task, which calculates gas usage at the address.
30 minutes
v3.4.0+
v4.1.3
TOKEN_HOLDERS_COUNTER_CACHE_PERIOD
Interval in seconds to restart the task, which calculates holders count of the token.
1 hour
v3.4.0+
v4.1.3
TOKEN_TRANSFERS_COUNTER_CACHE_PERIOD
Interval in seconds to restart the task, which calculates transfers count of the token.
1 hour
v3.4.0+
v4.1.3
ADDRESS_WITH_BALANCES_UPDATE_INTERVAL
Interval in seconds to restart the task, which calculates addresses with balances.
30 minutes
v1.3.9+
v4.1.3
AVERAGE_BLOCK_CACHE_PERIOD
Update of average block period cache, in seconds
30 minutes
v2.0.2+
v4.1.3
MARKET_HISTORY_CACHE_PERIOD
Update of market history cache, in seconds
6 hours
v2.0.2+
v4.1.3
COINGECKO_COIN_ID
Explicitly set CoinGecko coin ID
(empty)
v3.1.2+
v4.1.4
SOURCE_MODULE
This environment variable is used to calculate the exchange rate and is specifically used by the xDai Chain. Available value is TokenBridge
(empty)
v1.0.0+
v4.1.4
POS_STAKING_CONTRACT
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
POS_ETH_SUBSCRIBE_MAX_DELAY
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 POS_ETH_BLOCKNUMBER_PULL_INTERVAL milliseconds until eth_subscribe works again.
60
v3.6.0+
v4.1.x
POS_ETH_BLOCKNUMBER_PULL_INTERVAL
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
ENABLE_POS_STAKING_IN_MENU
Enables Staking dapp in the menu
false
v3.6.0+
v4.1.x
SHOW_STAKING_WARNING
Disables/enables announcement inside staking dapp
false
v3.6.0+
v4.1.x
STAKING_WARNING_MESSAGE
Message text of the announcement inside staking dapp
(empty)
v3.6.0+
v4.1.x
ETH_OMNI_BRIDGE_MEDIATOR
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
BSC_OMNI_BRIDGE_MEDIATOR
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
AMB_BRIDGE_MEDIATORS
A comma-separated list of AMB extensions' mediators' addresses' hashes to fetch bridged tokens through those mediators.
(empty)
v3.6.0+
v4.1.x
FOREIGN_JSON_RPC
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
BRIDGE_MARKET_CAP_UPDATE_INTERVAL
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
DISABLE_BRIDGE_MARKET_CAP_UPDATER
Disables recurring consolidation of TokenBridge market cap from TokenBridge, OmniBridge and AMB extensions
(empty)
v3.3.3+
v4.1.x
EXTERNAL_APPS
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
API_PATH
PATH in API endpoint URL at API docs page.
/
v3.1.0+
✅
v5.1.1
SOCKET_ROOT
Custom websocket path.
(empty)
v3.0.0+
✅
v5.1.1
MAX_SIZE_UNLESS_HIDE_ARRAY
Hide long arrays in smart-contracts. To get more details: #4218
50
v3.7.1+
v5.1.2
ALLOWED_EVM_VERSIONS
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
DISABLE_KNOWN_TOKENS
Disables or enables token symbol for known contract.
false
v3.4.0+
v5.1.2
TOKEN_BALANCE_ON_DEMAND_FETCHER_THRESHOLD_MINUTES
A threshold to invalidate token balance cache. Implemented in #3870
60 minutes
v3.7.1+
v5.1.2
COIN_BALANCE_ON_DEMAND_FETCHER_THRESHOLD_MINUTES
A threshold to invalidate coin balance cache. Implemented in #5240
60 minutes
v4.1.2+
v5.1.2
CUSTOM_CONTRACT_ADDRESSES_TEST_TOKEN
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
CACHE_TOKEN_EXCHANGE_RATE_PERIOD
Managing cache invalidation for token's exchange rate.
1 hour
v3.5.0+
v5.1.2
INDEXER_DISABLE_EMPTY_BLOCK_SANITIZER
Empty blocks sanitizer is disabled if true
false
v4.1.3+
v5.1.2
HISTORY_FETCH_INTERVAL
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
WOBSERVER_ENABLED
If true enables wobserver interface.
(empty)
v3.3.2+
v5.1.3
VISUALIZE_SOL2UML_ENABLED
If true, integration with Rust sol2uml visualizer is enabled. Implemented in #6401
(empty)
v5.0.0+
v5.1.3
SIG_PROVIDER_SERVICE_URL
If true, integration with Rust sig-provider service is enabled. Implemented in #6541
(empty)
v5.1.0+
v5.1.3
ENABLE_RUST_VERIFICATION_SERVICE
If true, integration with Rust smart-contract verifier is enabled. Implemented in #5860
(empty)
v4.1.8+
v5.1.3
RUST_VERIFICATION_SERVICE_URL
URL of Rust smart-contract verifier. Implemented in #5860
(empty)
v4.1.8+
v5.1.3
LINK_TO_OTHER_EXPLORERS
true/false. If true, links to other explorers are added in the footer.
(empty)
v1.3.0+
v5.1.3
OTHER_EXPLORERS
The list of alternative explorers. This env var was introduced in PR #3414.
(empty)
v3.4.0+
v5.1.3
FOOTER_ENABLE_FORUM_LINK
Enable forum menu item in the footer. Implemented in #6351
false
v5.0.0+
v5.1.3
ENABLE_SOURCIFY_INTEGRATION
Enables or disables verification of contracts through Sourcify.
false
v3.7.0+
v5.1.3
ENABLE_TXS_STATS
Disables or enables txs per day stats gathering.
true
v3.1.2+
v5.1.3
CACHE_ENABLE_TOTAL_GAS_USAGE_COUNTER
if true, enables cache for total gas usage counter.
false
v5.1.2+
v5.1.3
LOGO_FOOTER
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
INDEXER_TOKEN_INSTANCE_CONCURRENCY
Concurrency for token instance fetcher. Implemented in #6981.
10
v5.1.2+
v5.1.4
INDEXER_TOKEN_INSTANCE_BATCH_SIZE
Batch size for token instance fetcher. Implemented in #6981.
1
v5.1.2+
v5.1.4
DISABLE_TOKEN_INSTANCE_FETCHER
If true, token instance fetcher doesn't run
false
v5.0.0+
v5.1.4
ACCOUNT_AUTHENTICATE_ENDPOINT_API_KEY
api/account/v1/authenticate api key (#7068)
(empty)
v5.1.2+
v5.1.5+
DISABLE_READ_API
If true, read-only endpoints to API are hidden (compile-time).
false
v2.0.3+
✅
v5.1.5
DISABLE_WRITE_API
If true, write endpoints to API are hidden (compile-time).
false
v2.0.3+
✅
v5.1.5
CONTRACT_VERIFICATION_ALLOWED_EVM_VERSIONS
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
EXCHANGE_RATES_SOURCE
This environment variable is used to calculate the exchange rates. Available value is token_bridge. Available values are also coin_gecko and coin_market_cap.
(empty)
v4.1.4+
v5.2.3
INDEXER_ZKEVM_BATCHES_ENABLED
Enables Polygon zkEVM batches fetcher. Implemented in #7584.
false
v5.3.1+
v6.2.0
INDEXER_ZKEVM_BATCHES_CHUNK_SIZE
The number of Polygon zkEVM batches in one chunk when reading them from RPC. Implemented in #7584.
20
v5.3.1+
v6.2.0
INDEXER_ZKEVM_BATCHES_RECHECK_INTERVAL
The latest batch rechecking interval, seconds. Implemented in #7584.
60
v5.3.1+
v6.2.0
GRAPHIQL_TRANSACTION
Default transaction hash in a sample query to GraphiQL.
(empty)
v1.2.0+
✅
v6.4.0
INDEXER_TOKEN_INSTANCE_RETRY_REFETCH_INTERVAL
Interval between attempts to fetch token instance metadata. Time format. Implemented in #7286.
24h
v5.1.4+
v6.6.0
INDEXER_INTERNAL_TRANSACTIONS_INDEXING_FINISHED_THRESHOLD
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
INDEXER_OPTIMISM_L1_DEPOSITS_START_BLOCK
The number of the L1 block from which deposits will be fetched. Implemented in #6993.
(empty)
v6.3.0+
v6.8.0
INDEXER_OPTIMISM_L1_WITHDRAWALS_START_BLOCK
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
INDEXER_OPTIMISM_L1_OUTPUT_ROOTS_START_BLOCK
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
INDEXER_OPTIMISM_L1_BATCH_START_BLOCK
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
INDEXER_OPTIMISM_L1_DEPOSITS_BATCH_SIZE
Number of blocks in a single eth_getLogs request of the Deposits fetcher. Implemented in #6993.
500
v6.3.0+
v6.8.0
METRICS_DISABLE_PUBLIC
Variable to disable running queries at /public-metrics endpoint. Implemented in #10279.
false
v6.7.2+
v6.8.0
RESTRICTED_LIST
A comma-separated list of addresses to enable restricted access to them.
(empty)
v3.3.3+
v6.10.0
RESTRICTED_LIST_KEY
A key to access addresses listed inRESTRICTED_LIST variable. Can be passed via query param to the page's URL: ?key=...
(empty)
v3.3.3+
v6.10.0
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