Chain data
The TrueBlocks tools extract raw blockchain data directly from the node. You may extract block data, transactional data, receipts, logs, and traces. Each tool has it own set of options, allowing you to get exactly the data that you want.
chifra blocks
The chifra blocks tool retrieves block data from your Ethereum node or, if previously cached, from the TrueBlocks cache. You may specify multiple blocks per invocation.
By default, chifra blocks queries the full transactional details of the block (including receipts). You may optionally retrieve only the transaction hashes in the block (which is significantly faster). Additionally, you may also use this tool to retrieve uncle blocks at a give height.
Another useful feature of chifra blocks is the ability to extract address appearances from a block. TrueBlocks uses a similar feature internally to build its index of appearances. This type of data is very insightful when studying end user behavior and chain-wide adoption analysis.
Purpose:
Retrieve one or more blocks from the chain or local cache.
Usage:
chifra blocks [flags] <block> [block...]
Arguments:
blocks - a space-separated list of one or more block identifiers (required)
Flags:
-e, --hashes display only transaction hashes, default is to display full transaction detail
-U, --uncles display uncle blocks (if any) instead of the requested block
-t, --trace export the traces from the block as opposed to the block data
-s, --apps display a list of uniq address appearances in the block
-u, --uniq display a list of uniq address appearances per transaction
-c, --count display the number of the lists of appearances for --addrs or --uniq
-o, --cache force a write of the block to the cache
-x, --fmt string export format, one of [none|json*|txt|csv|api]
-v, --verbose enable verbose (increase detail with --log_level)
-h, --help display this help screen
Notes:
- blocks is a space-separated list of values, a start-end range, a special, or any combination.
- blocks may be specified as either numbers or hashes.
- special blocks are detailed under chifra when --list.
- With the --logs option, optionally specify one or more --emmitter, one or more --topics, either or both.
- The --logs option is significantly faster if you provide an --emitter and/or a --topic.
- Multiple topics match on topic0, topic1, and so on, not on different topic0's.
- Large block ranges may crash the node, use --big_range to specify a larger range.
Source code: internal/blocks
chifra receipts
chifra receipts returns the given transaction’s receipt. You may specify multiple transaction identifiers per invocation.
The --articulate option fetches the ABI from each encountered smart contract (including those encountered in a trace–if the --trace option is enabled) to better describe the reported data.
Generally speaking, this tool is less useful than others as you may report the same data using chifra transactions and more focused data using chifra logs. It is included here for completeness, as the receipt is a fundamental data structure in Ethereum.
Purpose:
Retrieve receipts for the given transaction(s).
Usage:
chifra receipts [flags] <tx_id> [tx_id...]
Arguments:
transactions - a space-separated list of one or more transaction identifiers (required)
Flags:
-a, --articulate articulate the retrieved data if ABIs can be found
-x, --fmt string export format, one of [none|json*|txt|csv|api]
-v, --verbose enable verbose (increase detail with --log_level)
-h, --help display this help screen
Notes:
- The transactions list may be one or more transaction hashes, blockNumber.transactionID pairs, or a blockHash.transactionID pairs.
- This tool checks for valid input syntax, but does not check that the transaction requested actually exists.
- If the queried node does not store historical state, the results for most older transactions are undefined.
Source code: internal/receipts
chifra logs
chifra logs returns the given transaction’s logs. You may specify multiple transaction identifiers per invocation.
The --articulate option fetches the ABI from each encountered smart contract to better describe the reported data. The --topic and --source options allow you to filter your results.
Purpose:
Retrieve logs for the given transaction(s).
Usage:
chifra logs [flags] <tx_id> [tx_id...]
Arguments:
transactions - a space-separated list of one or more transaction identifiers (required)
Flags:
-a, --articulate articulate the retrieved data if ABIs can be found
-x, --fmt string export format, one of [none|json*|txt|csv|api]
-v, --verbose enable verbose (increase detail with --log_level)
-h, --help display this help screen
Notes:
- The transactions list may be one or more transaction hashes, blockNumber.transactionID pairs, or a blockHash.transactionID pairs.
- This tool checks for valid input syntax, but does not check that the transaction requested actually exists.
- If the queried node does not store historical state, the results for most older transactions are undefined.
- If you specify a 32-byte hash, it will be assumed to be a transaction hash, if the transaction is not found, it will be used as a topic.
Source code: internal/logs
chifra traces
The chifra traces tool retrieves a transaction’s traces. You may specify multiple transaction identifiers per invocation.
The --articulate option fetches the ABI from each encountered smart contract to better describe the reported data.
The --filter option calls your node’s trace_filter routine (if available) using a bang-separated string of the same values used by trace_fitler.
Purpose:
Retrieve traces for the given transaction(s).
Usage:
chifra traces [flags] <tx_id> [tx_id...]
Arguments:
transactions - a space-separated list of one or more transaction identifiers (required)
Flags:
-a, --articulate articulate the retrieved data if ABIs can be found
-f, --filter string call the node's trace_filter routine with bang-separated filter
-d, --statediff export state diff traces (not implemented)
-c, --count show the number of traces for the transaction only (fast)
-x, --fmt string export format, one of [none|json*|txt|csv|api]
-v, --verbose enable verbose (increase detail with --log_level)
-h, --help display this help screen
Notes:
- The transactions list may be one or more transaction hashes, blockNumber.transactionID pairs, or a blockHash.transactionID pairs.
- This tool checks for valid input syntax, but does not check that the transaction requested actually exists.
- If the queried node does not store historical state, the results for most older transactions are undefined.
- A bang separated filter has the following fields (at least one of which is required) and is separated with a bang (!): fromBlk, toBlk, fromAddr, toAddr, after, count.
- A state diff trace describes, for each modified address, what changed during that trace.
Source code: internal/traces
chifra when
The chifra when tool answers one of two questions: (1) “At what date and time did a given block occur?” or (2) “What block occurred at or before a given date and time?”
In the first case, supply a block number or hash and the date and time of that block are displayed. In the later case, supply a date (and optionally a time) and the block number that occurred at or just prior to that date is displayed.
The values for date and time are specified in JSON format. hour/minute/second are optional, and if omitted, default to zero in each case. Block numbers may be specified as either integers or hexadecimal number or block hashes. You may specify any number of dates and/or blocks per invocation.
Purpose:
Find block(s) based on date, blockNum, timestamp, or 'special'.
Usage:
chifra when [flags] < block | date > [ block... | date... ]
Arguments:
blocks - one or more dates, block numbers, hashes, or special named blocks (see notes) (required)
Flags:
-l, --list export a list of the 'special' blocks
-t, --timestamps ignore other options and generate timestamps only
-x, --fmt string export format, one of [none|json*|txt|csv|api]
-v, --verbose enable verbose (increase detail with --log_level)
-h, --help display this help screen
Notes:
- The block list may contain any combination of number, hash, date, special named blocks.
- Dates must be formatted in JSON format: YYYY-MM-DD[THH[:MM[:SS]]].
Source code: internal/when