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Blockchain Inspection
Retrieves the state that corresponds to the block number and returns a list of accounts (including storage and code).
NOTE: This function correctly returns the state for a few latest, currently 4, block numbers. Retrieving older block state is restricted depending on the value set for the command-line option
--state.block-interval (default: 128). This means that the function performs the state retrieval against only the block numbers that are multiples of state.block-interval. For example, when state.block-interval is 128, this function returns the state for the block numbers "0x0", "0x80", "0x100", "0x180", and so on. If the block number is not a multiple of state.block-interval, it returns 'missing trie node' error.Client | Method Invocation |
|---|---|
Console | debug.dumpBlock(number) |
RPC | {"method": "debug_dumpBlock", "params": [number]} |
Parameters
Name | Type | Description |
|---|---|---|
block number or hash | QUANTITY | TAG | HASH | Integer or hexadecimal block number, or the string "earliest", "latest" or "pending" as in the default block parameter, or block hash. |
NOTE: In versions earlier than Klaytn v1.7.0, only hex string type is available.
Return Value
Type | Description |
|---|---|
JSON string | The block information. |
Example
Console
> debug.dumpBlock("0x80")
{
accounts: {
0000000000000000000000000000000000000035: {
balance: "12800000000000000000",
code: "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",
codeHash: "62b00472fac99d94ccc52f5addac43d54c129cd2c6d2357c9557abea67efdec5",
nonce: 0,
root: "56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
storage: {}
},
/...(skipped).../
codeHash: "3f34b5d7038ae652086ba4847ede2668b26a50107c5258d1412f764b942e2661",
nonce: 1,
root: "56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421",
storage: {}
}
},
root: "70383c826d1161ec2f12d799023317d8da7775dd47b8502d2d7ef646d094d3a5"
}
> debug.dumpBlock("0x81")
Error: missing trie node a573119868e0898fe5526732a079dd713c005fcbcce38dec5cae75af0378e4d3 (path )
at web3.js:3239:20
at web3.js:6447:15
at web3.js:5181:36
at <anonymous>:1:1
HTTP RPC
$ curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"debug_dumpBlock","params":["0x80"],"id":1}' https://api.baobab.klaytn.net:8651
{"jsonrpc":"2.0","id":1,"result":{"root":"70383c826d1161ec2f12d799023317d8da7775dd47b8502d2d7ef646d094d3a5","accounts":{"0000000000000000000000000000000000000035":{"balance":"12800000000000000000","nonce":0,"root":"56e81f171bcc55a6ff8345e692c0f86e5b48e01b996cadc001622fb5e363b421","codeHash":"62b00472fac99d94ccc52f5addac43d54c129cd2c6d2357c9557abea67efdec5","code":"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","storage":{}},...(skipped)...}}}
Retrieves all state/storage tries of the given state root.
Client | Method Invocation |
|---|---|
Console | debug.dumpStateTrie(number) |
RPC | {"method": "debug_dumpStateTrie", "params": [number]} |
Parameters
Name | Type | Description |
|---|---|---|
number | int | The block number. |
Return Value
Type | Description |
|---|---|
JSON string | Dump state Trie result |
Example
Console
> debug.dumpStateTrie(10)
{
root: "70383c826d1161ec2f12d799023317d8da7775dd47b8502d2d7ef646d094d3a5",
tries: [...]
}
HTTP RPC
$ curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"debug_dumpStateTrie","params":["0x80"],"id":1}' https://api.baobab.klaytn.net:8651
{"jsonrpc":"2.0","id":1,"result":{"root":"70383c826d1161ec2f12d799023317d8da7775dd47b8502d2d7ef646d094d3a5","tries":[...]}}
Retrieves and returns the RLP-encoded block by the block number.
Client | Method Invocation |
|---|---|
Console | debug.getBlockRlp(number) |
RPC | {"method": "debug_getBlockRlp", "params": [number]} |
Parameters
Name | Type | Description |
|---|---|---|
block number or hash | QUANTITY | TAG | HASH | Integer or hexadecimal block number, or the string "earliest", "latest" or "pending" as in the default block parameter, or block hash. |
NOTE: In versions earlier than Klaytn v1.7.0, only integer type is available.
Return Value
Type | Description |
|---|---|
string | The RLP-encoded block. |
Example
Console
> debug.getBlockRlp(100)
"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"
HTTP RPC
$ curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"debug_getBlockRlp","params":['200'],"id":1}' https://api.baobab.klaytn.net:8651
{"jsonrpc":"2.0","id":1,"result":"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"}
Returns all accounts that have changed between the two blocks specified by their block hashes. Changes made in
endBlockHash are included, but changes made in startBlockHash are not. If endBlockHash is not given, it returns the accounts modified in the startBlockHash. A change is defined as a difference in nonce, balance, code hash, or storage hash.Client | Method Invocation |
|---|---|
Console | debug.getModifiedAccountsByNumber(startBlockHash, endBlockHash) |
RPC | {"method": "debug_getModifiedAccountsByNumber", "params": [startBlockHash, endBlockHash]} |
Parameters
Name | Type | Description |
|---|---|---|
startBlockHash | 32-byte DATA | The first block hash of the range to check. |
endBlockHash | 32-byte DATA | (optional) The last block hash of the range. |
Return Value
Type | Description |
|---|---|
JSON string | The list of addresses modified between the given range. |
Example
Console
> debug.getModifiedAccountsByHash("0x583a02df4222c82d4ffe5d3658d0f7ac233f4dc5de83f6430d74199038b606b6", "0x69833f0fc012dc36be910aa6909f5395cd35136dbeae29ed2170a7d4162a009c")
["0x31b93ca83b5ad17582e886c400667c6f698b8ccd", "0xb7fe15c42e66bd71835b07dc6e7daee7729f6235", "0xe31a0edb11357dba71377e625fc6174da4ef4321", "0x16b11cf9c2186a117b0da38315b42b1eaa03bbe5", "0xd3ec3c7e4cad042dbdcb6a7e0fdbc55a92276f12", "0xa4e0d726ce51572e66295756ad93206592c43a59", "0xf65e07b6626ab43ecea744803fa46bd4a89bfdb6", "0xaac56dfe44f9894d4f536cd17acfbc44bf81a843", "0x3855407fa65c4c5104648b3a9e495072df62b585", "0x61a7cbdd597848494fa85cbb76f9c63ad9c06cad", "0xa4845491cb0dad5bd6707a33c02af0d9db435c15", "0x026e8f70a26b6e5c8bec25e23869846edfdd6728", "0x3cf3e8caea91501321feee0f0692fcd98f1c6292", "0x18822790d7baf2fa6bbca6ad8baa46985abeb81b"]
HTTP RPC
curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"debug_getModifiedAccountsByHash","params":["0x583a02df4222c82d4ffe5d3658d0f7ac233f4dc5de83f6430d74199038b606b6", "0x69833f0fc012dc36be910aa6909f5395cd35136dbeae29ed2170a7d4162a009c"],"id":1}' https://api.baobab.klaytn.net:8651
{"jsonrpc":"2.0","id":1,"result":["0x31b93ca83b5ad17582e886c400667c6f698b8ccd","0xb7fe15c42e66bd71835b07dc6e7daee7729f6235","0xe31a0edb11357dba71377e625fc6174da4ef4321","0x16b11cf9c2186a117b0da38315b42b1eaa03bbe5","0xd3ec3c7e4cad042dbdcb6a7e0fdbc55a92276f12","0xa4e0d726ce51572e66295756ad93206592c43a59","0xf65e07b6626ab43ecea744803fa46bd4a89bfdb6","0xaac56dfe44f9894d4f536cd17acfbc44bf81a843","0x3855407fa65c4c5104648b3a9e495072df62b585","0x61a7cbdd597848494fa85cbb76f9c63ad9c06cad","0xa4845491cb0dad5bd6707a33c02af0d9db435c15","0x026e8f70a26b6e5c8bec25e23869846edfdd6728","0x3cf3e8caea91501321feee0f0692fcd98f1c6292","0x18822790d7baf2fa6bbca6ad8baa46985abeb81b"]}
Returns all accounts that have changed between the two blocks specified by their block numbers. Changes made in
endBlockNum are included, but changes made in startBlockNum are not. If endBlockNum is not given, it returns the accounts modified in the startBlockNum. A change is defined as a difference in nonce, balance, code hash, or storage hash.Client | Method Invocation |
|---|---|
Console | debug.getModifiedAccountsByNumber(startBlockNum, endBlockNum) |
RPC | {"method": "debug_getModifiedAccountsByNumber", "params": [startBlockNum, endBlockNum]} |
Parameters
Name | Type | Description |
|---|---|---|
startBlockNum | int | The first block number of the range to check. |
endBlockNum | int | (optional) The last block number of the range. |
Return Value
Type | Description |
|---|---|
JSON string | The list of addresses modified between the given range. |
Example
Console
> debug.getModifiedAccountsByNumber(171904, 172160)
["0x31b93ca83b5ad17582e886c400667c6f698b8ccd", "0xb7fe15c42e66bd71835b07dc6e7daee7729f6235", "0xe31a0edb11357dba71377e625fc6174da4ef4321", "0x16b11cf9c2186a117b0da38315b42b1eaa03bbe5", "0xd3ec3c7e4cad042dbdcb6a7e0fdbc55a92276f12", "0xa4e0d726ce51572e66295756ad93206592c43a59", "0xf65e07b6626ab43ecea744803fa46bd4a89bfdb6", "0xaac56dfe44f9894d4f536cd17acfbc44bf81a843", "0x3855407fa65c4c5104648b3a9e495072df62b585", "0x61a7cbdd597848494fa85cbb76f9c63ad9c06cad", "0xa4845491cb0dad5bd6707a33c02af0d9db435c15", "0x026e8f70a26b6e5c8bec25e23869846edfdd6728", "0x3cf3e8caea91501321feee0f0692fcd98f1c6292", "0x18822790d7baf2fa6bbca6ad8baa46985abeb81b"]
HTTP RPC
curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"debug_getModifiedAccountsByNumber","params":[171904, 172160],"id":1}' https://api.baobab.klaytn.net:8651
{"jsonrpc":"2.0","id":1,"result":["0x31b93ca83b5ad17582e886c400667c6f698b8ccd","0xb7fe15c42e66bd71835b07dc6e7daee7729f6235","0xe31a0edb11357dba71377e625fc6174da4ef4321","0x16b11cf9c2186a117b0da38315b42b1eaa03bbe5","0xd3ec3c7e4cad042dbdcb6a7e0fdbc55a92276f12","0xa4e0d726ce51572e66295756ad93206592c43a59","0xf65e07b6626ab43ecea744803fa46bd4a89bfdb6","0xaac56dfe44f9894d4f536cd17acfbc44bf81a843","0x3855407fa65c4c5104648b3a9e495072df62b585","0x61a7cbdd597848494fa85cbb76f9c63ad9c06cad","0xa4845491cb0dad5bd6707a33c02af0d9db435c15","0x026e8f70a26b6e5c8bec25e23869846edfdd6728","0x3cf3e8caea91501321feee0f0692fcd98f1c6292","0x18822790d7baf2fa6bbca6ad8baa46985abeb81b"]}
Returns the preimage for a sha3 hash, if known.
Client | Method Invocation |
|---|---|
Console | debug.preimage(hash) |
RPC | {"method": "debug_preimage", "params": [hash]} |
Parameters
Name | Type | Description |
|---|---|---|
hash | string | sha3 hash. |
Return Value
Name | Type | Description |
|---|---|---|
preimage | string | Preimage for a sha3 hash. |
Example
Console
> debug.preimage("0xaf953a2d01f55cfe080c0c94150a60105e8ac3d51153058a1f03dd239dd08586")
"0xdd738d9a7d987a98798123b2322d389470328420bb3d84023a8405a5523cc532235ba325235243242cb9a4758609a8604 ... 98bbd743053d0cbadaaccd4865cc0348685460ada874506ad984506ad80458ad69038fd6f908340fd9af68faf903760"
HTTP RPC
$ curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"debug_preimage","params":["0xaf953a2d01f55cfe080c0c94150a60105e8ac3d51153058a1f03dd239dd08586"],"id":1}' https://api.baobab.klaytn.net:8651
{"jsonrpc":"2.0","id":1,"result":"0xaf953a2d01f55cfe080c0c94150a60105e8ac3d51153058a1f03dd239dd08586")
"0xdd738d9a7d987a98798123b2322d389470328420bb3d84023a8405a5523cc532235ba325235243242cb9a4758609a8604 ... 98bbd743053d0cbadaaccd4865cc0348685460ada874506ad984506ad80458ad69038fd6f908340fd9af68faf903760"}
Returns a list of the last 'bad blocks' that the client has seen on the network.
Client | Method Invocation |
|---|---|
Console | debug.getBadBlocks() |
RPC | {"method": "debug_getBadBlocks", "params": []} |
Parameters
None
Return Value
Name | Type | Description |
|---|---|---|
badBlock | JSON | JSON list of block-hashes |
Example
Console
> debug.getBadBlocks()
[]
HTTP RPC
$ curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"debug_getBadBlocks","params":[],"id":1}' https://api.baobab.klaytn.net:8651
{"jsonrpc":"2.0","id":1,"result":[]}
Retrieves a block and returns its pretty printed form.
Client | Method Invocation |
|---|---|
Console | debug.printBlock(number) |
RPC | {"method": "debug_printBlock", "params": [number]} |
Parameters
Name | Type | Description |
|---|---|---|
block number or hash | QUANTITY | TAG | HASH | Integer or hexadecimal block number, or the string "earliest", "latest" or "pending" as in the default block parameter, or block hash. |
NOTE: In versions earlier than Klaytn v1.7.0, only integer type is available.
Return Value
Type | Description |
|---|---|
string | Dump of a block struct. |
Example
Console
> debug.printBlock(65120)
"(*types.Block)(0xc436fad3b0)(Block(#65120): Size: 2.95 kB {\nMinerHash: 7a5f8d37d34be6d9d19c5f161756d607da62227bb725ddb2f372682d7a9f1445\nHeader(e96d6477acfeba8ba865c315020471dcf751aa1bddca77f469334ab0492d218f):\n[\n\tParentHash: e768b5b7eeb1005fe130c26da744d47e042e9227cee675fa70c89ede38653aea\n\tCoinbase: 0000000000000000000000000000000000000000\n\tRewardbase: 0000000000000000000000000000000000000000\n\tRoot: ... 0xc3be927ae5c0c48a0c83a1dbdf2df737c4a708eb6dae0ccb4a7eb042ea0a6ebf\n\tS: 0x53d8bed6357f88c8bab1f3d83942aa53c14269e58016e284656b12996a5d759a\n\tHex: f863829d9280825208949619a83fcefc5647736cfd28845fcc4f716ff53b8080820fe7a0c3be927ae5c0c48a0c83a1dbdf2df737c4a708eb6dae0ccb4a7eb042ea0a6ebfa053d8bed6357f88c8bab1f3d83942aa53c14269e58016e284656b12996a5d759a\n]\n}\n)\n"
HTTP RPC
$ curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"debug_printBlock","params":[65120],"id":1}' https://api.baobab.klaytn.net:8651
{"jsonrpc":"2.0","id":1,"result":"(*types.Block)(0xc4355b05a0)(Block(#65120): Size: 2.95 kB {\nMinerHash: 7a5f8d37d34be6d9d19c5f161756d607da62227bb725ddb2f372682d7a9f1445\nHeader(e96d6477acfeba8ba865c315020471dcf751aa1bddca77f469334ab0492d218f):\n[\n\tParentHash: e768b5b7eeb1005fe130c26da744d47e042e9227cee675fa70c89ede38653aea\n\tCoinbase: 0000000000000000000000000000000000000000\n\tRewardbase: ... 0000000000000000000000000000000000000000\n\tRoot: 4fd68a8f550cbd9ad665bc1a8021882ced5e1859fd9e28a48cb2910532b6ef27\n\tTxSha: e3dbb8245038adcdc849de54af1d05f0c36c4c20d2710e31d525bd012d20a193\n\tReceiptSha: 212d4f453a897e2a486c86a4b120c1a850e89753865fe7f1aafa4"}
WARNING: This API is not yet implemented and always returns "not yet implemented API" error.Sets the current head of the local chain by block number.
NOTE: This is a destructive action and may severely damage your chain. Use with extreme caution.
Client | Method Invocation |
|---|---|
Console | debug.setHead(number) |
RPC | {"method": "debug_setHead", "params": [number]} |
Parameters
Name | Type | Description |
|---|---|---|
number | string | The block number in hexadecimal string. |
Return Value
None
Example
Console
> debug.setHead("0x100")
null
HTTP RPC
$ curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"debug_setHead","params":["0x100"],"id":1}' https://api.baobab.klaytn.net:8651
{"jsonrpc":"2.0","id":1,"result":null}
Retrieves the seed hash of a block.
Client | Method Invocation |
|---|---|
Console | debug.seedHash(number) |
RPC | {"method": "debug_seedHash", "params": [number]} |
Parameters
Name | Type | Description |
|---|---|---|
number | uint64 | The block number. |
Return Value
Name | Type | Description |
|---|---|---|
seedHash | string | The block seed hash. |
Example
Console
> debug.seedHash(100)
"0x0000000000000000000000000000000000000000000000000000000000000000"
HTTP RPC
$ curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"debug_seedHash","params":[100],"id":1}' https://api.baobab.klaytn.net:8651
{"jsonrpc":"2.0","id":1,"result":"0x0000000000000000000000000000000000000000000000000000000000000000"}
The
startWarmUp iterates the latest state trie to warm-up the trie cache. The iteration will be automatically stopped if 90% of the trie cache is full. The method returns an error if it fails in starting a warm-up, or null if it successfully has started it.Client | Method invocation |
|---|---|
Console | debug.startWarmUp() |
RPC | {"method": "debug_startWarmUp"} |
Parameters
None
Return Value
Type | Description |
|---|---|
Error | null if a warm-up is started, or an error if not. |
Example
Console
> debug.startWarmUp()
null
HTTP RPC
$ curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"debug_startWarmUp","id":1}' https://api.baobab.klaytn.net:8651
{"jsonrpc":"2.0","id":1,"result":null}
The
startContractWarmUp iterates the latest storage trie of the given contract address to warm-up the trie cache. The iteration will be automatically stopped if 90% of the trie cache is full. The method returns an error if it fails in starting a warm-up or the given address is not a contract address, or null if it successfully has started it.Client | Method invocation |
|---|---|
Console | debug.startContractWarmUp(address) |
RPC | {"method": "debug_startContractWarmUp", "params": [address]} |
Parameters
Type | Description |
|---|---|
20-byte DATA | Contract address |
Return Value
Type | Description |
|---|---|
Error | null if a warm-up is started, or an error if not. |
Example
Console
> debug.startContractWarmUp("0xa94f5374fce5edbc8e2a8697c15331677e6ebf0b")
null
HTTP RPC
$ curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"debug_startContractWarmUp", "params":["0xa94f5374fce5edbc8e2a8697c15331677e6ebf0b"], "id":1}' https://api.baobab.klaytn.net:8651
{"jsonrpc":"2.0","id":1,"result":null}
The
stopWarmUp stops the currently running warm-up. This method takes no parameters, and returns null or an error depending on a warm-up was stopped or not.Client | Method invocation |
|---|---|
Console | debug.stopWarmUp() |
RPC | {"method": "stopWarmUp"} |
Parameters
None
Return Value
Type | Description |
|---|---|
Error | null if a warm-up is stopped, or an error if not. |
Example
Console
> debug.stopWarmUp()
true
HTTP RPC
$ curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"debug_stopWarmUp","id":1}' https://api.baobab.klaytn.net:8651
{"jsonrpc":"2.0","id":1,"result":null}
The
startCollectingTrieStats iterates the latest state or storage trie to collect trie statistics. It collects storage trie statistics of the contract in the given address. If an empty address(="0x00...00") is given, it collects statistics of the whole state trie. Statistics will be logged every minute before end, containing overall and depth-by-depth information. The method returns an error if it fails in starting a task, or null if it successfully has started it.Client | Method invocation |
|---|---|
Console | debug.startCollectingTrieStats(address) |
RPC | {"method": "debug_startCollectingTrieStats", "params": [address]} |
Parameters
Type | Description |
|---|---|
20-byte DATA | Contract address |
Return Value
Type | Description |
|---|---|
Error | null if collecting trie statistics task is started, or an error if not. |
Example
Console
// empty address to collect whole state trie statistics
> debug.startCollectingTrieStats("0x0000000000000000000000000000000000000000")
null
// contract address to collect storage trie statistics
> debug.startCollectingTrieStats("0xa94f5374fce5edbc8e2a8697c15331677e6ebf0b")
null
HTTP RPC
$ curl -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"debug_startCollectingTrieStats", "params":["0xa94f5374fce5edbc8e2a8697c15331677e6ebf0b"], "id":1}' https://api.baobab.klaytn.net:8651
{"jsonrpc":"2.0","id":1,"result":null}
Log
INFO[03/10,12:03:12 +09] [5] Started collecting trie statistics blockNum=1491072 root=0x64af12b6374b92f6db457fa1b98fe9522d9f36ba352e3c4e01cdb75f001e8264 len(children)=16
...
INFO[03/10,12:03:12 +09] [5] Finished collecting trie statistics elapsed=95.152412ms numNodes=133036 numLeafNodes=95948 maxDepth=9
INFO[03/10,12:03:12 +09] [5] number of leaf nodes in a depth depth=5 numNodes=22098
INFO[03/10,12:03:12 +09] [5] number of leaf nodes in a depth depth=6 numNodes=65309
INFO[03/10,12:03:12 +09] [5] number of leaf nodes in a depth depth=7 numNodes=8083
INFO[03/10,12:03:12 +09] [5] number of leaf nodes in a depth depth=8 numNodes=456
INFO[03/10,12:03:12 +09] [5] number of leaf nodes in a depth depth=9 numNodes=2
Last modified 2mo ago