ian

submit_block

GET_BLOCK_TEMPLATE

{"bytes_limit":"0x91c08","cellbase":{"cycles":null,"data":{"cell_deps":[],"header_deps":[],"inputs":[{"previous_output":{"index":"0xffffffff","tx_hash":"0x0000000000000000000000000000000000000000000000000000000000000000"},"since":"0x51b5"}],"outputs":[{"capacity":"0x3dfc9dcd68","lock":{"args":"0xb2e61ff569acf041b3c2c17724e2379c581eeac3","code_hash":"0x9bd7e06f3ecf4be0f2fcd2188b23f1b9fcc88e5d4b65a8637b17723bbda3cce8","hash_type":"type"},"type":null}],"outputs_data":["0x"],"version":"0x0","witnesses":["0x590000000c00000055000000490000001000000030000000310000009bd7e06f3ecf4be0f2fcd2188b23f1b9fcc88e5d4b65a8637b17723bbda3cce8011400000048b12c67274f56be27ccf4920402e16cd401c71c00000000"]},"hash":"0x47ad3afa5e8cb070929b92c9bbec5a76076bea8ce40494bef9a28233faf05691"},"compact_target":"0x1d722992","current_time":"0x16e67721478","cycles_limit":"0x2540be400","dao":"0x6180438021b5630054f3c3099883260012d1aa0131ef05000036d94c26860b00","epoch":"0x2eb012a00001f","number":"0x51b5","parent_hash":"0x097048451c099f846f2c4d19b79360cd9fe54b415496b454e008748bed493e8b","proposals":[],"raw":"0x000000009229721d8d0072676e010000b5510000000000001f00002a01eb0200097048451c099f846f2c4d19b79360cd9fe54b415496b454e008748bed493e8b0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000006180438021b5630054f3c3099883260012d1aa0131ef05000036d94c26860b00","transactions":[],"uncles":[],"uncles_count_limit":"0x2","version":"0x0","work_id":"0x1"}


POW

extraNonce2:0000000000000002a9df0189
nonceBuf:000000010000000000000002a9df0189
(not used currently.. tried this) nonceBigNum (LE,auto) base10:182113964086912058668270381438167154688
(not used currently.. tried this) nonceBigNum (LE,auto) baase16:8901dfa9020000000000000001000000
HSPACE:010000000000000000000000000000000000000000000000000000000000000000
blockCompactDiff:494021010
blockTgt:3077811784929926005267193015430431727813141032940143402072250542718976
blockDiff: 37621562
headerHash:26b720beb675ea36c1042993cdd51f40c5ff1479588e583eafd984119e26bc69
headerHashWithNonce:26b720beb675ea36c1042993cdd51f40c5ff1479588e583eafd984119e26bc69000000010000000000000002a9df0189
powHash(eaglesonog):000000009d2125a3f0dd2afa7c8d4fd08dec2f429bd00a99f472d44cbcdad873
powBigNum:9d2125a3f0dd2afa7c8d4fd08dec2f429bd00a99f472d44cbcdad873
shareDiff:6997487827


RAW HEADER
 000000009229721d8d0072676e010000b5510000000000001f00002a01eb0200097048451c099f846f2c4d19b79360cd9fe54b415496b454e008748bed493e8b0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000006180438021b5630054f3c3099883260012d1aa0131ef05000036d94c26860b00


SUBMIT_BLOCK
arg[0]:0x1
args[1]:{"header":{"compact_target":"0x1d722992","dao":"0x6180438021b5630054f3c3099883260012d1aa0131ef05000036d94c26860b00","epoch":"0x2eb012a00001f","nonce":"0x10000000000000002a9df0189","number":"0x51b5","parent_hash":"0x097048451c099f846f2c4d19b79360cd9fe54b415496b454e008748bed493e8b","proposals_hash":"0x0000000000000000000000000000000000000000000000000000000000000000","timestamp":"0x16e6772008d","transactions_root":"0x0000000000000000000000000000000000000000000000000000000000000000","uncles_hash":"0x0000000000000000000000000000000000000000000000000000000000000000","version":"0x0"},"proposals":[],"transactions":[{"cell_deps":[],"header_deps":[],"inputs":[{"previous_output":{"index":"0xffffffff","tx_hash":"0x0000000000000000000000000000000000000000000000000000000000000000"},"since":"0x51b5"}],"outputs":[{"capacity":"0x3dfc9dcd68","lock":{"args":"0xb2e61ff569acf041b3c2c17724e2379c581eeac3","code_hash":"0x9bd7e06f3ecf4be0f2fcd2188b23f1b9fcc88e5d4b65a8637b17723bbda3cce8","hash_type":"type"},"type":null}],"outputs_data":["0x"],"version":"0x0","witnesses":["0x590000000c00000055000000490000001000000030000000310000009bd7e06f3ecf4be0f2fcd2188b23f1b9fcc88e5d4b65a8637b17723bbda3cce8011400000048b12c67274f56be27ccf4920402e16cd401c71c00000000"]}],"uncles":[]}

ERROR [1573693559859] (21491 on ice-devlab): ckb submit_block error 0 when submitting block with submit_block {"code":-3,"message":"Header(Pow(InvalidNonce))"}

It's OK to just use the one returned from block template. The miner also can use the latest time, but ensure use the same time in both raw header and the submit block request.

There's two rules related to timestamp:

• A block timestamp has to be larger than the median of the timestamp in the previous 37 blocks.
• CKB node will hold a block if the block timestamp is more than 15 seconds in the future.

The time returned by get_block_template have already ensure the timestamp can pass the two rules.

Can you also tell me the proper source of transactions_root?

We define blake256 as blake2b with personal ckb-default-hash and output size 256 bits.

|| denotes bytes concatenation.

transactions_root = blake256( transaction hashes CBMT root || transaction witness hashes CBMT root)

• transaction hashes CBMT is the root of a CBMT which nodes are the hashes of all the transactions in the block, and the merge function is blake256(left || right)
• transaction witness hashes CBMT root is also a CBMT, but the nodes are the witness hashes of all the transactions.

A transaction hash is blake256(serialized RawTransaction) and transaction witness hash is blake256(serialized Transaction).