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| author | Luke Dashjr <luke-jr+git@utopios.org> | 2016-03-30 21:43:36 +0000 |
|---|---|---|
| committer | Luke Dashjr <luke-jr+git@utopios.org> | 2016-03-30 22:46:18 +0000 |
| commit | a5447e0c4b219acbbc1e09ccd9419e8dff94f1e8 (patch) | |
| tree | 85b743010130f13302cb2f873554d94589e5dd8c | |
| parent | ba16f16742f841461b045ba3ad1cbc04694bcb97 (diff) | |
| download | bips-a5447e0c4b219acbbc1e09ccd9419e8dff94f1e8.tar.xz | |
BIP 141 & 145: Clarify sigop interaction
| -rw-r--r-- | bip-0141.mediawiki | 6 | ||||
| -rw-r--r-- | bip-0145.mediawiki | 6 |
2 files changed, 8 insertions, 4 deletions
diff --git a/bip-0141.mediawiki b/bip-0141.mediawiki index 12b0eba..543e5a2 100644 --- a/bip-0141.mediawiki +++ b/bip-0141.mediawiki @@ -114,9 +114,11 @@ The new rule is total ''block cost'' ≤ 4,000,000. Sigops per block is currently limited to 20,000. We change this restriction as follows: -''Sigop cost'' is defined. The cost of a sigop in traditional script is 4, while the cost of a sigop in witness program is 1. +Sigops in the current pubkey script, signature script, and P2SH check script are counted at 4 times their previous value. +The sigop limit is likewise quadrupled to ≤ 80,000. -The new rule is total ''sigop cost'' ≤ 80,000. +In addition, opcodes within the witness program are counted identical to as previously within the P2SH check script. +That is, CHECKSIG is counted as only 1 sigop in a witness program, despite P2SH check script's CHECKSIG becoming 4 sigops with the forementioned change. == Examples == diff --git a/bip-0145.mediawiki b/bip-0145.mediawiki index b90725e..712e422 100644 --- a/bip-0145.mediawiki +++ b/bip-0145.mediawiki @@ -24,8 +24,6 @@ The template Object is revised to include these keys: |- | costlimit || {{No}} || Number || total cost allowed in blocks |- -| sigoplimit || {{No}} || Number || total sigop cost allowed in blocks divided by 4 -|- | version || {{Yes}} || Number || block version; clients MUST understand the implications of the version they use (eg, comply with [[bip-0141.mediawiki|BIP 141]] for version 5) |} @@ -47,6 +45,10 @@ The Objects listed in the response's "transactions" key is revised to include th Transactions with witness data may only be included if the template's block version is at least 5. +===Sigops=== + +For version 5 blocks, the "sigoplimit" and "sigops" keys must use the new values as calculated in [[bip-0141.mediawiki#Sigops|BIP 141]]. + ===Block Assembly with Witness Transactions=== When block assembly is done without witness transactions, no changes are made by this BIP, and it should be assembled as previously. |