diff options
Diffstat (limited to 'bip-0370.mediawiki')
| -rw-r--r-- | bip-0370.mediawiki | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/bip-0370.mediawiki b/bip-0370.mediawiki index 11b3125..98f1800 100644 --- a/bip-0370.mediawiki +++ b/bip-0370.mediawiki @@ -2,7 +2,7 @@ BIP: 370 Layer: Applications Title: PSBT Version 2 - Author: Andrew Chow <achow101@gmail.com> + Author: Ava Chow <me@achow101.com> Comments-Summary: No comments yet. Comments-URI: https://github.com/bitcoin/bips/wiki/Comments:BIP-0370 Status: Draft @@ -62,7 +62,7 @@ The new global types for PSBT Version 2 are as follows: | <tt>PSBT_GLOBAL_TX_VERSION = 0x02</tt> | None | No key data -| <tt><32-bit little endian uint version></tt> +| <tt><32-bit little endian int version></tt> | The 32-bit little endian signed integer representing the version number of the transaction being created. Note that this is not the same as the PSBT version number specified by the PSBT_GLOBAL_VERSION field. | 2 | 0 @@ -235,9 +235,9 @@ PSBTv2 introduces new roles and modifies some existing roles. ===Creator=== In PSBTv2, the Creator initializes the PSBT with 0 inputs and 0 outputs. -The PSBT version number is set to 2. The transaction version number must be set to at least 2. <ref>'''Why does the transaction version number need to be at least 2?''' The transaction version number is part of the validation rules for some features such as OP_CHECKSEQUENCEVERIFY. Since it is backwards compatible, and there are other ways to disable those features (e.g. through sequence numbers), it is easier to require transactions be able to support these features than to try to negotiate the transaction version number.</ref> +The PSBT version number is set to 2. The Creator should also set PSBT_GLOBAL_FALLBACK_LOCKTIME. -If the Creator is not also a Constructor and will be giving the PSBT to others to add inputs and outputs, the PSBT_GLOBAL_TX_MODIFIABLE field must be present and and the Inputs Modifiable and Outputs Modifiable flags set appropriately. +If the Creator is not also a Constructor and will be giving the PSBT to others to add inputs and outputs, the PSBT_GLOBAL_TX_MODIFIABLE field must be present and the Inputs Modifiable and Outputs Modifiable flags set appropriately; moreover, the transaction version number must be set to at least 2. <ref>'''Why does the transaction version number need to be at least 2?''' The transaction version number is part of the validation rules for some features such as OP_CHECKSEQUENCEVERIFY. Since it is backwards compatible, and there are other ways to disable those features (e.g. through sequence numbers), it is easier to require transactions be able to support these features than to try to negotiate the transaction version number.</ref> If the Creator is a Constructor and no inputs and outputs will be added by other entities, PSBT_GLOBAL_TX_MODIFIABLE may be omitted. ===Constructor=== @@ -248,7 +248,7 @@ Before any input or output may be added, the constructor must check the PSBT_GLO Inputs may only be added if the Inputs Modifiable flag is True. Outputs may only be added if the Outputs Modifiable flag is True. -When an input or output is added, the corresponding PSBT_GLOBAL_INPUT_COUNT or PSBT_GLOBAL_OUTPUT_COUNT must be incremeted to reflect the number of inputs and outputs in the PSBT. +When an input or output is added, the corresponding PSBT_GLOBAL_INPUT_COUNT or PSBT_GLOBAL_OUTPUT_COUNT must be incremented to reflect the number of inputs and outputs in the PSBT. When an input is added, it must have PSBT_IN_PREVIOUS_TXID and PSBT_IN_OUTPUT_INDEX set. When an output is added, it must have PSBT_OUT_VALUE and PSBT_OUT_OUTPUT_SCRIPT set. If the input has a required timelock, Constructors must set the requisite timelock field. @@ -288,7 +288,7 @@ The Extractor should produce a fully valid, network serialized transaction if al ==Backwards Compatibility== -PSBTv2 shares the same gemeric format as PSBTv0 as defined in BIP 174. Parsers for PSBTv0 should +PSBTv2 shares the same generic format as PSBTv0 as defined in BIP 174. Parsers for PSBTv0 should be able to deserialize PSBTv2 with only changes to support the new fields. However PSBTv2 is incompatible with PSBTv0, and vice versa due to the use of the PSBT_GLOBAL_VERSION. |