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Code Issues Releases Wiki Activity

Moved diagrams to hashes section.

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Eric Lombrozo 2015-12-25 19:17:00 -05:00
parent 0ea5ba232d
commit 0ab3b3eb0c
1 changed files with 9 additions and 6 deletions
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bip-codeshark-segwit-peer-services.mediawiki
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@ -73,8 +73,6 @@ The serialization has the following structure:
| The block number or timestamp until which the transaction is locked
|}
<img src=bip-codeshark-segwit-peer-services/witnesstx.png></img>
Parsers supporting this BIP will be able to distinguish between the old serialization format (without the witnesses) and this one. The marker byte is set to zero so that this structure will never parse as a valid transaction in a parser that does not support this BIP. If parsing were to succeeded, such a transaction would contain no inputs and a single output.
If all witnesses are empty, the old serialization format should be used.
@ -112,10 +110,15 @@ implicitly, every transaction and block have a witness, old ones just
have empty ones.
=== Hashes ===
Transaction hashes used in the transaction merkle tree and txin outpoints is always computed on the old non-witness
serialization. A new hash including the witness data is added that is
computed from the witness-serialization (this means that transactions
with an empty witness have witness hash equal to normal hash).
Transaction hashes used in the transaction merkle tree and txin outpoints are always computed using the old non-witness
serialization.
Support for a new hash including the witness data is added that is
computed from the new witness serialization. (Note that transactions
with an empty witness always use the old serialization,
and therefore, they have witness hash equal to normal hash.)
<img src=bip-codeshark-segwit-peer-services/witnesstx.png></img>
== Credits ==
Special thanks to Gregory Maxwell for originating many of the ideas in this BIP and Luke-Jr for figuring out how to deploy this as a soft fork.