diff options
Diffstat (limited to 'bip-0158.mediawiki')
| -rw-r--r-- | bip-0158.mediawiki | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/bip-0158.mediawiki b/bip-0158.mediawiki index ce4a4af..054aa1f 100644 --- a/bip-0158.mediawiki +++ b/bip-0158.mediawiki @@ -273,10 +273,8 @@ This BIP defines one initial filter type: The basic filter is designed to contain everything that a light client needs to sync a regular Bitcoin wallet. A basic filter MUST contain exactly the following items for each transaction in a block: -* The previous output script (the script being spent) for each input, except - for the coinbase transaction. -* The scriptPubKey of each output, aside from all <code>OP_RETURN</code> output - scripts. +* The previous output script (the script being spent) for each input, except for the coinbase transaction. +* The scriptPubKey of each output, aside from all <code>OP_RETURN</code> output scripts. Any "nil" items MUST NOT be included into the final set of filter elements. @@ -299,9 +297,9 @@ one is able to select <code>P</code> and <code>M</code> independently, then setting <code>M=1.497137 * 2^P</code> is close to optimal <ref>https://gist.github.com/sipa/576d5f09c3b86c3b1b75598d799fc845</ref>. -Empirical analysis also shows that was chosen as these parameters minimize the -bandwidth utilized, considering both the expected number of blocks downloaded -due to false positives and the size of the filters themselves. +Empirical analysis also shows that these parameters minimize the bandwidth +utilized, considering both the expected number of blocks downloaded due to false +positives and the size of the filters themselves. The parameter <code>k</code> MUST be set to the first 16 bytes of the hash (in standard little-endian representation) of the block for which the filter is @@ -314,6 +312,8 @@ complete serialization of a filter is: * <code>N</code>, encoded as a <code>CompactSize</code> * The bytes of the compressed filter itself +A zero element filter MUST be written as one byte containing zeroes. + ==== Signaling ==== This BIP allocates a new service bit: |