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Dev Docs: drop mention of endianness in hash byte order

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Closes #1061
Closes #1102
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David A. Harding 2015-10-23 10:03:09 -04:00
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9
_includes/devdoc/bitcoin-core/api-intro.md
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@ -43,20 +43,13 @@ target. Whatever the reason for reversing header hashes, the reversal
also extends to other hashes used in RPCs, such as TXIDs and merkle also extends to other hashes used in RPCs, such as TXIDs and merkle
roots. roots.
Off-site documentation such as the Bitcoin Wiki tends to use the terms
big endian and little endian as shown in the table below, but they
aren't always consistent. Worse, these two different ways of
representing a hash digest can confuse anyone who looks at the Bitcoin
Core source code and finds a so-called "big endian" value being stored
in a little-endian data type.
As header hashes and TXIDs are widely used as global identifiers in As header hashes and TXIDs are widely used as global identifiers in
other Bitcoin software, this reversal of hashes has become the standard other Bitcoin software, this reversal of hashes has become the standard
way to refer to certain objects. The table below should make clear where way to refer to certain objects. The table below should make clear where
each byte order is used. each byte order is used.
|---------------+---------------------|-----------------| |---------------+---------------------|-----------------|
| Data | Internal Byte Order ("Big Endian") | RPC Byte Order ("Little Endian") | | Data | Internal Byte Order | RPC Byte Order |
|---------------|---------------------|-----------------| |---------------|---------------------|-----------------|
| Example: SHA256(SHA256(0x00)) | Hash: 1406...539a | Hash: 9a53...0614 | | Example: SHA256(SHA256(0x00)) | Hash: 1406...539a | Hash: 9a53...0614 |
|---------------|---------------------|-----------------| |---------------|---------------------|-----------------|