rust-bitcoin

build(deps): bump actions/upload-artifact from 6.0.0 to 7.0.1

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 6.0.0 to 7.0.1.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](https://github.com/actions/upload-artifact/compare/b7c566a772e6b6bfb58ed0dc250532a479d7789f...043fb46d1a93c77aae656e7c1c64a875d1fc6a0a)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
dependency-version: 7.0.1
dependency-type: direct:production
update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

build(deps): bump actions/labeler from 6.0.1 to 6.1.0

Bumps [actions/labeler](https://github.com/actions/labeler) from 6.0.1 to 6.1.0.
- [Release notes](https://github.com/actions/labeler/releases)
- [Commits](https://github.com/actions/labeler/compare/634933edcd8ababfe52f92936142cc22ac488b1b...f27b608878404679385c85cfa523b85ccb86e213)

---
updated-dependencies:
- dependency-name: actions/labeler
dependency-version: 6.1.0
dependency-type: direct:production
update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

build(deps): bump peter-evans/create-pull-request from 7.0.8 to 8.1.1

Bumps [peter-evans/create-pull-request](https://github.com/peter-evans/create-pull-request) from 7.0.8 to 8.1.1.
- [Release notes](https://github.com/peter-evans/create-pull-request/releases)
- [Commits](https://github.com/peter-evans/create-pull-request/compare/271a8d0340265f705b14b6d32b9829c1cb33d45e...5f6978faf089d4d20b00c7766989d076bb2fc7f1)

---
updated-dependencies:
- dependency-name: peter-evans/create-pull-request
dependency-version: 8.1.1
dependency-type: direct:production
update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Replace use of as_str().len() with .len()

With the new .len() function, the previous .as_str().len() use in the
address tests can now be shortened to a single .len() call instead.

Replace encoded.as_str().len() with encoded.len() in
base58_invalid_payload_length_reports_decoded_size test in address
module.

Add len and is_empty to Base58CkString

The Base58CkString type is essentially treated like a string in some
cases. While users can cast to a &str with as_str, it is convenient to
instead provide len and is_empty functions for the user.

Add len and is_empty methods to the Base58CkString type.

internals: Bump version to 0.6.0

In preparation for release add a changelog, bump the version, and
update the lock files.

2026-07-12 automated rustfmt nightly

ci: update LTS branches for toolchain and kani crons

Update API files

Move builder script functions to primitives

The builder function on ScriptExt and ScriptBufExt provides a shorthand
way to get a builder for a script type. With the Builder type moved to
primitives, this function can now also be moved.

Move builder functions from ScriptExt and ScriptBufExt to Script<T> and
ScriptBuf<T> respectively.

Replace uses of Encoder2 with prefixed encoders

Throughout the code, there are myriad instances of
Encoder2<CompactSizeEncoder, Bytes/SliceEncoder> used to encode a length
prefixed element vector or byte slice. With the new prefixed encoders
these can all be replaced with the PrefixedBytes/SliceEncoder types.

Replace uses of Encoder2<CompactSizeEncoder, Bytes/SliceEncoder> with
the corresponding PrefixedBytes/SliceEncoder type.

Update API files

Add tests to cover the new length prefixed encoders

In order to cover mutants in the new PrefixedBytesEncoder and
PrefixedSliceEncoders, new tests will be needed. These also
help to prevent regressions if changes are made later.

Introduce tests to cover the new Prefixed encoder functionality.

Add new prefixed encoders for BytesEncoder and SliceEncoder

The SliceEncoder and BytesEncoder types both encode variable length
slices of data without a length prefix. Currently, the code suggests
using Encoder2 for length prefixes, but this bloats types and encoder
initialisation for a common use-case. Instead, we should provide
encoders that automatically calculate and encode the length prefix as
a compact size.

Introduce PrefixedBytesEncoder and PrefixedSliceEncoder types that
mirror BytesEncoder and SliceEncoder but include length prefixes.

units: Remove incorrect code comment

In #6384 we change `<=` to `<`. While reviewing I thought this change
was incorrect at the time. After deeper consideration I see my confusion.

However the code comment added in the linked PR is definitely
incorrect and contradicts the rustdoc comments on the function.

`time` is the MTP of the chain tip. This is what the rustdocs say and
it is also what is stated in `validation.cpp` in Core:

// BIP113 requires that time-locked transactions have nLockTime set to
// less than the median time of the previous block they're contained in.
// When the next block is created its previous block will be the current
// chain tip, so we use that to calculate the median time passed to
// IsFinalTx().
const int64_t nBlockTime{active_chain_tip.GetMedianTimePast()};

return IsFinalTx(tx, nBlockHeight, nBlockTime);

`IsFinalTx` contains the equivalent lock time check that
`is_satisfied_by` calculates. This is exactly why we changed to use
`<` to match that function:

```
bool IsFinalTx(const CTransaction &tx, int nBlockHeight, int64_t nBlockTime)
{
if (tx.nLockTime == 0)
return true;
if ((int64_t)tx.nLockTime < ((int64_t)tx.nLockTime < LOCKTIME_THRESHOLD ? (int64_t)nBlockHeight : nBlockTime))
return true;
```

Remove the code comment.

units: Fix changelog 0.5.0 link

Fix typo in link.

Remove hex dep from internals

The `hex` dep is no longer used in `internals` (since #6339).

Remove it.

docs: root readme cleanup

* PSBT has moved to the rust-psbt crate.
* The CI badges are not helpful when viewed from things like crates.io,
we have detection jobs now for maintainers for stuff like kani.
* Update deprecated library json rpc library.
* Update changelog links to work from anywhere. Also add missing crates.

docs: update LTS versions and expand on policy

Replace external uses of base58 encoding with Base58CkString

Before the old encoding functions can be removed, all uses from outside
the crate need to be replaced with the equivalent calls from the new
Base58CkString type.

Replace all uses of encode_check and encode_check_to_fmt with equivalent
Base58CkString uses.

Remove unused old encoding functions

With the introduction of the Base58CkString type, the old encoding
functions can now be completely removed.

Remove encode, encode_check and encode_check_to_fmt, alongside the
accompanying private functions.

Adjust crate level docs

Replace encode with checksum encoding in tests

The new Base58CkString type only performs base58check encoding, not the
non-checksum type encoding. As such, it has no replacement for the old
encode function. In order to confirm the same functionality (leading
zeros, >128 chars, etc), the uses of encode can be replaced by
equivalent base58check strings in the tests.

Replace encode usage in test cases with equivalent base58check encoded
strings and encoding calls.

Gate alloc-only decoding errors

The errors used for decoding are currently alloc-only, but are exported
even for no-alloc builds. These should be gated the same as the
functionality that uses them.

Gate Error, IncorrectChecksumError, TooShortError and
InvalidCharacterError behind alloc.

Replace encode_check with Base58CkString in tests and benchmarks

The encode_check function is used for base58check encoding under the
old function API. With the introduction of the Base58CkString type,
base58check encoding is now done through Base58CkString::encode or
encode_unbounded.

Replace encode_check uses in tests and benchmarks with
Base58CkString::encode_unbounded.