fa3e0da06b policy: Treat taproot as always active (MarcoFalke)
Pull request description:
Now that taproot is active, it can be treated as if it was always active for policy for the next major release. This simplifies the code and changes two things:
* Importing `tr` descriptors can be done before the chain is fully synced. This is fine, because the wallet will already generate `tr` descriptors by default (regardless of the taproot status) after commit 47fe7445e7.
* Valid taproot spends won't be rejected from the mempool before taproot is active. This is strictly speaking a bugfix after commit 47fe7445e7, since the wallet may generate taproot spends before the chain is fully synced. For example, a slow node or a purposefully offline node. Currently, the wallet needs the mempool to account for change. See https://github.com/bitcoin/bitcoin/issues/11887.
A similar change was done for segwit v0 in https://github.com/bitcoin/bitcoin/pull/13120 .
This effectively reverts commit c5ec0367d7.
ACKs for top commit:
mjdietzx:
Code Review ACK fa3e0da06b
achow101:
ACK fa3e0da06b
sipa:
utACK fa3e0da06b
gruve-p:
ACK fa3e0da06b
gunar:
Code Review + tACK fa3e0da06
rajarshimaitra:
code review + tACK fa3e0da06b
Tree-SHA512: c6dc7a4e6c345bdec33f256847dc63906ab1696aa683ab9b32a79e715613950884ac3a1a7a44e95f31bb28e58dd64679a616175f7e152b21f5550f3337c8e622
754f134a50 wallet: Add error message to GetReservedDestination (Andrew Chow)
87a0e7a3b7 Disallow bech32m addresses for legacy wallet things (Andrew Chow)
6dbe4d1072 Use BECH32M for tr() desc, WitV1Taproot, and WitUnknown CTxDests (Andrew Chow)
699dfcd8ad Opportunistically use bech32m change addresses if available (Andrew Chow)
0262536c34 Add OutputType::BECH32M (Andrew Chow)
177c15d2f7 Limit LegacyScriptPubKeyMan address types (Andrew Chow)
Pull request description:
Currently bech32m addresses are classfied as bech32. Because bech32m is incompatible with bech32, we need to define a new `OutputType` for it so that it can be handled correctly. This PR adds `OutputType::BECH32M`, updates all of the relevant `OutputType` classifications, and handle requests for bech32m addresses. There is now a `bech32m` address type string that can be used.
* `tr()` descriptors now report their output type as `OutputType::BECH32M`. `WtinessV1Taproot` and `WitnessUnknown` are also classified as `OutputType::BECH32M`.
* Bech32m addresses are completely disabled for legacy wallets. They cannot be imported (explicitly disallowed in `importaddress` and `importmulti`), will not be created when getting all destinations for a pubkey, and will not be added with `addmultisigaddress`. Additional protections have been added to `LegacyScriptPubKeyMan` to disallow attempting to retrieve bech32m addresses.
* Since Taproot multisigs are not implemented yet, `createmultisig` will also disallow the bech32m address type.
* As Taproot is not yet active, `DescriptorScriptPubKeyMan` cannot and will not create a `tr()` descriptor. Protections have been added to make sure this cannot occur.
* The change address type detection algorithm has been updated to return `bech32m` when there is a segwit v1+ output script and the wallet has a bech32m `ScriptPubKeyMan`, falling back to bech32 if one is not available.
ACKs for top commit:
laanwj:
re-review ACK 754f134a50
Sjors:
re-utACK 754f134: only change is switching to `bech32m` in two `wallet_taproot.py` test cases.
fjahr:
re-ACK 754f134a50
jonatack:
ACK 754f134a50
Tree-SHA512: 6ea90867d3631d0d438e2b08ce6ed930f37d01323224661e8e38f183ea5ee2ab65b5891394a3612c7382a1aff907b457616c6725665a10c320174017b998ca9f
MarcoFalke