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anchors: follow up changes after initial zero fee anchors merge (#903)

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We can remove references to anchors in a few places, and you need
static key in order to support it, so that reference is redundant.
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Olaoluwa Osuntokun 2022-01-04 00:26:43 -08:00 • committed by GitHub
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2 changed files with 4 additions and 5 deletions
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7
02-peer-protocol.md
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@ -458,7 +458,7 @@ use `option_static_remotekey`, `option_anchor_outputs` or
`option_anchors_zero_fee_htlc_tx` is considered superior to `option_anchors_zero_fee_htlc_tx` is considered superior to
`option_anchor_outputs`, which again is considered superior to `option_anchor_outputs`, which again is considered superior to
`option_static_remotekey`, and the superior one is is favored if more than one `option_static_remotekey`, and the superior one is favored if more than one
is negotiated. is negotiated.
### The `funding_locked` Message ### The `funding_locked` Message
@ -1352,7 +1352,7 @@ The sending node:
next `commitment_signed` it expects to receive. next `commitment_signed` it expects to receive.
- MUST set `next_revocation_number` to the commitment number of the - MUST set `next_revocation_number` to the commitment number of the
next `revoke_and_ack` message it expects to receive. next `revoke_and_ack` message it expects to receive.
- if `option_static_remotekey` or `option_anchors` applies to the commitment - if `option_static_remotekey` applies to the commitment
transaction: transaction:
- MUST set `my_current_per_commitment_point` to a valid point. - MUST set `my_current_per_commitment_point` to a valid point.
- otherwise: - otherwise:
@ -1400,8 +1400,7 @@ A node:
- SHOULD send an `error` and fail the channel. - SHOULD send an `error` and fail the channel.
A receiving node: A receiving node:
- if `option_static_remotekey` or `option_anchors` applies to the commitment - if `option_static_remotekey` applies to the commitment transaction:
transaction:
- if `next_revocation_number` is greater than expected above, AND - if `next_revocation_number` is greater than expected above, AND
`your_last_per_commitment_secret` is correct for that `your_last_per_commitment_secret` is correct for that
`next_revocation_number` minus 1: `next_revocation_number` minus 1:

2
09-features.md
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@ -39,7 +39,7 @@ The Context column decodes as follows:
| 16/17 | `basic_mpp` | Node can receive basic multi-part payments | IN9 | `payment_secret` | [BOLT #4][bolt04-mpp] | | 16/17 | `basic_mpp` | Node can receive basic multi-part payments | IN9 | `payment_secret` | [BOLT #4][bolt04-mpp] |
| 18/19 | `option_support_large_channel` | Can create large channels | IN | | [BOLT #2](02-peer-protocol.md#the-open_channel-message) | | 18/19 | `option_support_large_channel` | Can create large channels | IN | | [BOLT #2](02-peer-protocol.md#the-open_channel-message) |
| 20/21 | `option_anchor_outputs` | Anchor outputs | IN | `option_static_remotekey` | [BOLT #3](03-transactions.md) | | 20/21 | `option_anchor_outputs` | Anchor outputs | IN | `option_static_remotekey` | [BOLT #3](03-transactions.md) |
| 22/23 | `option_anchors_zero_fee_htlc_tx` | Anchor commitment type with zero fee HTLC transactions | IN | | [BOLT #3][bolt03-htlc-tx], [lightning-dev][ml-sighash-single-harmful]| | 22/23 | `option_anchors_zero_fee_htlc_tx` | Anchor commitment type with zero fee HTLC transactions | IN | `option_static_remotekey` | [BOLT #3][bolt03-htlc-tx], [lightning-dev][ml-sighash-single-harmful]|
| 26/27 | `option_shutdown_anysegwit` | Future segwit versions allowed in `shutdown` | IN | | [BOLT #2][bolt02-shutdown] | | 26/27 | `option_shutdown_anysegwit` | Future segwit versions allowed in `shutdown` | IN | | [BOLT #2][bolt02-shutdown] |
| 44/45 | `option_channel_type` | Node supports the `channel_type` field in open/accept | IN | | [BOLT #2](02-peer-protocol.md#the-open_channel-message) | | 44/45 | `option_channel_type` | Node supports the `channel_type` field in open/accept | IN | | [BOLT #2](02-peer-protocol.md#the-open_channel-message) |
| 48/49 | `option_payment_metadata` | Payment metadata in tlv record | 9 | | [BOLT #11](11-payment-encoding.md#tagged-fields) | 48/49 | `option_payment_metadata` | Payment metadata in tlv record | 9 | | [BOLT #11](11-payment-encoding.md#tagged-fields)