diff --git a/_posts/en/newsletters/2024-09-20-newsletter.md b/_posts/en/newsletters/2024-09-20-newsletter.md new file mode 100644 index 0000000000..5725216bf2 --- /dev/null +++ b/_posts/en/newsletters/2024-09-20-newsletter.md @@ -0,0 +1,244 @@ +--- +title: 'Bitcoin Optech Newsletter #321' +permalink: /en/newsletters/2024/09/20/ +name: 2024-09-20-newsletter +slug: 2024-09-20-newsletter +type: newsletter +layout: newsletter +lang: en +--- +This week's newsletter links to a proof-of-concept implementation for +proving in zero-knowledge that an output is part of the UTXO set, +describes one new and two previous proposals for allowing offline LN +payments, and summarizes research about DNS seeding for non-IP network +addresses. Also included are our regular sections describing changes to +clients and services, announcing new releases and release candidates, +and summarizing notable changes to popular Bitcoin infrastructure +software. + +## News + +- **Proving UTXO set inclusion in zero knowledge:** Johan Halseth + [posted][halseth utxozk] to Delving Bitcoin to announce a + proof-of-concept tool that allows someone to prove that they control + one of the outputs in the current UTXO set without revealing which + output. The eventual goal is to allow the co-owners of an LN funding + output to prove they control a channel without revealing any specific + information about their onchain transactions. That proof can be + attached to next-generation [channel announcement messages][topic + channel announcements] that are used to build decentralized routing + information for LN. + + The method used differs from the aut-ct method described in + [Newsletter #303][news303 aut-ct], and some of the discussion focused + on clarifying the differences. Additional research is needed, with + Halseth describing several open problems. + +- **LN offline payments:** Andy Schroder [posted][schroder lnoff] to + Delving Bitcoin to sketch a communication process an LN wallet could + use to generate tokens that could be provided to an internet-connected + wallet in order to pay it. For example, Alice's wallet would normally + be connected to an always-online LN node she controls or that is + controlled by a _Lightning service provider_ (LSP). While online, + Alice will pregenerate authentication tokens. + + Later, when Alice's node is offline and she wants to pay Bob, she + gives Bob an authentication token that allows him to connect to her + always-online node or LSP and withdraw an amount indicated by Alice. + She can provide the authentication token to Bob using [NFC][] or + another widely available data transfer protocol that doesn't require + Alice to access the internet, keeping the protocol simple and making + it easy to implement on devices with limited computing resources (such as + smart cards). + + Developer ZmnSCPxj [mentioned][zmn lnoff] an alternative approach he + had previously described and Bastien Teinurier [referenced][t-bast + lnoff] a method for node remote control he designed for this type of + situation (see [Newsletter #271][news271 noderc]). + +- **DNS seeding for non-IP addresses:** developer Virtu [posted][virtu seed] + to Delving Bitcoin a survey of the availability of seed nodes on + [anonymity networks][topic anonymity networks] and discussed methods + for allowing new nodes that exclusively use those networks to learn + about peers through DNS seeders. + + As background, a Bitcoin node or P2P client needs to learn the + network addresses of peers that it can download data from. Newly + installed software, or software that has been offline for a long time, + may not know the network address of any active peers. Normally, + Bitcoin Core nodes solve this by querying a DNS seed that returns the + IPv4 or IPv6 addresses of several peers that are likely to be + available. If DNS seeding fails, or if it's unavailable (such as for + anonymity networks that don't use IPv4 or IPv6 addresses), Bitcoin + Core includes the network addresses of peers that were available when + the software release was made; those peers are used as _seed nodes_, + where the node requests additional peer addresses from the seed node + and uses them as potential peers. DNS seeds are preferred over seed nodes + as their information is usually more current and the global DNS + caching infrastructure can prevent a DNS seed from learning the + network address of each querying node. + + Virtu examined the seed nodes listed in the last four major + releases of Bitcoin Core and found that a satisfactory number of them + were still available, indicating that users of anonymity networks + should be able to find peers. They and other discussion participants + also examined the possibility of modifying Bitcoin Core to allow it to + use DNS seeding for anonymity networks via either DNS `NULL` records + or encoding alternative network addresses into pseudo-IPv6 addresses. + +## Changes to services and client software + +*In this monthly feature, we highlight interesting updates to Bitcoin +wallets and services.* + +- **Strike adds BOLT12 support:** + Strike [announced][strike blog] support for [BOLT12 offers][topic offers], + including using offers with [BIP353][] DNS payment instructions. + +- **BitBox02 adds silent payment support:** + BitBox02 [announced][bitbox blog sp] support for [silent payments][topic + silent payments] and an implementation of [payment requests][bitbox blog pr]. + +- **The Mempool Open Source Project v3.0.0 released:** + The [v3.0.0 release][mempool github 3.0.0] includes new [CPFP][topic cpfp] + fee calculations, additional [RBF][topic rbf] features including fullrbf + support, P2PK support, and new mempool and blockchain analysis features, among + other changes. + +- **ZEUS v0.9.0 released:** + The [v0.9.0 post][zeus blog 0.9.0] outlines additional LSP features, + watch-only wallets, hardware signing device support, support for transaction + [batching][scaling payment batching] including channel open transactions, and other features. + +- **Live Wallet adds consolidation support:** + The Live Wallet application analyzes the cost to spend a set of UTXOs at + different feerates including determining when outputs would be + [uneconomical][topic uneconomical outputs] to spend. The [0.7.0 release][live + wallet github 0.7.0] includes features to simulate [consolidation][consolidate + info] transactions and generate consolidation [PSBTs][topic psbt]. + +- **Bisq adds Lightning support:** + [Bisq v2.1.0][bisq github v2.1.0] adds the ability for users to settle trades using the Lightning Network. + +## Releases and release candidates + +*New releases and release candidates for popular Bitcoin infrastructure +projects. Please consider upgrading to new releases or helping to test +release candidates.* + +- [HWI 3.1.0][] is a release of the next version of this package + providing a common interface to multiple different hardware signing + devices. This release adds support for the Trezor Safe 5 and makes + several other improvements and bug fixes. + +- [Core Lightning 24.08.1][] is a maintenance release that fixes crashes + and other bugs discovered in the recent 24.08 release. + +- [BDK 1.0.0-beta.4][] is a release candidate for this library for + building wallets and other Bitcoin-enabled applications. The original + `bdk` Rust crate has been renamed to `bdk_wallet` and lower layer + modules have been extracted into their own crates, including + `bdk_chain`, `bdk_electrum`, `bdk_esplora`, and `bdk_bitcoind_rpc`. + The `bdk_wallet` crate "is the first version to offer a stable 1.0.0 API." + +- [Bitcoin Core 28.0rc2][] is a release candidate for the next major + version of the predominant full node implementation. A [testing + guide][bcc testing] is available. + +## Notable code and documentation changes + +_Notable recent changes in [Bitcoin Core][bitcoin core repo], [Core +Lightning][core lightning repo], [Eclair][eclair repo], [LDK][ldk repo], +[LND][lnd repo], [libsecp256k1][libsecp256k1 repo], [Hardware Wallet +Interface (HWI)][hwi repo], [Rust Bitcoin][rust bitcoin repo], [BTCPay +Server][btcpay server repo], [BDK][bdk repo], [Bitcoin Improvement +Proposals (BIPs)][bips repo], [Lightning BOLTs][bolts repo], +[Lightning BLIPs][blips repo], [Bitcoin Inquisition][bitcoin inquisition +repo], and [BINANAs][binana repo]._ + +_Note: the commits to Bitcoin Core mentioned below apply to its master +development branch, so those changes will likely not be released until +about six months after the release of the upcoming version 28._ + +- [Bitcoin Core #28358][] drops the `dbcache` limit because the previous 16 GB + limit was no longer sufficient to complete an Initial Block Download (IBD) + without flushing the UTXO set from RAM to disk, which can + [provide][lopp cache] about a 25% speed up. It was decided to remove the + limit rather than raise it because there was no optimal value + that would be future-proof and to give users complete flexibility. + +- [Bitcoin Core #30286][] optimizes the candidate search algorithm used in + cluster linearizations, based on the framework laid out in Section 2 of + this [Delving Bitcoin post][delving cluster], but with some modifications. + These optimizations minimize iterations to improve linearization performance, + but may increase startup and per-iteration costs. This is part of the [cluster + mempool][topic cluster mempool] project. See Newsletter [#315][news315 + cluster]. + +- [Bitcoin Core #30807][] changes the signaling of an [assumeUTXO][topic + assumeutxo] node that is syncing the background chain from `NODE_NETWORK` to + `NODE_NETWORK_LIMITED` so that peer nodes don’t request blocks older than about a week from it. This + fixes a bug where a peer would request a historical block and get no response, + causing it to disconnect from the assumeUTXO node. + +- [LND #8981][] refactors the `paymentDescriptor` type to only use it within + the `lnwallet` package. This is to later replace `paymentDescriptor` with a + new structure called `LogUpdate` to simplify how updates are logged and + handled, as part of a series of PRs implementing dynamic commitments, a type + of [channel commitment upgrade][topic channel commitment upgrades]. + +- [LDK #3140][] adds support for paying static [BOLT12][topic offers] invoices + to send [async payments][topic async payments] as an always online sender as + defined in [BOLTs #1149][], but without including the invoice request in the + payment [onion message][topic onion messages]. Sending as an often offline + sender or receiving async payments is not yet possible, so the flow cannot yet + be tested end-to-end. + +- [LDK #3163][] updates the [offers][topic offers] message flow by introducing a + `reply_path` in BOLT12 invoices. This allows the payer to send the error + message back to the payee in case of an invoice error. + +- [LDK #3010][] adds functionality for a node to retry sending an invoice + request to an [offer][topic offers] reply path if it hasn't yet received the + corresponding invoice. Previously, if an invoice request message on a single + reply path offer failed due to network disconnection, it wasn't retried. + +- [BDK #1581][] introduces changes to the [coin selection][topic coin selection] + algorithm by allowing for a customizable fallback algorithm in the + `BranchAndBoundCoinSelection` strategy. The signature of the `coin_select` + method is updated to allow a random number generator to be passed directly to + the coin selection algorithm. This PR also includes additional refactorings, + internal fallback handling, and simplification of error handling. + +- [BDK #1561][] removes the `bdk_hwi` crate from the project, to simplify + dependencies and CI. The `bdk_hwi` crate contained `HWISigner`, which has now + been moved to the `rust_hwi` project. + +{% assign four_days_after_posting = page.date | date: "%s" | plus: 345600 | date: "%Y-%m-%d 14:30" %} +{% include snippets/recap-ad.md when=four_days_after_posting %} +{% include references.md %} +{% include linkers/issues.md v=2 issues="28358,30286,30807,8981,3140,3163,3010,1581,1561,1149" %} +[BDK 1.0.0-beta.4]: https://github.com/bitcoindevkit/bdk/releases/tag/v1.0.0-beta.4 +[bitcoin core 28.0rc2]: https://bitcoincore.org/bin/bitcoin-core-28.0/ +[bcc testing]: https://github.com/bitcoin-core/bitcoin-devwiki/wiki/28.0-Release-Candidate-Testing-Guide +[halseth utxozk]: https://delvingbitcoin.org/t/proving-utxo-set-inclusion-in-zero-knowledge/1142/ +[schroder lnoff]: https://delvingbitcoin.org/t/privately-sending-payments-while-offline-with-bolt12/1134/ +[virtu seed]: https://delvingbitcoin.org/t/hardcoded-seeds-dns-seeds-and-darknet-nodes/1123 +[news303 aut-ct]: /en/newsletters/2024/05/17/#anonymous-usage-tokens +[nfc]: https://en.wikipedia.org/wiki/Near-field_communication +[zmn lnoff]: https://delvingbitcoin.org/t/privately-sending-payments-while-offline-with-bolt12/1134/2 +[t-bast lnoff]: https://delvingbitcoin.org/t/privately-sending-payments-while-offline-with-bolt12/1134/4 +[news271 noderc]: /en/newsletters/2023/10/04/#secure-remote-control-of-ln-nodes +[hwi 3.1.0]: https://github.com/bitcoin-core/HWI/releases/tag/3.1.0 +[core lightning 24.08.1]: https://github.com/ElementsProject/lightning/releases/tag/v24.08.1 +[delving cluster]: https://delvingbitcoin.org/t/how-to-linearize-your-cluster/303#h-2-finding-high-feerate-subsets-5 +[lopp cache]: https://github.com/bitcoin/bitcoin/pull/28358#issuecomment-2186630679 +[news315 cluster]: /en/newsletters/2024/08/02/#bitcoin-core-30126 +[strike blog]: https://strike.me/blog/bolt12-offers/ +[bitbox blog sp]: https://bitbox.swiss/blog/understanding-silent-payments-part-one/ +[bitbox blog pr]: https://bitbox.swiss/blog/using-payment-requests-to-securely-send-bitcoin-to-an-exchange/ +[mempool github 3.0.0]: https://github.com/mempool/mempool/releases/tag/v3.0.0 +[zeus blog 0.9.0]: https://blog.zeusln.com/new-release-zeus-v0-9-0/ +[live wallet github 0.7.0]: https://github.com/Jwyman328/LiveWallet/releases/tag/0.7.0 +[consolidate info]: https://en.bitcoin.it/wiki/Techniques_to_reduce_transaction_fees#Consolidation +[bisq github v2.1.0]: https://github.com/bisq-network/bisq2/releases/tag/v2.1.0 diff --git a/_topics/en/anonymity-networks.md b/_topics/en/anonymity-networks.md index 011b1ca471..fb5ab104bb 100644 --- a/_topics/en/anonymity-networks.md +++ b/_topics/en/anonymity-networks.md @@ -112,6 +112,9 @@ optech_mentions: - title: "Bitcoin Core #29200 allows the I2P to use connections encrypted with both ECIES-X25519 and ElGamal" url: /en/newsletters/2024/01/17/#bitcoin-core-29200 + - title: "DNS seeding for nodes on anonymity networks" + url: /en/newsletters/2024/09/20/#dns-seeding-for-non-ip-addresses + ## Optional. Same format as "primary_sources" above see_also: - title: Dandelion diff --git a/_topics/en/assumeutxo.md b/_topics/en/assumeutxo.md index 1e9e19ead4..783cee6b60 100644 --- a/_topics/en/assumeutxo.md +++ b/_topics/en/assumeutxo.md @@ -70,6 +70,9 @@ optech_mentions: - title: "Bitcoin Core #28553 adds assumeUTXO snapshot parameters for mainnet block 840,000" url: /en/newsletters/2024/08/23/#bitcoin-core-28553 + - title: "Bitcoin Core #30807 has assumeUTXO nodes during background sync signal NODE_NETWORK_LIMITED" + url: /en/newsletters/2024/09/20/#bitcoin-core-30807 + ## Optional. Same format as "primary_sources" above see_also: - title: "Bitcoin Core issue #15605: AssumeUTXO discussion" diff --git a/_topics/en/async-payments.md b/_topics/en/async-payments.md index cb333eaaaa..d6d052fdbe 100644 --- a/_topics/en/async-payments.md +++ b/_topics/en/async-payments.md @@ -54,6 +54,12 @@ optech_mentions: - title: "LDK #3125 introduces support for encoding and parsing messages needed for async payments" url: /en/newsletters/2024/07/05/#ldk-3125 + - title: "Eclair #2865 enables waking up a disconnected mobile peer for async payments or onion messages" + url: /en/newsletters/2024/09/06/#eclair-2865 + + - title: "LDK #3140 adds support for paying static BOLT12 invoices to send async payments" + url: /en/newsletters/2024/09/20/#ldk-3140 + ## Optional. Same format as "primary_sources" above see_also: - title: Trampoline payments diff --git a/_topics/en/channel-announcements.md b/_topics/en/channel-announcements.md index 0da407a05d..895b0cd8f4 100644 --- a/_topics/en/channel-announcements.md +++ b/_topics/en/channel-announcements.md @@ -41,6 +41,9 @@ optech_mentions: - title: New anonymous usage tokens proposed that could be used to improve channel announcement privacy url: /en/newsletters/2024/05/17/#anonymous-usage-tokens + - title: "Proving UTXO set inclusion in zero knowledge for more private channel announcement messages" + url: /en/newsletters/2024/09/20/#proving-utxo-set-inclusion-in-zero-knowledge + ## Optional. Same format as "primary_sources" above # see_also: # - title: diff --git a/_topics/en/cluster-mempool.md b/_topics/en/cluster-mempool.md index 208c1a96d6..77fee1e9ed 100644 --- a/_topics/en/cluster-mempool.md +++ b/_topics/en/cluster-mempool.md @@ -82,6 +82,9 @@ optech_mentions: - title: "Bitcoin Core #30285 adds two key cluster linearization algorithms" url: /en/newsletters/2024/08/09/#bitcoin-core-30285 + - title: "Bitcoin Core #30286 optimizes the candidate search algorithm used in cluster linearizations" + url: /en/newsletters/2024/09/20/#bitcoin-core-30286 + ## Optional. Same format as "primary_sources" above see_also: - title: Package relay diff --git a/_topics/en/coin-selection.md b/_topics/en/coin-selection.md index d63707d128..4bb24d1299 100644 --- a/_topics/en/coin-selection.md +++ b/_topics/en/coin-selection.md @@ -87,6 +87,9 @@ optech_mentions: - title: "Effect of SubtractFeeFromOutputs on coin selection in Bitcoin Core" url: /en/newsletters/2024/06/28/#how-does-subtractfeefrom-work + - title: "BDK #1581 allows a customizable fallback algorithm in branch-and-bound coin selection" + url: /en/newsletters/2024/09/20/#bdk-1581 + ## Optional. Same format as "primary_sources" above see_also: - title: An Evaluation of Coin Selection Strategies diff --git a/_topics/en/consensus-cleanup-soft-fork.md b/_topics/en/consensus-cleanup-soft-fork.md index 545e3ec530..95ecbfc65b 100644 --- a/_topics/en/consensus-cleanup-soft-fork.md +++ b/_topics/en/consensus-cleanup-soft-fork.md @@ -50,6 +50,9 @@ optech_mentions: - title: Notes from Bitcoin developer discussion about consensus cleanup url: /en/newsletters/2024/05/01/#coredev-tech-berlin-event + - title: "Discussion about mitigating merkle tree vulnerabilities in the proposed consensus cleanup soft fork" + url: /en/newsletters/2024/09/06/#mitigating-merkle-tree-vulnerabilities + ## Optional. Same format as "primary_sources" above see_also: - title: Soft fork activation diff --git a/_topics/en/discreet-log-contracts.md b/_topics/en/discreet-log-contracts.md index 93067e0dc0..bec3ed623b 100644 --- a/_topics/en/discreet-log-contracts.md +++ b/_topics/en/discreet-log-contracts.md @@ -77,6 +77,9 @@ optech_mentions: - title: "Wallet 10101 allows pooling funds between LN and DLCs" url: /en/newsletters/2023/07/19/#wallet-10101-beta-testing-pooling-funds-between-ln-and-dlcs + - title: "Lava Loans: DLC-based loan contract execution" + url: /en/newsletters/2024/09/13/#dlc-based-loan-contract-execution + ## Optional. Same format as "primary_sources" above see_also: - title: Signature adaptors diff --git a/_topics/en/fee-estimation.md b/_topics/en/fee-estimation.md index 7cd92e9eaf..40478231e0 100644 --- a/_topics/en/fee-estimation.md +++ b/_topics/en/fee-estimation.md @@ -56,6 +56,9 @@ optech_mentions: - title: "Bitcoin Core #30275 updates `estimatesmartfee` RPC default from conservative to economical" url: /en/newsletters/2024/08/02/#bitcoin-core-30275 + - title: "LDK #3268 adds a more conservative fee estimation method for dust calculations" + url: /en/newsletters/2024/09/06/#ldk-3268 + ## Optional. Same format as "primary_sources" above see_also: - title: Coin selection diff --git a/_topics/en/merkle-tree-vulnerabilities.md b/_topics/en/merkle-tree-vulnerabilities.md index 5986abdaec..d2d74f5c5d 100644 --- a/_topics/en/merkle-tree-vulnerabilities.md +++ b/_topics/en/merkle-tree-vulnerabilities.md @@ -56,6 +56,9 @@ optech_mentions: - title: "LDK #3215 rejects transactions less than 65 bytes to protect against merkle tree vulnerabilites" url: /en/newsletters/2024/08/16/#ldk-3215 + - title: "Discussion about mitigating merkle tree vulnerabilities" + url: /en/newsletters/2024/09/06/#mitigating-merkle-tree-vulnerabilities + ## Optional. Same format as "primary_sources" above see_also: - title: CVEs diff --git a/_topics/en/offers.md b/_topics/en/offers.md index ba6b5ebe39..98fb7053d4 100644 --- a/_topics/en/offers.md +++ b/_topics/en/offers.md @@ -121,6 +121,9 @@ optech_mentions: - title: "Proposal to allow opt-in identification and authentication of LN payers when using offers" url: /en/newsletters/2024/08/16/#optional-identification-and-authentication-of-ln-payers + - title: "LDK #3140 adds support for paying static BOLT12 invoices to send async payments" + url: /en/newsletters/2024/09/20/#ldk-3140 + ## Optional. Same format as "primary_sources" above see_also: - title: Blinded paths diff --git a/_topics/en/onion-messages.md b/_topics/en/onion-messages.md index 86626767b0..fc29f432f5 100644 --- a/_topics/en/onion-messages.md +++ b/_topics/en/onion-messages.md @@ -95,6 +95,9 @@ optech_mentions: - title: "Discussion of onion denial-of-service risk with proposed mitigations" url: /en/newsletters/2024/08/16/#onion-message-dos-risk-discussion + - title: "Eclair #2865 enables waking up a disconnected mobile peer for async payments or onion messages" + url: /en/newsletters/2024/09/06/#eclair-2865 + ## Optional. Same format as "primary_sources" above see_also: - title: Blinded paths diff --git a/_topics/en/op_cat.md b/_topics/en/op_cat.md index dc36b23b88..46351c4556 100644 --- a/_topics/en/op_cat.md +++ b/_topics/en/op_cat.md @@ -66,6 +66,9 @@ optech_mentions: - title: "`OP_CAT` script to validate proof of work" url: /en/newsletters/2024/06/07/#op-cat-script-to-validate-proof-of-work + - title: "`OP_CAT` research fund" + url: /en/newsletters/2024/09/06/#op-cat-research-fund + ## Optional. Same format as "primary_sources" above see_also: - title: OP_CHECKSIGFROMSTACK diff --git a/_topics/en/output-script-descriptors.md b/_topics/en/output-script-descriptors.md index 5bcfa61ea3..b8e184f73b 100644 --- a/_topics/en/output-script-descriptors.md +++ b/_topics/en/output-script-descriptors.md @@ -179,6 +179,9 @@ optech_mentions: - title: "BIPs 328, 390, and 373 added with specifications for MuSig2 key derivation, descriptors, and PSBTs" url: /en/newsletters/2024/07/05/#bips-1540 + - title: "Bitcoin Core #22838 implements multiple derivation path descriptors (BIP389)" + url: /en/newsletters/2024/09/06/#bitcoin-core-22838 + ## Optional. Same format as "primary_sources" above see_also: - title: Miniscript diff --git a/_topics/en/pooled-mining.md b/_topics/en/pooled-mining.md index 571e43bcac..1cd2c6fff0 100644 --- a/_topics/en/pooled-mining.md +++ b/_topics/en/pooled-mining.md @@ -59,6 +59,12 @@ optech_mentions: - title: "Stratum v2 benchmarking tool released" url: /en/newsletters/2024/08/23/#stratum-v2-benchmarking-tool-released + - title: "Stratum v2 extension for fee revenue sharing" + url: /en/newsletters/2024/09/06/#stratum-v2-extension-for-fee-revenue-sharing + + - title: "Bitcoin Core #30509 adds an -ipcbind option for use by an external Stratum v2 mining service" + url: /en/newsletters/2024/09/13/#bitcoin-core-30509 + ## Optional. Same format as "primary_sources" above #see_also: # - title: diff --git a/_topics/en/psbt.md b/_topics/en/psbt.md index b3ea7120d7..cfe507e98a 100644 --- a/_topics/en/psbt.md +++ b/_topics/en/psbt.md @@ -225,6 +225,9 @@ optech_mentions: - title: "BIPs 328, 390, and 373 added with specifications for MuSig2 key derivation, descriptors, and PSBTs" url: /en/newsletters/2024/07/05/#bips-1540 + - title: "BIP353 adds a new standard field to PSBT outputs for DNSSEC proofs" + url: /en/newsletters/2024/09/06/#bips-1657 + ## Optional. Same format as "primary_sources" above see_also: - title: Output Script Descriptors diff --git a/_topics/en/sidechains.md b/_topics/en/sidechains.md index 699d1f9661..6c7cacabdf 100644 --- a/_topics/en/sidechains.md +++ b/_topics/en/sidechains.md @@ -40,6 +40,9 @@ optech_mentions: - title: Speculatively using hoped-for consensus changes to create two-way pegs for sidechains url: /en/newsletters/2023/06/28/#speculatively-using-hoped-for-consensus-changes + - title: "Discussion about affect on sidechains of mitigating merkle tree vulnerabilities" + url: /en/newsletters/2024/09/06/#mitigating-merkle-tree-vulnerabilities + ## Optional. Same format as "primary_sources" above # see_also: # - title: diff --git a/_topics/en/silent-payments.md b/_topics/en/silent-payments.md index 1c5de80aa0..3b298e824a 100644 --- a/_topics/en/silent-payments.md +++ b/_topics/en/silent-payments.md @@ -68,6 +68,9 @@ optech_mentions: - title: "BIPs #1620 and #1622 make minor updates to the BIP352 specification of silent payments" url: /en/newsletters/2024/06/28/#bips-1620 + - title: "BitBox02 hardware signing device adds silent payment support" + url: /en/newsletters/2024/09/20/#bitbox02-adds-silent-payment-support + ## Optional. Same format as "primary_sources" above see_also: - title: Output linking diff --git a/_topics/en/uneconomical-outputs.md b/_topics/en/uneconomical-outputs.md index 82c9a83310..45ec4b0558 100644 --- a/_topics/en/uneconomical-outputs.md +++ b/_topics/en/uneconomical-outputs.md @@ -66,6 +66,9 @@ optech_mentions: - title: "BOLTs #919 suggests LN nodes limit their maximum exposure to uneconomical HTLCs" url: /en/newsletters/2023/08/23/#bolts-919 + - title: "LDK #3268 adds a more conservative fee estimation method for dust calculations" + url: /en/newsletters/2024/09/06/#ldk-3268 + ## Optional. Same format as "primary_sources" above see_also: - title: Dust attacks (output linking)