specter-desktop VS joinmarket-clientserver

https://github.com/cryptoadvance/specter-desktop https://github.com/sparrowwallet/sparrow

You can for example use it to run specter-desktop (https://github.com/cryptoadvance/specter-desktop) on top for example, to use your hardware wallet with improved privacy or even mix them together to create multi-sig setups.

Also, the functioning of your hardware wallet isn't dependent on this corporations still existing. There is various free and open source software that lets you manage your hardware wallet, and even combine them to make multi-sig wallets (https://github.com/cryptoadvance/specter-desktop) . This lets you access all information via your own Bitcoin node, no third party system required, fully decentralized.

Take a look at Specter Desktop (https://github.com/cryptoadvance/specter-desktop) , which is a web interface for Bitcoin Core that lets you use basically every hardware wallet directly with your node.

Specter Desktop v1.14.1 (Released: 08th December 2022) - https://github.com/cryptoadvance/specter-desktop/releases

Alternatively you can purchase multiple devices from different manufacturers and create a multisig wallet that requires multiple signatures from multiple devices. Wallet software like Specter-Desktop can help you with this. They also have a DIY signer https://github.com/cryptoadvance/specter-diy

What you can do is to use one or more of this hardware wallets with your own node and a software like specter-desktop (https://github.com/cryptoadvance/specter-desktop) on top. This way you are completely self sufficient.

It is most likely an issue that is solved in the upcoming version of Specter; you might be interested in trying this prerelease, or wait for the official release: https://github.com/cryptoadvance/specter-desktop/releases/tag/v1.13.1-pre1

Specter runs in Electrum, but you can technically set it up to be run through a web browser, as long as you're hosting the service yourself.

Specter Desktop v1.9.4 - Release page - Upgrade guide UIUX: Overhaul of UTXO list, handling of locked UTXOs and scrollbar added to tx-table web component; + various bug fixes, chores and docs. See release page for full notes.

It's complicated. The more steps you take to obfuscate your transaction, the harder it will be for an adversary to track your coins. You can look into using something like the JoinMarket Wallet to keep your transaction more private.

You can use coinjoin services like joinmarket to anonymize your coins. You can also send them through a lightning swap.

This is a bitcoin service delivered in a low trust manner where the bitcoin user need only utilize software they run and control for the services and can protect themselves from malicious third parties with very little trust or consequence from peers. This is the gold standard of Bitcoin service. Examples include lightning routing, lightning liquidity marketplaces like pool, coinjoins like joinmarket, coinswaps, submarine swaps like loop and others.

If you want to play with OP_CHECKLOCKTIMEVERIFY, you can use the wallet in JoinMarket to create a fidelity bond. Be careful, though, because it's absolutely impossible to spend such a bond until its expiration.

I opened a GitHub issue - https://github.com/JoinMarket-Org/joinmarket-clientserver/issues/1349.