Web-wallet for bitcoin and altcoins

[crypto_trader#43xzEXrP]

Hello. Is there any open-source HTML-JavaScript web-wallets,
for bitcoin and altcoins,
where I can, locally, in browser, without Internet connections,
and import my private key to someone online services,
do the next console commands:
createrawtransaction and signrawtransaction?

The sendrawtransaction, in the mainnet, or to the miners (broadcast transaction),
I can do after signing the raw transaction, using services, like this: https://blockchain.info/pushtx
or this: https://coinb.in/#broadcast

I see here: http://brainwalletx.github.io/#tx
there is no any option to get SIGNED RAW-transactions... (no signature there)...
Also, this transaction signer - not working too... https://coinb.in/#sign

I think, we all, can do the web-wallet for bitcoin and altcoins, like this: https://client.wavesplatform.com/
where secret seed or private key, will be stored as encrypted data in the LocalStorage,
and this web-wallet can be more secure,
than do importing the private key (WIF), to anywhere.

Also, as you can see, there is the DEX in wavesblockchain, inside waves web-wallet.
All tickers trading to all tickers there (if their ASSET_ID will be specified in the search field through "/").

And this DEX can be p2p, if many altcoins will be added to web-wallet.
I see this like just add adding the addnode-lists, inside the wallet,
and connecting to the nodes for trading, using WebSockets or WebRTC, for example...

Best regards.

[1715488150]

1715488150

[1715488150]

1715488150

[1715488150]

1715488150

[faceoff97]

What I have is an open source desktop and moblie app called HodLER wallet. It is the only open source multiwallet that could store multiple kind of coin. I don't think if this is really what you need, but this could be one of the best open source wallet that could hold Bitcoin and altcoins even ERC20 token.

[estenity]

What I have is an open source desktop and moblie app called HodLER wallet. It is the only open source multiwallet that could store multiple kind of coin. I don't think if this is really what you need, but this could be one of the best open source wallet that could hold Bitcoin and altcoins even ERC20 token.

is it presently usable ?

[crairezx20]

What I have is an open source desktop and moblie app called HodLER wallet. It is the only open source multiwallet that could store multiple kind of coin. I don't think if this is really what you need, but this could be one of the best open source wallet that could hold Bitcoin and altcoins even ERC20 token.

is it presently usable ?

Never heard about that wallet if you wan\t to use a wallet that supports bitcoin and altcoin I suggest you use coinomi wallet they also have an open source wallet on github so it safe and never had any bad experience using this wallet before and I heard they will release a desktop wallet this month or this coming January so this is best alternative wallet that I think safe compared to hodler wallet which is not well known wallet.

[bL4nkcode]

In addition, for ether people can use myetherwallet offline. Just download the whole site here https://github.com/kvhnuke/etherwallet/releases/tag/v3.28.0.
(While offline) Open the index.html and create an account or log in using a private key or JSON file, go to Send Offline tab, fill the step 1 and 2, generate a raw transaction, then go step 3, signed then send the transaction (online).

As for bitcoin coinb.in will be a good example. I just don't know some other altcoins.

I suggest you use coinomi wallet they also have an open source wallet on github so it safe and never had any bad experience using this wallet before and I heard they will release a desktop wallet this month or this coming January so this is best alternative wallet that I think safe compared to hodler wallet which is not well known wallet.

Coinomi cannot be run offline as a web-based and op never ask if it's an open source or not so...

[estenity]

thank you for both of you.

[crypto_trader#43xzEXrP]

HodLER wallet

This is not web-wallet. And this is not portable.
This need to include some libraries in the system. I cann't using this fully.

myetherwallet offline.

Yeap, but this only for ethereum and ERC20 tokens. Not for altcoins.

As for bitcoin coinb.in will be a good example.

I cann't get signed raw transaction on coinb.in

But... I see this script is allow to get signed raw transactions: https://bitcoincashjs.github.io/

Code:

const transaction = new bch.Transaction()
  .from(utxo)
  .addData('Bitcoin Cash - Peer-to-Peer Electronic Cash.') // Add OP_RETURN data
  .sign(privateKey);

So need to learn programming syntax do automatize this.

[crypto_trader#43xzEXrP]

As for bitcoin coinb.in will be a good example.

I see this fork is supporting to sign raw transactions.