Also, did they ban15-15 multisig yet?
At the time of writing, not yet, but they may block 1-of-15 multisig, used by bitfiles, when they will merge this change:
https://github.com/bitcoinknots/bitcoin/pull/422I am thinking of taking another half coin from one of my wallets and maybe giving bitfiles a try
Note that you don't have to trust them in any way, when it comes to your private keys. You upload files first, then download JSON recovery files, and then you can do with them whatever you want, for example upload it manually, without using this website at all.
For example, let's assume, that I would want to upload some text file. I can try to upload it first, and download this JSON:
{
"kind": "bitfiles-upload",
"version": 1,
"chain": "btcb2",
"createdAt": "2026-09-26T06:07:29.260Z",
"secretKey": "621cbe7483f78e8dbb65620e5432098c24f31ab4363a3f104eaa955fb59bd745",
"plan": {
"revealInputs": 1,
"dataOutputSats": 1240,
"revealFeeSats": 240,
"fundingFeeSats": 167,
"depositSats": 11407,
"returnedSats": 1000,
"hrp": "bc",
"filename": "main.cpp",
"mime": "application/octet-stream",
"size": 69,
"feerate": 1,
"ownerAddress": "bc1qufm5zqkc9250ufc0h8e0xtk2xcljf7xskecll9",
"depositAddress": "bc1qufm5zqkc9250ufc0h8e0xtk2xcljf7xskecll9",
"bpubId": "d7298bc14e0be452ff77ff31612e137266a354c2f65663666e5f139278248495",
"redeemScripts": [
"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"
]
},
"backedUp": false
}
And then, I can do anything I want. First, I can make sure, that my file is not too big, and it is encoded properly. Then, I can make sure, that I can control the address, where I would want to send some dust. And also, I can skip this website completely, grab that data, and push it by myself, entirely outside bitfiles, and then, it will be indexed, and displayed later. Another thing is if you know the encoding, then you can also replace their keys with your own ones, then it is fully trustless, and can be done, without "sending" coins to another place: you can simply point at any existing address under your control, and modify that data accordingly.
Which also means, that pushing data can be outsourced. You can prepare everything upfront, browse your transactions offline, and only push them, when you are sure, that you know, what are you doing. Another thing is you can run Knots node offline, point it at regtest, and see, if it is still valid in their current consensus, before actually sending anything.