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{{define "title"}}Multisig Steel Backup. Self Custody for Individuals and Businesses{{end}}
{{define "description"}}Easily backup bitcoin multisig and singlesig wallets automatically onto stainless steel. Professional self custody solution for private and businesses.{{end}}
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                <h1 class="mb-0 mt-4">Steel Backup Specialized for Bitcoin Multisig Wallets</h1>
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                        <li><p class="mb-0"><a href="#self-contained-multisig-setup">Self-contained</a>: Recover with Minimum of Shares.</p></li>
                        <li><p class="mb-0">QR Codes for Easy Recovery and Air Gapped Signing.</p></li>
                        <li><p class="mb-0">Works with all signers and hardware wallets.</p></li>
                    </ul>
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                <p class="text-center mt-6 mb-6"><a href="/shop" role="button">Order Now <span class="btn-flow">>></span></a></p>
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            <h2 class="text-center" id="self-contained-multisig-setup">Self-contained Multisig Backups</h2>
            <h3 class="text-center">SeedHammer eliminates the need for storing a descriptor.</h3>
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        <p class="text-center">Without the public keys for <strong>all</strong> the seeds in a multisig wallet, you can't recover the wallet.<br>Other backup solutions require a separate digital or printed copy of the wallet.</p>
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                <img style="width: 75%;" src="/static/img/3-of-5-multisig.webp" alt="By design M-of-N cosigners is enough to recover a multisig wallet backed up with SeedHammer">
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                <h3 class="text-center">Recover With Minimum of Shares</h3>
                <p>The minimum amount of shares is enough to recover a multisig wallet backed up with SeedHammer.</p>
                <ul class="ms-4">
                    <li>Withstand damage or loss of all shares beyond the quorum.</li>
                    <li>Any combination of M-of-N plates contain enough data for a full recovery.</li>
                    <li>Fast and convenient recovery with QR codes.</li>
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                <h3 class="text-center">No Need to Backup Wallet Descriptor</h3>
                <p>The descriptor is split into parts which are distributed among the plates in a way so any quorum can recover the wallet.</p>
                <ul class="ms-4">
                    <li>Perform complete recovery with the minimum number of plates.</li>
                    <li>No need to separately store the descriptor online, offline or alongside each physical plate.</li>
                    <li>Complies with multisig standards, no special tools needed for recovery.</li>
                </ul>
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                <div class="img-center">
                    <img src="/static/img/no-descriptor-needed.webp" alt="SeedHammer eliminates the need for storing a separate wallet output descriptor in multisignature backups">
                    <small>One side contains the seed,<br>the other side contains a part of the descriptor.</small>
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                    <img src="/static/img/seedhammer-front-and-controller.webp" width="85%" alt="The SeedHammer Machine incl. Raspberry Pi (SeedSigner) running the controller software">
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                <h2 class="text-center">Built for The Security Conscious</h2>
                <p>The controller software is <a href="https://github.com/seedhammer/seedhammer/blob/main/LICENSE" target="_blank">open source</a> and runs on the same air gapped <a href="/article/the-seedhammer-controller">hardware as SeedSigner</a>.</p>
                <p>The electric hammer is a modified off-the-shelf machine. It is stateless and contains no radio capabilities (wifi, bluetooth, etc.).</p>
                <p>The singlesig and multisig backups are easily verifiable.</p>
                <p>Read more in our article on <a href="/article/attack-vectors">attack vectors</a>.</p>
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            <h2 class="text-center">See More On <a href="https://twitter.com/SeedHammer">Twitter</a></h2>
            <h3 class="text-center"><a href="https://twitter.com/SeedHammer">twitter.com/SeedHammer</a></h3>
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                <blockquote class="twitter-tweet" data-conversation="none" data-dnt="true"><p lang="en" dir="ltr">Some do! <a href="https://t.co/xj7tDjivzh">pic.twitter.com/xj7tDjivzh</a></p>&mdash; Erik (@brikk_) <a href="https://twitter.com/brikk_/status/1675534057109610500?ref_src=twsrc%5Etfw">July 2, 2023</a></blockquote>
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                <blockquote class="twitter-tweet" data-dnt="true"><p lang="en" dir="ltr">Sovereignty or nah? ⁦<a href="https://twitter.com/SeedSigner?ref_src=twsrc%5Etfw">@SeedSigner</a>⁩ ⁦<a href="https://twitter.com/start9labs?ref_src=twsrc%5Etfw">@start9labs</a>⁩ ⁦<a href="https://twitter.com/SeedHammer?ref_src=twsrc%5Etfw">@SeedHammer</a>⁩ <a href="https://t.co/2Mxw9sa5pC">pic.twitter.com/2Mxw9sa5pC</a></p>&mdash; ericjaffe (@ericjaffe) <a href="https://twitter.com/ericjaffe/status/1675255817879126016?ref_src=twsrc%5Etfw">July 1, 2023</a></blockquote>
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                <blockquote class="twitter-tweet" data-dnt="true"><p lang="en" dir="ltr"><a href="https://twitter.com/SeedHammer?ref_src=twsrc%5Etfw">@SeedHammer</a> <a href="https://twitter.com/SeedSigner?ref_src=twsrc%5Etfw">@SeedSigner</a> guess what arrived today? Now need to fond time to set it up and knock a few tests out. <a href="https://t.co/XiCivvXUyB">pic.twitter.com/XiCivvXUyB</a></p>&mdash; MoparMiningLLC (@MoparMining) <a href="https://twitter.com/MoparMining/status/1653122935807156237?ref_src=twsrc%5Etfw">May 1, 2023</a></blockquote>
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                <blockquote class="twitter-tweet" data-dnt="true"><p lang="en" dir="ltr">On stage demonstrating <a href="https://twitter.com/SeedHammer?ref_src=twsrc%5Etfw">@SeedHammer</a> <a href="https://twitter.com/seedor_io?ref_src=twsrc%5Etfw">@seedor_io</a> and <a href="https://twitter.com/SeedSigner?ref_src=twsrc%5Etfw">@SeedSigner</a> at <a href="https://twitter.com/BitcoinAlive?ref_src=twsrc%5Etfw">@BitcoinAlive</a> <a href="https://t.co/L08xJjHs4H">pic.twitter.com/L08xJjHs4H</a></p>&mdash; mineracks (@mineracks) <a href="https://twitter.com/mineracks/status/1647092860091777024?ref_src=twsrc%5Etfw">April 15, 2023</a></blockquote>
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