A native iOS signer for Solana Squads multisigs.
-Review and co-sign Squads v4 proposals from your phone, with your keys held on device. Every proposal is decoded and inspectable, so you always know what you are about to approve.
- - - -Know what
you sign.
+ Squads multisig proposals arrive encoded, and most signers approve what they cannot read. Cosign is a native iOS signer that decodes every instruction into plain language, so you review the real action before you add your signature.
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+ Know exactly what you are signing.
-Cosign decodes every instruction into plain language, with a severity and a confidence read on the data. You can open the raw fields when you want them. Nothing is hidden behind a blind signature.
+A signature on bytes you cannot read.
+A Squads proposal is a serialized transaction. The Squads web app can decode it, but the moment you confirm on a hardware wallet you are back to approving a hash the device cannot explain. Cosign keeps the decoded action in front of you through to the signature, so approving stays a decision rather than a leap of faith.
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