docs: invalid signature description #21
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chenyukang
reviewed
Dec 12, 2025
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| * `S`: `S` represents a reserved field. It must be of value `0x80`, the value is intentially chosen to be different from the secp256k1 multisig lock deployed in CKB's genesis block. | ||
| * `R`: `R` represents how many starting public keys are required. For example, in a 3-of-5 setup, one might want to say that signatures for public key A and B must always be present so as to unlock the cell. In this case one can put ublic key A and B at the start of the public key list, and then set `R` to 2. | ||
| * `M`: `M` represents the threshold, meaning how many signatures must be provided to unlock the cell. For instance, in a 3-of-5 setup, `M` must be 3. |
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In this case one can put ublic key should be In this case one can put public key in this page.
chenyukang
reviewed
Dec 12, 2025
| * `N`: `N` represents the avialble public keys, in a 3-of-5 setup, `N` must be 5. | ||
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| If any signature fails verification, the entire process fails, even when the remaining signatures (more than `M`) are valid. | ||
| In the UTXO model, transactions can be validated off-chain by SDKs or tools, allowing invalid signatures to be removed before broadcasting to the P2P network. |
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Suggested change
| In the UTXO model, transactions can be validated off-chain by SDKs or tools, allowing invalid signatures to be removed before broadcasting to the P2P network. | |
| In the UTXO model, transactions can be validated off-chain by SDKs or tools, allowing invalid signatures to be removed before broadcasting to the P2P network. Therefore, the design enforces a strict limit: provide exactly $M$ signatures (no more, no less). |
chenyukang
approved these changes
Dec 12, 2025
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resolve #19