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Comment and warning about epoch blocks (#3733)

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Dimitrios Siganos 2022-02-11 16:28:11 +00:00 • committed by GitHub
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nano/lib/epoch.hpp
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@ -47,6 +47,17 @@ public:
class epochs
{
public:
/** Returns true if link matches one of the released epoch links.
* WARNING: just because a legal block contains an epoch link, it does not mean it is an epoch block.
* A legal block containing an epoch link can easily be constructed by sending to an address identical
* to one of the epoch links.
* Epoch blocks follow the following rules and a block must satisfy them all to be a true epoch block:
* epoch blocks are always state blocks
* epoch blocks never change the balance of an account
* epoch blocks always have a link field that starts with the ascii bytes "epoch v1 block" or "epoch v2 block" (and possibly others in the future)
* epoch blocks never change the representative
* epoch blocks are not signed by the account key, they are signed either by genesis or by special epoch keys
*/
bool is_epoch_link (nano::link const & link_a) const;
nano::link const & link (nano::epoch epoch_a) const;
nano::public_key const & signer (nano::epoch epoch_a) const;