consensus, core, ethstats: use engine specific block beneficiary (#14318)

* consensus, core, ethstats: use engine specific block beneficiary

* core, eth, les, miner: use explicit beneficiary during mining

consensus/clique/clique.go

@@ -220,6 +220,12 @@ func New(config *params.CliqueConfig, db ethdb.Database) *Clique {
 	}
 }
 
+// Author implements consensus.Engine, returning the Ethereum address recovered
+// from the signature in the header's extra-data section.
+func (c *Clique) Author(header *types.Header) (common.Address, error) {
+	return ecrecover(header)
+}
+
 // VerifyHeader checks whether a header conforms to the consensus rules.
 func (c *Clique) VerifyHeader(chain consensus.ChainReader, header *types.Header, seal bool) error {
 	return c.verifyHeader(chain, header, nil)

consensus/consensus.go

@@ -49,6 +49,11 @@ type ChainReader interface {
 
 // Engine is an algorithm agnostic consensus engine.
 type Engine interface {
+	// Author retrieves the Ethereum address of the account that minted the given
+	// block, which may be different from the header's coinbase if a consensus
+	// engine is based on signatures.
+	Author(header *types.Header) (common.Address, error)
+
 	// VerifyHeader checks whether a header conforms to the consensus rules of a
 	// given engine. Verifying the seal may be done optionally here, or explicitly
 	// via the VerifySeal method.

consensus/ethash/consensus.go

@@ -59,6 +59,12 @@ var (
 	errInvalidPoW        = errors.New("invalid proof-of-work")
 )
 
+// Author implements consensus.Engine, returning the header's coinbase as the
+// proof-of-work verified author of the block.
+func (ethash *Ethash) Author(header *types.Header) (common.Address, error) {
+	return header.Coinbase, nil
+}
+
 // VerifyHeader checks whether a header conforms to the consensus rules of the
 // stock Ethereum ethash engine.
 func (ethash *Ethash) VerifyHeader(chain consensus.ChainReader, header *types.Header, seal bool) error {