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Update specs/networking/node-identification.md 

Co-Authored-By: mslipper <me@matthewslipper.com>
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Raúl Kripalani 2019-03-13 21:56:47 -07:00 committed by GitHub
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@ -23,7 +23,7 @@ It is RECOMMENDED that clients set their TCP port to the default of `9000`.
## Peer ID Generation
The `libp2p` networking stack identifies peers via a "peer ID." Simply put, a node's Peer ID is the SHA2-256 `multihash` of the node's public key. `go-libp2p-crypto` contains the canonical implementation of how to hash `secp256k1` keys for use as a peer ID.
The `libp2p` networking stack identifies peers via a "peer ID." Simply put, a node's Peer ID is the SHA2-256 `multihash` of the node's public key struct (serialized in protobuf, refer to the [Peer ID spec](https://github.com/libp2p/specs/pull/100)). `go-libp2p-crypto` contains the canonical implementation of how to hash `secp256k1` keys for use as a peer ID.
# See Also