Blockchain Glossary

Receipt

To measure a node’s participation in ZooBC, when exchanging information in the Peer to Peer network, nodes acknowledge having received information from another node by sending back a digitally signed receipt. Once a node has collected enough receipts and is its turn to create a block, it can include in the metadata of the block a subset of the receipts it has collected. This can be later used to prove, at consensus level, that the node has in fact participated in the network, thus earning participation score.