step 7 in Tezzigator baking tutorial https://medium.com/@Tezzigator/permanent-tezos-sandboxing-509368945c4a

protocol.json

{
  "bootstrap_accounts": [
    ["edpkuBknW28nW72KG6RoHtYW7p12T6GKc7nAbwYX5m8Wd9sDVC9yav", "4000000000000"],
    ["edpktzNbDAUjUk697W7gYg2CRuBQjyPxbEg8dLccYYwKSKvkPvjtV9", "4000000000000"],
    ["edpkuTXkJDGcFd5nh6VvMz8phXxU3Bi7h6hqgywNFi1vZTfQNnS1RV", "4000000000000"],
    ["edpkuFrRoDSEbJYgxRtLx2ps82UdaYc1WwfS9sE11yhauZt5DgCHbU", "4000000000000"],
    ["edpkv8EUUH68jmo3f7Um5PezmfGrRF24gnfLpH3sVNwJnV5bVCxL2n", "4000000000000"]
  ],
  "dictator_pubkey": "edpkuSLWfVU1Vq7Jg9FucPyKmma6otcMHac9zG4oU1KMHSTBpJuGQ2"
}