Bigmap Update Table

Lists historic bigmap updates. Use this table to bulk-fetch large quantities of bigmap updates, e.g. to replay or reconstruct bigmap state. A different way to access updates is by using the explorer API endpoints.

HTTP Response

row_id uint64
Unique row identifier.
bigmap_id int64
Unique on-chain id of the bigmap.
key_id uint64
Short hash of the bigmap key.
key_hash string
Tezos script expression hash of the key.
key string
Hex string with Micheline encoded data for the key.
value string
Hex string with Micheline encoded data for the value.
action enum
Update action, one of update, remove, alloc, copy.
height int64
Block height at which the update happened.
time timestamp
Time of the update.
op_id uint64
Unique row id of the operation that contained the update.
op_hash hash
Hash of the operation that contained the update.

Example Request

curl ""
import (
// create a new query object
q := tzstats.DefaultClient.NewBigmapUpdateQuery()
// need typs for decoding
info, err := tzstats.DefaultClient.GetBigmap(
keyType := info.MakeKeyType()
valType := info.MakeValueType()
// add filters and configure the query to list all updates (update/removal actions)
q.WithFilter(tzstats.FilterModeEqual, "bigmap_id", 511).
// execute the query
list, err := q.Run(context.Background())
// walk bigmap updates
for _, row := range list.Rows {
// access BigmapRow structs (use TzGo Type/Value to decode binary data)
key := row.GetKey(keyType)
val := row.GetValue(valType)

Example Response (comments added for explanation)

12520900, // row_id
515, // bigmap_id
14880518129034867591, // key_id
"update", // action
63514493, // op_id
1585371, // height
1628006826000, // time
"07070a0000001601b39686f116bb35115559f7e781200850e02854c4000000", // key
"008d96adb1af01", // value
"onw1dT9DssyqPN6fGXq99qG5nd5zK1MXuHZPHm5GTrjQy6aERt1", // op_hash
"exprvLWAQodM4mjNkpX3WzgbUi8KKhL8qPDchFuwNQBdPbt6CTQQjf" // key_hash