Data - LTO Network

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Data
Data transaction sets data entries in sender's account data storage.
JSON
1
{
2
  "type": 12,
3
  "version": 3,
4
  "id": "8M6dgn85eh3bsHrVhWng8FNaHBcHEJD4MPZ5ZzCciyon",
5
  "sender": "3Jq8mnhRquuXCiFUwTLZFVSzmQt3Fu6F7HQ",
6
  "senderKeyType": "ed25519",
7
  "senderPublicKey": "AJVNfYjTvDD2GWKPejHbKPLxdvwXjAnhJzo6KCv17nne",
8
  "fee": 14000000,
9
  "timestamp": 1610397549043,
10
  "data": [
11
    {
12
      "type": "boolean",
13
      "value": true,
14
      "key": "bool"
15
    },
16
    {
17
      "type": "binary",
18
      "value": "base64:SGVsbG8gV2F2ZXM=",
19
      "key": "bin"
20
    },
21
    {
22
      "type": "integer",
23
      "value": 1234567,
24
      "key": "int"
25
    },
26
    {
27
      "type": "string",
28
      "value": "some text",
29
      "key": "str"
30
    }
31
  ],
32
  "proofs": [
33
    "4aMwABCZwtXrGGKmBdHdR5VVFqG51v5dPoyfDVZ7jfgD3jqc851ME5QkToQdfSRTqQmvnB9YT4tCBPcMzi59fZye"
34
  ],
35
  "height": 1069662
36
}
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id and height should be omitted when broadcasting. These fields are set by the node.
Binary strings are base58 encoded.
timestamp is in microseconds since epoch.
fee includes 8 digits, so LTO * 10^8
Data entries
Data entries are one of 4 types: "boolean", "integer", "string", and "binary". A data transaction can have a maximum of 100 data entries.
In JSON, the value of a binary data entry must be base64 encoded and prefixed with "base64:". The value of the integer type is a signed long (8 bytes).
Fees
The fees of a data transaction are determined by the size of the data entries. The base fee is 1 LTO, with an additional fee of 0.1 LTO per 256 bytes.
Binary schema
The binary data structure of the unsigned transaction.
V3 (current)
1
Transaction type
Byte (constant, value=12)
1
2
Version
Byte (constant, value=3)
1
3
Chain id
Byte
1
4
Timestamp
Long
8
5
Sender's key type
KeyType (Byte)
1
6
Sender's public key
PublicKey (Array[Byte])
32 | 33
7
Fee
Long
8
8
Number of entries
Short
2
9
Entry 1
​
​
...
​
​
​
Anchor length and Anchor can be repeated for each anchor hash.
Chain id can be obtained by taking the 2nd byte from the sender address.
Each key type has a numeric id in addition to the reference from the JSON.
Integers (short, int, long) have a big endian byte order.
The encoding of a data entry depends on the type.
Integer
Type
Byte (constant, value=0)
1
Value
Long
8
Boolean
Type
Byte (constant, value=1)
1
Value
Byte
1
Binary
Type
Byte (constant, value=2)
1
Length (N)
Short
2
Value
Array[Byte]
N
String
Type
Byte (constant, value=3)
1
Length (N)
Short
2
Value
String (UTF-8)
N
​
Set Script
Anchor
Last modified 2mo ago
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