Ark-0
Ark-0 is a test network for trying things out. It may be reset at any time.

Block 21919

Hash
0000000f2255248136dff4b60159f515d618ea05ec4caf733e66df4402e8c38c
Confirmations
19211
Time
2026-10-13 09:59:20 UTC
Median time
2026-10-13 09:50:46 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
6eccfd6fd8fda08455c51fbcea9f9cce47bee850f36a5fb2865b3c32c2a10cfe
Previous block
0000007415217a39628317913317aba1cc4c620530a9b32f88df42f78fa83c74
Next block
0000002c415be0869857184a3e1e94cd7431dcfe039e9b4f408a713257f548b3

ML-DSA-44 block signature (M2)

M2 is an experimental rule of this test network. From a height set in its build, a node that enforces M2 accepts a block only if, besides the classical signet signature, the block carries a valid ML-DSA-44 signature by the Ark-0 block key, in its coinbase's witness commitment output. This page shows that signature; it does not check it.

Block 21919 is at or above the activation height 20000: nodes that enforce M2 accept a block there only with a valid ML-DSA-44 block signature.

The node behind this site enforces M2 and holds this block, so its block signature passed the node's check.

Status
In the form M2 requires, followed by the signet solution push (the classical signature)
Signature
fd84aed3f01974d4e6de33c88b225941… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
6eccfd6fd8fd…3c32c2a10cfe coinbase1250