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

Block 21320

Hash
000000524b125d4e5b22c38146cfc44a67a8fad95d82d1ce26e8cc4f93ace339
Confirmations
20116
Time
2026-10-12 17:17:48 UTC
Median time
2026-10-12 17:08:58 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
539710f253bc72e12893fade85992fdec6b3d378137d8c5c641e02b4e86c4ac5
Previous block
000000444a2f1a7bd6b9fcf8bd2e309c9e75e21d270f6a2f926f61778b7867d2
Next block
000000cd02a48e6dab0f19846191dca9dab25a2c9c01aab30f86e304959f9d14

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 21320 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
874402608678ace8fe10775e3208048e… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
539710f253bc…02b4e86c4ac5 coinbase1250