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

Block 21288

Hash
000000efb8ebc01b74d31782c780281940b67a84d694bab6e1b60cd01fa9d3c0
Confirmations
19405
Time
2026-10-12 16:24:30 UTC
Median time
2026-10-12 16:12:15 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
ff7cf6029208a559f0e96d775691c42113259c90a71c92cf444c1587dde51e87
Previous block
0000001d3d663c0ba12cd910ff96e817d42f21eda2e6e64b7a18bacbf5b8b847
Next block
000000df44c174cea5eff019b29678702f58160d775f681ccbc4aacc50718845

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 21288 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
278faf9078124fca4c8884fd38d01ae3… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
ff7cf6029208…1587dde51e87 coinbase1250