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

Block 20421

Hash
000000599e6462c2f46de62fa91689892f14ccce317b6c6654f3fe182ed4811b
Confirmations
21132
Time
2026-10-11 16:23:55 UTC
Median time
2026-10-11 16:15:53 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
3ca7d9a3f0967e40c2ab4eb6d9d10c36b94a6515f87ba1211cefcf8b54c6e5a3
Previous block
00000091151545595369859eca38942dcd464985f139ed70007f9ef8f5a55dab
Next block
0000009d9f2a575d176bcbf7908aaf7c9cd6d0cd8970ecb2c274b17141e2295c

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 20421 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
6e781d2b4bdbf912fda0cef5e53b7a43… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
3ca7d9a3f096…cf8b54c6e5a3 coinbase1250