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

Block 21005

Hash
00000103e5125aceaf0c2d3606b4c8f37518b165d4d7e80dcbca4cd0025a83f2
Confirmations
20207
Time
2026-10-12 08:29:21 UTC
Median time
2026-10-12 08:21:32 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
4ceea254e5eb04bfe258cea7b1d1a87a26335f7dbc9d1d505ccbed60ccbc8575
Previous block
000000351254154e60b6e891ea145694b1036ddf4c5c16855afd56120be41d3f
Next block
000000906bc398b4e2852e356e2207a7af22b59aad17cd640cf052be5403be51

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 21005 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
c847deace9d7d8d501dbd755de523388… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
4ceea254e5eb…ed60ccbc8575 coinbase1250