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

Block 21679

Hash
00000124d8e10f42523c50851f1a8f1e1554bb1bbc5c31e79b8762b7f880d96b
Confirmations
19656
Time
2026-10-13 03:19:59 UTC
Median time
2026-10-13 03:11:39 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
01ae08c52bdf8379483460caa1fcb85d83ab0171ffca598054f2252e517a3f95
Previous block
000000dd2f9fa37dc53b67beb06aed250c81b3c5885eaca571e11f567baf8407
Next block
000000554d2db042c7ae5fd1533c7faf2b54cd61cb44bb0e49d28e31e3cfcc23

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 21679 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
a0f39a1d06bbdb29b9c379beeeb94a23… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
01ae08c52bdf…252e517a3f95 coinbase1250