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

Block 21404

Hash
000000787a686014304e9b20107f8f507fd9c3138e5c9385390294281f30c879
Confirmations
20599
Time
2026-10-12 19:38:04 UTC
Median time
2026-10-12 19:29:26 UTC
Transactions
2
Size
2,977
Weight
11,596
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
e004dbebc83ea778411090079e28f46d4da6f7d2d38b78aa987ac23328af6502
Previous block
000000bff861b97b876f736d5ac52ee96a4fcef86d233825282332a5e9a77f1b
Next block
00000009aa9bd48fb716e6fbb0d7e6d29d4622b57801e2896cab5566e4e71cc6

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 21404 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
c132cd4c073204572fd0865a5fb19932… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
0321fb4f1213…a30dd7da1a66 coinbase1250.0000031
ca10322230e5…b7169e6e8723 pays to P2MR1239.99996570.0000031