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

Block 21812

Hash
000000cf6253c79584727c8106e961d65e04ce5856af0eeedcd3cdc5a54a1abd
Confirmations
20267
Time
2026-10-13 07:01:19 UTC
Median time
2026-10-13 06:53:09 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
8588cbe8c1b28a085ee17eda1d4d8aded8945c4216301ebf462dd07a5c96dce4
Previous block
00000033b568b5679be051e720063eb5e2194560389a180c968f6133d109eb9d
Next block
00000043880ee89b6b8161c2da5eb0421c52665500d43e0b9a869a0e594047bd

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 21812 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
7dfb29965be25c59ac9f6312499e9636… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
8588cbe8c1b2…d07a5c96dce4 coinbase1250