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

Block 21849

Hash
00000113ab32e2aadcfc046773c9c62aed625d5e882e9936f03fdf2c2018f3c3
Confirmations
18675
Time
2026-10-13 08:01:22 UTC
Median time
2026-10-13 07:53:21 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
0f0709a517ce8a28d83e07f05a7347274c54fd7db84919f7289dfb476c0bef05
Previous block
000000defa3d37df0dd0d6b7122d7eeb5f3c74707f02ebf9efc96e9cec50abb5
Next block
000000e68ae1fd532e7ca5639190bc2c6de0feda715b0ab6ffc9049a0f50175c

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 21849 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
b54a8bb8e34252e567ac33c132c96dc2… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
0f0709a517ce…fb476c0bef05 coinbase1250