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

Block 21854

Hash
00000086574bf5f011809065fcf44f454e0c5d0fc013d3b1d985765ea14d213a
Confirmations
19316
Time
2026-10-13 08:09:34 UTC
Median time
2026-10-13 08:01:22 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
0533818f068a4a37e5086fe74ab16529447f4f5b04a1192b3839326ae56efdba
Previous block
00000097a3e30c2839526c3f3a56e6539109a10b3539392dec2815374c099d80
Next block
000000ec2bf70c1aef84e029bea8139d2332334baa49c73e0b32217e56f4eccf

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 21854 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
0bc5aa79e40f76df3ab4e526277cb7e0… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
0533818f068a…326ae56efdba coinbase1250