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

Block 20221

Hash
0000012b5999a21395bfe630c0a396dfb37f9b2445b8a649671ef51b40b8b303
Confirmations
20469
Time
2026-10-11 10:52:36 UTC
Median time
2026-10-11 10:44:25 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
ed57941829d37f3dbdfbbba5fe769416190d9b35128bd78b8069ddef4599da89
Previous block
00000043ed98ff8800aa0fed6725e0541c1160ac90714b08c7a4212e4395dd11
Next block
000000f5eb456201b865d83ec4026ab5348291e100afafc299a77789d3eac633

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 20221 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
146893602846481c59497ca25257548a… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
ed57941829d3…ddef4599da89 coinbase1250