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

Block 25640

Hash
000000f8e5949362111777df93b0b6e43125db3ef849b9b369fe8288a90af064
Confirmations
14747
Time
2026-10-17 16:07:23 UTC
Median time
2026-10-17 15:59:42 UTC
Transactions
2
Size
3,166
Weight
11,908
Difficulty
0.0025748176
Bits
1e01845f
Merkle root
5d05f8472fe576b26131739db8556a0c481403416331a6d60a607c18482d1e3b
Previous block
000000b131c498f1c9287184c5d80c17847bfd5a5e40279dd5bd806087b77e17
Next block
000001180faee1c015e7d28ae69ca90387c8f832dfa69f4ce30559b00ef0a87e

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 25640 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
3f391c0f0d1540eedd99f6635263db1c… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
04d07eb4d631…b92f536b0990 coinbase1250.00000467
b120a09a0c5d…db4ce5c5802b pays to P2MR220.019971930.00000467