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

Block 18131

Hash
0000005bbb6a1ca258fa971acaea0654dad860b270bef67fcc187cd1c76cc0f0
Confirmations
23964
Time
2026-10-09 00:29:25 UTC
Median time
2026-10-09 00:20:42 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0040172004
Bits
1e00f8ed
Merkle root
8816227d1b895ce45fa2867436c630740a921896d18e7bdfb6871b652cdea254
Previous block
000000a980e05db48c4a99d2ee4b73d0d49cf1c39f75ec252953286287f68c85
Next block
000000a1f2b9858704032fb237dd9bec11e4e40325e953d55057c5d93faddc58

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 18131 is below the activation height 20000: nodes do not require this signature, and only log the result of checking it when run with -debug=validation. The block producer adds it from height 18000 on, so that nodes can check it before it is required.

Status
In the form M2 requires, followed by the signet solution push (the classical signature)
Signature
3018a7dbe8784a3092fb24833ed91638… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
8816227d1b89…1b652cdea254 coinbase1250