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

Block 18263

Hash
0000006615184be22cbe866ed9e1dea158ad567bfacdf97fed3a7c9e74bbcd50
Confirmations
22647
Time
2026-10-09 04:11:02 UTC
Median time
2026-10-09 04:03:03 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
b270496131e9706517340d53e8d855267acdba4d4c3d210b8b9da206fd172cff
Previous block
0000002c329bde8a60a0228be9f136302321a8b634f1ebcff9c1f83e7f371b72
Next block
000000e500e17e54a4bfb16bcdb5c376d8cfa75cefad1be30424dc5e1d2b9c8e

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 18263 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
cd199bac1b1ed04a4569263af0351983… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
b270496131e9…a206fd172cff coinbase1250