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

Block 18492

Hash
000000b3c22310f1fbd7ec1daf652d64d09078e1a80a0340b52a8c679c313136
Confirmations
22244
Time
2026-10-09 10:35:54 UTC
Median time
2026-10-09 10:27:12 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
9bf949a736bfea872afd7d0349b72ef304a7acf7bddbc44f6720cc6a32b1eb2c
Previous block
000000be62fb1555d486c1c740626e72612a43a8c2d8d181fc403724403f60b3
Next block
00000119c2dc08eb4ed6ed4fa7b4f549eaf7294b4521aa3eb877cecff1d6babc

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 18492 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
def3417af965f7810e221eec22288934… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
9bf949a736bf…cc6a32b1eb2c coinbase1250