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

Block 19523

Hash
000000f21208c16cbf9d78a0a73e1ac0e26111300225c639196c1d3504b85db2
Confirmations
22557
Time
2026-10-10 15:22:00 UTC
Median time
2026-10-10 15:13:27 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
a9e09b03e336464340f944b9fc98f6df8b815609a89e7022fb0fa3078a27c7ed
Previous block
000000deddd29fa88c09097c98b6b660af53291cf28c6e08ed1e391d82e0176c
Next block
000000e80ac5c08fcaf2cc3188b8ca16e07c117c90a5d1ec2d517e35800204a5

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 19523 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
e3a282199d5341c71d5e4f05dd65db68… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
a9e09b03e336…a3078a27c7ed coinbase1250