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

Block 18490

Hash
000000c326e39ae16e63f4e8ca021c37d4723942747ccb16c6f0005965763054
Confirmations
22216
Time
2026-10-09 10:32:27 UTC
Median time
2026-10-09 10:23:39 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
519a64f17224f6378af65a21c7b0efd418138a3392a40847de6b961b653d96cd
Previous block
000000cb2b5e14a411c9830aaf3fedac8592f1364ef2981a14537235ae898627
Next block
000000be62fb1555d486c1c740626e72612a43a8c2d8d181fc403724403f60b3

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 18490 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
5dcba2feb648c019efb29d8fd0e3cd44… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
519a64f17224…961b653d96cd coinbase1250