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

Block 18520

Hash
0000004e0b440292a38153bcacc00f070b624c1e64d47217ac2ba9ea1a49de7c
Confirmations
22427
Time
2026-10-09 11:21:35 UTC
Median time
2026-10-09 11:13:36 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
29e385206bccf27a8e02c7dc29cdc0613b3cb0a7e5e7241d1e5df29e4b22bd42
Previous block
000000ee35cfc63933bce921028ebcfa23b3835774b77dbd120202f06429656d
Next block
00000060b862e32caf355422a992d16f81188e1be51c45078e817482b5e55a0d

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 18520 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
b6e8a11adfc891567fb347149985a9bb… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
29e385206bcc…f29e4b22bd42 coinbase1250