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

Block 19404

Hash
0000011ce8361ff8bb38211aec223a0e01394d0872f9ed2a2cc52ecc00e111a1
Confirmations
21665
Time
2026-10-10 12:02:34 UTC
Median time
2026-10-10 11:54:32 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
1f76b786e650f94e9977dc7d8bace846f9567f3faf35ee3ad993ff9bca0aedcb
Previous block
00000084b988004b2e6a147147cfcb38fe7232b2fb783606de0850594e0cd48f
Next block
00000071aea6271e7bb988ee513ccec7ad6a429775836cedc0c9815c1d4961f1

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 19404 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
1a9369aa31af149f9a831f5809194f86… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
1f76b786e650…ff9bca0aedcb coinbase1250