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

Block 19992

Hash
000000a588979fa17134cb1b28babcda32466f898835707b60c94a38b682abc6
Confirmations
20886
Time
2026-10-11 04:27:00 UTC
Median time
2026-10-11 04:18:34 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
c37a4c86faa73efec607c4c56c2672bacea4cbc3d8cfcc62d98d7f97abdb9ff1
Previous block
0000009042180acf27690c0cdbfd97e5297e2829265abf35ea56b3872b4204a8
Next block
000000d2be845c91bf88ca450f92be7a2a471fe6f53a1669b85303d63ec9fff1

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 19992 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
c890f46dc1f5dae0816c9920dbe2b052… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
c37a4c86faa7…7f97abdb9ff1 coinbase1250