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

Block 19786

Hash
0000004b1c08fda3b3f77bf6da0a503f9470b7ae198db18c4cc2b987ea4ab0a8
Confirmations
21418
Time
2026-10-10 22:44:47 UTC
Median time
2026-10-10 22:36:47 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
a3b031d1b0af0257bf85b8d8c5d5425ac32ac3b3a1db20f0046488e9621b3320
Previous block
000000f76e2e37bbf68e1c9921d727e6a7762b9b79cd4e8653d016ce220618cd
Next block
0000011036dd3f815516efe2eff205d63da28f1d04891892250af8d39f398f3c

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 19786 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
aeaf1c96e274d51c8a3ce35bfc9262ef… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
a3b031d1b0af…88e9621b3320 coinbase1250