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

Block 19828

Hash
000000362e0cb5b8988131093fdcb811faf2b35ad5552a75243d67a8c0e5766f
Confirmations
22288
Time
2026-10-10 23:54:14 UTC
Median time
2026-10-10 23:46:26 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
f62fda2e8c7ba9b0b7851f136d2f949ab4b73f0ba397ad15ffed75d9810381d7
Previous block
0000000eac01cb778bf6d3c2afbf80cc9cfa85073236622d27041b4d63f5933b
Next block
0000004a0330cd34748cf8d610c398087c20fab9ff6c125a4712a712f41c24c0

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 19828 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
a076fa81022d98712d66e80d53804b9b… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
f62fda2e8c7b…75d9810381d7 coinbase1250