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

Block 19831

Hash
00000000139b9b461e8402f68d106156438d91257367138ff86c836f46289ae3
Confirmations
22614
Time
2026-10-10 23:59:12 UTC
Median time
2026-10-10 23:51:03 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
18afdf141bec6475d5e99a5f2c7063a15805d66734da14f6803bc43cc3829299
Previous block
000001182b4f1c08dd687a90ab6e0cc83c50ad7994ab7ba7b981c70feb8ed229
Next block
000000ed62b9a556be46de2175cf451647fea16b176027988188787b65e91426

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 19831 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
24c1f126d7906de846c7aca15c7aeca5… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
18afdf141bec…c43cc3829299 coinbase1250