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

Block 19383

Hash
0000007b868e1927e4f8a32678422b861c006d8bdfb4d1f5a93a6fc31f72bc7b
Confirmations
21054
Time
2026-10-10 11:27:21 UTC
Median time
2026-10-10 11:18:47 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
4a2cb930bd275414437d8cffda67824dd9274c10508d1759eca0a81ae9695f24
Previous block
0000004342a062a2ddf99be933e35f0cc432ddad47b243737ec886f8c2561d1a
Next block
000000f2c28a2b8cd472f9ecb56373738f835486bf68654ac6547afb32de1696

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 19383 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
2a8571430a14f051b382981ae1d854a3… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
4a2cb930bd27…a81ae9695f24 coinbase1250