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

Block 19428

Hash
00000109f5e11edc0fb8991c95b6931bf520737eefd0bd89aff0bf27fb6e8bfc
Confirmations
22347
Time
2026-10-10 12:42:55 UTC
Median time
2026-10-10 12:34:42 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
2417d603f4750a635a02ed731625932cbfaeafd5ddade788358b98218a078899
Previous block
000000750205630f3c27580736a961be45898e4d48e301d36baa4c05d8d2be1d
Next block
00000008bcbc6fd74b6b72dda1988c2589bcbee55f5dd4a6fe5bf8958164a8e2

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 19428 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
f55854221159cab2bfa78c63ded90854… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
2417d603f475…98218a078899 coinbase1250