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

Block 18474

Hash
000000dbe09cfe5ba9315c969eb3d3f690a34ba6baa8aec7d71dcb0ccf75da5d
Confirmations
21895
Time
2026-10-09 10:05:52 UTC
Median time
2026-10-09 09:57:26 UTC
Transactions
2
Size
2,977
Weight
11,596
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
6490dcb1611338605003b6d730eacc2facb06bd897718ae3145b57c8ca659cee
Previous block
000000e48f0c24e9e79ec96125543f2f8d13c798b2dc89cf5be03bbc1cda2f16
Next block
00000106a2e8598d440ff10f06c86ff3923cf28dc23eb75e4a94b7de5325b919

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 18474 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
237b570e5d2ac0c91c43ca6fe4ffc01e… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
9a0d6ad704af…6cffcc00398e coinbase1250.0000031
ae339cf6b73f…62bc7b2bdf7d pays to P2MR1217.99989750.0000031