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

Block 18885

Hash
000000bd591617a04ddcd20b9f29f014a7bab94488e42d1b7b1f1bf8ddaa4cf4
Confirmations
23065
Time
2026-10-09 21:25:14 UTC
Median time
2026-10-09 21:16:44 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
31c86fc31612b008f26071cc75858938b543b1abd41a3ba3d7f774aa5355b1b7
Previous block
00000088b9e1b8e08b6635064a4be068726fbc934dd6728ca4cf3ac96d3f6bc8
Next block
0000005e3937f94ad4226e9e9ed10e0a6939e5840047d4ffb517675cdc382bcf

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 18885 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
66c8180575a01c6c615c6de96151334e… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
31c86fc31612…74aa5355b1b7 coinbase1250