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

Block 18607

Hash
0000003b2e5f4ca26df789f33de765da89bf922f1032633950cf68f3b3680524
Confirmations
21547
Time
2026-10-09 13:44:47 UTC
Median time
2026-10-09 13:36:45 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
b3ff6f0222ed9cbb727ad5d990317ccaf9dff360f67dd5bb7486855ccf955569
Previous block
000000bdd3c1734916ec122a3e5aa0faa543dd78c36e8dcb50b85245f312a38e
Next block
0000003802f99fb33f0c9fd92b7ec8dc9be54002293d286c8eb4bd30e9508870

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 18607 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
d594a0d2ac9eb570684f2ae4b2b132ea… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
b3ff6f0222ed…855ccf955569 coinbase1250