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

Block 18192

Hash
000000b19e8910e425c2118c1f22a811005b9c6ad425514fb17bfc64ddc621b2
Confirmations
23117
Time
2026-10-09 02:11:47 UTC
Median time
2026-10-09 02:04:05 UTC
Transactions
1
Size
2,771
Weight
10,976
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
8b799018d60d41657ae298694a2bc4eedfc40be3aeffdad52f3d190287e292dd
Previous block
0000008af9a8ff04cfb1e7f1ba9db11068c592af153b15790faad3fadf484a66
Next block
000000fca4e89d4f3e8021e17c0aa73807c2928df776124fe528a2b7f429b52b

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 18192 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
544f94bbaa8be08e0fdcd289a08ed52d… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
8b799018d60d…190287e292dd coinbase1250