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

Block 19245

Hash
0000006f37fcfd2b72326343feae666e1573d8f7c016896c2fc86a97a75ea7be
Confirmations
22306
Time
2026-10-10 07:36:31 UTC
Median time
2026-10-10 07:27:53 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
170b67f480c27881333003939c8aa6f545bd395e2ca1c1a1cdbda7a901852e49
Previous block
000000e1acecc3328d64bc114613e4f2f957b13c2fd01ae409f001f731a4e8e6
Next block
000000ef97b55acaa06431e196807a1c10060b0e31375072fc4f5f56bebf1e10

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 19245 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
17899b5816fb765002032bfe086f0992… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
170b67f480c2…a7a901852e49 coinbase1250