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

Block 18434

Hash
000000fa0f955a73cbc828dbc6106d291ef101cd2016e1479d0b0203d344c3e3
Confirmations
22259
Time
2026-10-09 08:59:28 UTC
Median time
2026-10-09 08:51:27 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
c7e4161908abef537e68396a36bb55bbfe1ff637ec9590ffe5da4f46f9f9e88d
Previous block
000000a4c4a914edd882be5bc62e08744aebb708794592e5bff69d7fa4b6e181
Next block
000000a228dcc41ec99e93806a8877e97dc74189b1ca37ee22f04ef9d2f6482a

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 18434 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
1cba6688c13ba64c6069b8996915a8a7… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
c7e4161908ab…4f46f9f9e88d coinbase1250