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

Block 18459

Hash
0000003baab38a6bed7ce16e3c00d519fbf99821bf310ddcf874f355ad84a530
Confirmations
22581
Time
2026-10-09 09:41:31 UTC
Median time
2026-10-09 09:32:40 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
f8af93575b31ea3e85a5b8beae9f560a3188aa57a70ad461eefaa18d39566e03
Previous block
000000213d78e3015c54d6cd500dd1c18f349c2c790aeb3a97f00433846b0a58
Next block
0000007c31c7b59d873f0d135f489fa7794b5687265b59cc247284c29765dab2

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 18459 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
da72343655e57df1a200d1d2dc82e18e… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
f8af93575b31…a18d39566e03 coinbase1250