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

Block 18689

Hash
0000005804dd54165bd6c2a03626b0b4943ad57c3bfd8a9d5bfb62ec0ff04610
Confirmations
22257
Time
2026-10-09 16:00:01 UTC
Median time
2026-10-09 15:51:45 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
54e675f4b82a3b599fa72c9d0c5cceda4a34e32846771b8f3c5feeec042620dc
Previous block
0000008a1142b950cf8eba7942ac40b88a05f405dad82d9cc6b1456e909826ea
Next block
000000e64a22a771e4f2b28c60a50130902a5a4ed1607d1a147c4698c2769892

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 18689 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
eea37259a17bb8a69c33939746e18114… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
54e675f4b82a…eeec042620dc coinbase1250