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

Block 18185

Hash
000000268ea75725d5b4c1ea360e6408f498600e740086c32613d2873da16867
Confirmations
23072
Time
2026-10-09 02:00:30 UTC
Median time
2026-10-09 01:52:31 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
8cf6bef583ab6d694e186a944f29a34d3fa2f3f37017c8f4dedc045e907577ca
Previous block
0000010d28d81c20bf58fb11620ddf4607e26b6df13f68bfdf0a3666969a6f7f
Next block
00000069390845da3c3b612f943a857435f80b51344246e90ac8fefd98dd80c8

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 18185 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
55836fdeb4ea0e85f5dabb141a6bc2c1… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
8cf6bef583ab…045e907577ca coinbase1250