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

Block 18672

Hash
000000e0689371dfefa231f820950a26f9ce5edee1e326c15277aa16c957ead2
Confirmations
23346
Time
2026-10-09 15:32:01 UTC
Median time
2026-10-09 15:24:10 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
9e3625b6cb3d6f6f096c82bef6ae66d7ed097aeba173f8664c6a2acd6fc4707d
Previous block
000000df2e10b210584e61b965119ae73c2642bc93a5b89a580400ca7bd7f159
Next block
0000006070cb403150689ac86317a5b63296b51c4a5822dba077709465a34e09

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 18672 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
a685a0cad3bc4e6d572456bc1d9494a6… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
9e3625b6cb3d…2acd6fc4707d coinbase1250