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

Block 18288

Hash
00000099a5f6f95ffa34b4aefe0ddb9ee6b09ea62d47b99bb60009e6226a6095
Confirmations
23806
Time
2026-10-09 04:52:13 UTC
Median time
2026-10-09 04:43:55 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
1ece6ccc8c95d249615f2883d8444b31369f49f9231e34c3fa84b1fa31789579
Previous block
0000002a2ef8b6c4f28a19b6283b9ebaa766feadd8d4b4d947ba9538bad36fae
Next block
000000c535ba122d23ddbb00fac0a2f2648da6dc4fc943dcfebdf2fdf3cf4598

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 18288 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
4b3e222e06b28e39aebb350601086591… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
1ece6ccc8c95…b1fa31789579 coinbase1250