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

Block 18290

Hash
000000fb96b32728c8d0d05b4a13b3f8474e351902e067bcd3548502fc22ab88
Confirmations
23819
Time
2026-10-09 04:55:23 UTC
Median time
2026-10-09 04:47:22 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
fdbfae4575c806a80618c0c6e6e8da3cd41ca1587d52643d1809ff8e3042f326
Previous block
000000c535ba122d23ddbb00fac0a2f2648da6dc4fc943dcfebdf2fdf3cf4598
Next block
000000d3b472d6dabf9f62fb3037f5a0bc2f4b5317ce231ca5fabe74d3f729f1

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 18290 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
fe030a1a845530a412561f704edb4f31… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
fdbfae4575c8…ff8e3042f326 coinbase1250