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

Block 18311

Hash
000000f610e041d200fee3bb972dcbce0f9635391749fa9c1abd7329104720d8
Confirmations
23879
Time
2026-10-09 05:31:05 UTC
Median time
2026-10-09 05:22:49 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
82ef21f384a247da9094b606bfa269600f71851bccdce5d5d1921f8cf50b09de
Previous block
000000785352f1ab1a6b8943bd1ce73efb422eed288bbe9efa8acc07de676886
Next block
000000bc803b23971681b332242dbf7b21ed6e1271191c475117eabb60d9dc91

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 18311 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
6a6f71a29c1bc6346a58beee6d79fd98… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
82ef21f384a2…1f8cf50b09de coinbase1250