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

Block 18207

Hash
000000f03dd35691284ebe9cb236dc511ab56846184fb6e424e8106fba7d4df6
Confirmations
23674
Time
2026-10-09 02:37:52 UTC
Median time
2026-10-09 02:29:27 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
ec8b3a3e799e244f0be0dc745a4b7e71ed59d1bc2bcce87a353f16374cbf9d41
Previous block
000000d3fa6e119a8edcbc9bf975563b80428525fe8b47973169d4a868cecdce
Next block
000000885722d03bddf24a588b882ca483c352d052a8d1de25c437b2f6992b73

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 18207 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
55b65d027eccc87ce55f57e289f6a02e… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
ec8b3a3e799e…16374cbf9d41 coinbase1250