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

Block 4139

Hash
000000c8d7c26d1e3528100f650e1b8586d0a313ca2b5ab16a93b375c986c914
Confirmations
37100
Time
2026-09-19 14:37:50 UTC
Median time
2026-09-19 14:29:10 UTC
Transactions
1
Size
342
Weight
1,260
Difficulty
0.0045061008
Bits
1e00ddeb
Merkle root
82f762d51955ba689f51be911932ad857c3f922e8c2ec7d6365fc9296f946a7f
Previous block
000000ba719210ef6686c18d68f9d148a32f856b8ea667f3cffe5d9e984e4e20
Next block
00000036f7c7272def9826002eba64b8ffffd5351cf33eda82d8ccc7bb767c97

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 4139 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
No ML-DSA-44 block signature in this block

Transactions

txidInputsOutputsAmountFee
82f762d51955…c9296f946a7f coinbase1250