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

Block 5638

Hash
00000066db0aaa66f1d15d79065c0c57770e85a042200b33640349fe62918db9
Confirmations
36535
Time
2026-09-21 15:54:52 UTC
Median time
2026-09-21 15:46:55 UTC
Transactions
1
Size
342
Weight
1,260
Difficulty
0.0045061008
Bits
1e00ddeb
Merkle root
a99c8f968a6abfae65fc41e6df88565f48736cfb93c2189fa08a6bce9991977d
Previous block
00000005904c97ca330407dbbfecd103284c394df2ac96eeb1df95057b0b015b
Next block
0000004baccde21270a34e8ce8f25a050c2dc5efb0209422ad58aad16b86dea7

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 5638 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
a99c8f968a6a…6bce9991977d coinbase1250