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

Block 19804

Hash
0000006a052983ffbcc27baee533c5e9246cd1d41cc7e62d9ec089c9448bec6a
Confirmations
21634
Time
2026-10-10 23:15:16 UTC
Median time
2026-10-10 23:07:00 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
3539c2a292a910e5062f51a16e70132eb11da27ab49222171f86e7db9e4b901c
Previous block
000000b0618f7e94de0a3e05befb7e60ccd4e1ff221a01007b2ba41e553cae44
Next block
0000001c3bbf6131073f1e7be7a20042fe5a24cc9abe816cd765a818866db6ef

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 19804 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
455b71ec9cc9bdf76c64fc719cfaa732… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
3539c2a292a9…e7db9e4b901c coinbase1250