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

Block 18992

Hash
0000008e91461f32bdb1bfdc35000e31056d4c524a799fc637706e5e79d0b208
Confirmations
22013
Time
2026-10-10 00:25:52 UTC
Median time
2026-10-10 00:17:48 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
89b2a368f42f29eddafc69ea4c691ef050962f88b0675037db78a20ee2d2302e
Previous block
00000086087467beb26a6f284f8a0c1ac7e828e51b917ee846fafcc64a5c6fc9
Next block
0000000bb526320a6a5f0776ffd0c2a6c5fe84fb1b2f284da6ed96f741d1c079

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 18992 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
50082ecf195f05890baee1871d2eb1af… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
89b2a368f42f…a20ee2d2302e coinbase1250