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

Block 18222

Hash
00000050a56da95fcf31e65d1a59331db41c11e3fa47602a6872c4279e1a6687
Confirmations
23905
Time
2026-10-09 03:02:21 UTC
Median time
2026-10-09 02:54:29 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
7d82590990f1286e9e1527b28ebd539265bb40189f46e9c3995d87996da9ed43
Previous block
000000ce42d7870a59d1af6652e45051e93dc2bd9c3a34e083b146e34e4f330e
Next block
00000089ea0e731b091ddeab4199540e8917367fa35c137863cd1f37f5c21321

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 18222 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
204bcc2bab211effc7a207abbf02cf12… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
7d82590990f1…87996da9ed43 coinbase1250