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

Block 18274

Hash
000000ecfd1237c53c29a55f1aca38a7bdc8e504402998bf51b9dbfd28c1805d
Confirmations
23220
Time
2026-10-09 04:29:31 UTC
Median time
2026-10-09 04:20:39 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
e1d1a27526095f9e31591b278ace49ff9135931d25767a35549aec664b1857bf
Previous block
0000008ed4f470f80b1f1401fbca3229bcaea974d42c881be223f54fbf7504a8
Next block
00000024e3941005e6b5e6e6a442922857a6e88974d5c852251a49f389e0d858

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 18274 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
3530decc2ebf338bdebfb84307b6d63c… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
e1d1a2752609…ec664b1857bf coinbase1250