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

Block 18584

Hash
00000018415572893a4bf76286910cd2845d1e5b4764492aac6f7a0a5547acf4
Confirmations
22186
Time
2026-10-09 13:08:07 UTC
Median time
2026-10-09 13:00:17 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
310cb45a666e3457b83c32ee0e832f2000a61c3a98b22fe9d60aed59a7fce220
Previous block
0000006494d7a457b903242daaf8a692bd6c40109c650e110b299628175cfbc0
Next block
000000f3c468ca22e2decc062563575cbcd6dfd4a88a4dd637e3ee5d3eb72260

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 18584 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
7ade12f0866eea62bb32ef63a50ee071… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
310cb45a666e…ed59a7fce220 coinbase1250