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

Block 18298

Hash
00000097b44eabcdc86f87f09ec9b00d7ea4c86df103bd8ddb814cdfcf416826
Confirmations
23842
Time
2026-10-09 05:08:47 UTC
Median time
2026-10-09 05:00:40 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
447c253d4973c4b384864f7ccd52f847307859ce1c269bff2657173d25dd0831
Previous block
0000003d16c01ada494b0f4c059e5bfbfa2aa601bd486152da9e2f44df36d6c8
Next block
000000c3cab1a2646e0d28a67d5c241217577963c6586b3f5bd9c7b76fee4159

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 18298 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
506607aa38c2e2002417c85b838c5824… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
447c253d4973…173d25dd0831 coinbase1250