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

Block 18171

Hash
0000001de826c8986d62f67c0e0d65c18a7f65f5551c721b1b1298b8bcb6b03b
Confirmations
23450
Time
2026-10-09 01:37:19 UTC
Median time
2026-10-09 01:28:13 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
f51c5a7130c329fe3a31041db3badc143210004449732089f0356df0b6c0c661
Previous block
000000bab40095cb6297dd14452128a276bd5678791740aa098ea4ccab50c606
Next block
0000000b49026f313cc1cef1604f2e71901400d62558bbe018857f88bedf8b5a

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 18171 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
f007ad0405c5014a5d02326c6caaea32… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
f51c5a7130c3…6df0b6c0c661 coinbase1250