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

Block 18998

Hash
000000fa976a1744e8671f75f0b99486ccb7e564e1e2ed9adf3a96c48943de10
Confirmations
21738
Time
2026-10-10 00:36:11 UTC
Median time
2026-10-10 00:28:05 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
031dc97ded684050ff31df212d9d69d23ae9af9942b00d7c69c7cc9c48f84f0a
Previous block
0000001bb8c41737644bbf0f8572e5b8bcace3b95a4a8a73a44bafff6e7e2c73
Next block
000000e63c831c5e59478f7164284f29b4de47ffeac4184d220d2ecab8ca01c9

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 18998 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
8ff2ecde720a0ff3bcc067952b80f786… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
031dc97ded68…cc9c48f84f0a coinbase1250