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

Block 18530

Hash
0000009bc1ef154a85380e2f1bcc0e04f52213654c55313a1c4259e29fc83ac6
Confirmations
22067
Time
2026-10-09 11:38:49 UTC
Median time
2026-10-09 11:30:35 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
faaddeb379528ed4add7d5383c068f323e69ddd50ddd21203d773aaaa0f5477c
Previous block
0000007e44e7efa0cdc0d32890884fe624c6b53d95b6dbcbc352c06b5d8f82f5
Next block
00000087d252edaa5e4d7d16b17ad4409e75e3d83646fb8395445a782e1de321

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 18530 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
eef81d345ed11c8ab1e7d993c9b517a6… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
faaddeb37952…3aaaa0f5477c coinbase1250