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

Block 18417

Hash
00000033b1f1f21d32012e2ddc18f46c36a89c3100653b6e2f32358117ebfe3c
Confirmations
22331
Time
2026-10-09 08:31:12 UTC
Median time
2026-10-09 08:23:16 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
54783dd0de25d86414a7894afa41eb1486788f259b1bab550c010ba3e5d37f0e
Previous block
0000008e9685ef9232b3775d40bc849bd593c0e9750b533d5f7d057f03d7e313
Next block
00000045673dc3e528044d88f3eca518070395514a31387390ce85dbcd3ca08c

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 18417 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
fdad6c68a2ec2a2fa2079bbd870f7b98… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
54783dd0de25…0ba3e5d37f0e coinbase1250