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

Block 19488

Hash
000000d806af1e9601d5f2a0c963831c574acbdfe19e9b28c28fc8fcae772e1f
Confirmations
22513
Time
2026-10-10 14:24:18 UTC
Median time
2026-10-10 14:16:16 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
cddbb352dff4793fc1040429f7ab0a2ea1694f1d60db45e16040701b18e2932c
Previous block
000000bb366099fe4e4929e051393ea96d0f7ea0817a117a7588c4b48b57b6b1
Next block
000000135b68ec517efdc42fb0f605ddad36a71d5f8c709b92c4a366b3f39b7c

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 19488 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
f2d9aa472b3b8f76f0a3006c57912c8e… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
cddbb352dff4…701b18e2932c coinbase1250