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

Block 19472

Hash
0000009458bee6f78b12c0e472e3e6835e4fb1a6123feb06634e51da0cdd4f6d
Confirmations
22005
Time
2026-10-10 13:57:49 UTC
Median time
2026-10-10 13:49:40 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
8879aadd8b3985123f31c3acf36f3a4a91116f50c773f93c99fd3b3baeb4c23b
Previous block
000000fa1cbf9403c48ba5f7d286e08a4d110d456bc30834464115d0e4ba56bb
Next block
00000097fbf9bdfbfaa09d5439e56ec45705d01928e464cef02f3dba1f5778e6

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 19472 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
d43c9e3de275218508264cbe9055dec2… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
8879aadd8b39…3b3baeb4c23b coinbase1250