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

Block 19913

Hash
00000088718cf6a34cc94a82caf1239072fa89167ae8a511d9bb1e4cda16872f
Confirmations
22197
Time
2026-10-11 02:13:13 UTC
Median time
2026-10-11 02:04:28 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
6e6f9da70214c92e9ac87da49f2538b7cc234c53d109586009a5fc1df6c85c88
Previous block
0000005ff49ecc7eaf1db81b0e15231b08bce6b11d724056f8602ceb1eed9b33
Next block
0000009cafcf73b20089528d8b64d4df75ee901d65a1f2ae59f6a3f5c2646204

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 19913 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
375e4d5936676efdcb65fc4b7b951aaa… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
6e6f9da70214…fc1df6c85c88 coinbase1250