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

Block 19365

Hash
000000a33d713644cbfa2855992dcbfe7dac99cbe5725ba631467671917c47c8
Confirmations
22499
Time
2026-10-10 10:57:27 UTC
Median time
2026-10-10 10:49:12 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
df88939067588d230dee2da84bd1bdb1f7edff215d3fcb9ffbeb2871f96234c3
Previous block
000000be29e044796f303cba064b5cbd9ffe60aa75f3e2edd2d982fae97cd2ae
Next block
0000008e790bc293425e801bd2af83a83efb8cfe5b35d551a78d15922d7f6cc8

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 19365 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
2831bc0a036e30f5995c65f929572a9d… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
df8893906758…2871f96234c3 coinbase1250