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

Block 19662

Hash
000000f8815caaa06c130b1fe782d2490d0e90382413599ba2e119d35d6c26c3
Confirmations
22539
Time
2026-10-10 19:17:00 UTC
Median time
2026-10-10 19:07:53 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
52f35b0046a00f5ca2c0622e5dc052d0f6e3b6513c41ca71c07d9980b5b6890b
Previous block
00000017552b1c1b4827da8549e790c62a7934d328157bfb6f802feaed77b025
Next block
0000000e461b714e8f9860bcdfd62d6525310038f166b505ec01233b8ff0ca5c

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 19662 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
8b940a1e77d8ec9fec3ca2d40eed5236… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
52f35b0046a0…9980b5b6890b coinbase1250