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

Block 19220

Hash
000000cf40bc9eb07551bc9379ef6eb0fe3452ee84bd79e1989fc4c94b1a15c4
Confirmations
22730
Time
2026-10-10 06:54:26 UTC
Median time
2026-10-10 06:46:08 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
bce11e41c48488f16e1c8cdf96f4843a7c39ce2b55e489cefca47f016ff32bb4
Previous block
00000064271a7741f5fe343e8fca2945c9258b9604140d76b9f7254fb37a80d3
Next block
0000007c931a8251cbe9b683f7fb40fa9226314678f74e348ea7eb6990fd640a

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 19220 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
b806d2afd5005209a34fe51d5ea75929… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
bce11e41c484…7f016ff32bb4 coinbase1250