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

Block 18842

Hash
000000c5353dfd8741c49c812cda0b3a208a7a6df070669f107f2be2dc07abd7
Confirmations
23505
Time
2026-10-09 20:13:59 UTC
Median time
2026-10-09 20:06:08 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
a535ec32e51a454e2aa62d046cbfaa5afacc7297615978e2cfffbe5f11950431
Previous block
0000009a8a2ec30871a7f58188088472c51ada18a37df758c6c8eba039bc59d9
Next block
0000011884ab579887b3bba6be44256e127e570407731257b69cbf78fae611f0

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 18842 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
7213037c2f9b6d2d7e1d0423708b0199… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
a535ec32e51a…be5f11950431 coinbase1250