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

Block 19357

Hash
0000006d90f50e486bc9d2485e98bac7f8ae54a3f33738929751d23beb113a21
Confirmations
22240
Time
2026-10-10 10:44:23 UTC
Median time
2026-10-10 10:35:26 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
b93dfea65b9d69eae21477d178035d5f3437e3222885f477ace1ca30eff56839
Previous block
00000042b83c3af371c872bfdb686dad8ba6ef14b1eb723ada9d3dd9d227f303
Next block
000000e2b3b078772817ce83618886890b31c04d71a99ea5e20e267c51064ff5

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 19357 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
e64d578c34e3e1a18a4dfc0443ff2249… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
b93dfea65b9d…ca30eff56839 coinbase1250