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

Block 19199

Hash
000000b0434ab2b92c65d0f6b36478931653fdb970fc0e0921709994119fcd1a
Confirmations
22239
Time
2026-10-10 06:18:08 UTC
Median time
2026-10-10 06:10:14 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
aed657a97a45dbe48b3624be7b646a858cbb01397b0604ebaa0061dedf9a7288
Previous block
0000002eb7162bb4e96b677e9512283d840dcdd5f72679de1ecc2d7867c91596
Next block
000000d69e34446d8868638c78db3cac3369fafdd374a7d578c178faa9be0ccb

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 19199 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
409f3ec3f619e6975896648afadae05c… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
aed657a97a45…61dedf9a7288 coinbase1250