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

Block 18965

Hash
000000a3bd3a32b01486814a1ae627f91c3bbc0b8861f14e22158b9f446c8df7
Confirmations
22770
Time
2026-10-09 23:39:57 UTC
Median time
2026-10-09 23:31:19 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
1b9b7e5fc1b0c0e81aa2a7ac4990a157f25ffd8d3e81d25530025b0fca21126f
Previous block
0000005fb673ac40c60d330bb5c60bc841928eccfe2db957c313df5505768fa9
Next block
000000c432e0f893c7233b3e2bce4e8ae8a1ce17abe41d65390b5a185f99d08e

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 18965 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
05c2585929e459fba7dc37df38455f12… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
1b9b7e5fc1b0…5b0fca21126f coinbase1250