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

Block 18914

Hash
000000b1cc67ea53692d393dc6e8309d4ec26015574cb1224a0251e76ca54eca
Confirmations
21481
Time
2026-10-09 22:14:36 UTC
Median time
2026-10-09 22:06:20 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
7b1a79c4179bb11dd5bf807e111bbe8c67c94b4c889cb0495f5e4f8e0cfafa0c
Previous block
000000c216642e348b42d093c3996a15e9a683b7a7d92db89b0963a769b49590
Next block
000000739e4abbde59d44815d66ab8576b3a936e74d47b496d94e5fcd2f4b0a1

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 18914 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
09c3acfc430026f1f9711bf45ed5ea07… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
7b1a79c4179b…4f8e0cfafa0c coinbase1250