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

Block 18325

Hash
0000004af7a296d90d5fca898b9447d1df3a989cbab3e0f910e310a8a865724a
Confirmations
23926
Time
2026-10-09 05:55:01 UTC
Median time
2026-10-09 05:46:15 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
7489bbac79a686a41e1664a1f21db436c7935c71d5c7dba2a0223c4a9b3bd866
Previous block
000000b3313936d8b91ceae05f0ab9f3b2ec31ed000f5740b81523113049d2d5
Next block
00000029b774f49388c47d9f5c85ef7fc037bd3d738489c978b2a54d52e88633

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 18325 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
1cf211a6216ec58dbc9dad89aadfe696… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
7489bbac79a6…3c4a9b3bd866 coinbase1250