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

Block 18249

Hash
000000f6ab5587a03bae10111fa00ff6f7fcb78d5c77aa6b4edd0094d542c809
Confirmations
22517
Time
2026-10-09 03:48:23 UTC
Median time
2026-10-09 03:40:10 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
f9b55504216ebd0c7a28a253ac1e7153dcae58b24a5badab90f2ff68bc76c751
Previous block
000000d72794ef7923671443f5e9a0b1c70d2c2535f450f0548c472419fad471
Next block
000000756531e63924567964c0c5dd825d6744cb10dad35a78df5a90a92e5344

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 18249 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
e546fb906a81aed60191effe601a9e87… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
f9b55504216e…ff68bc76c751 coinbase1250