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

Block 18445

Hash
000000575a17ba8eacf5b07a1b9fcb15c3768db4f4da74f2be1ff42bdb408415
Confirmations
22390
Time
2026-10-09 09:17:48 UTC
Median time
2026-10-09 09:09:24 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
6ca9edcb6b7e9b908364ae75ff6b4dd1ea22e708e24a6906adb1713d1423fbc0
Previous block
0000001dac4b5492ba2b38f21f4c60789017820ab4ca110161a439b0c7f022e1
Next block
000000e0b1356561a68c20859fbd65cc419b8dbcce6151b50fff4cd0227bf331

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 18445 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
9c8b4dd00b5797fb5197317005cd65a3… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
6ca9edcb6b7e…713d1423fbc0 coinbase1250