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

Block 18247

Hash
000000a8a048d009c3c90d49a81045c3451661938c287bf3aef592dc16c241d4
Confirmations
22655
Time
2026-10-09 03:45:01 UTC
Median time
2026-10-09 03:36:32 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
682994f49e356797e0ca0718f31563c3f8a3a21d9f22773d9e2c6d9889096aa4
Previous block
000000c5beffe1d580b5e9c643dabd7dbd8f84927cc13c73dc7c96a60f46d0bc
Next block
000000d72794ef7923671443f5e9a0b1c70d2c2535f450f0548c472419fad471

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 18247 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
aee9e4b8667d5293dbbcdd4d4969d607… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
682994f49e35…6d9889096aa4 coinbase1250