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

Block 18795

Hash
000000d1d622aaf094aba2481550dc21b4e3574585d7ac78608373149d44066d
Confirmations
23577
Time
2026-10-09 18:55:33 UTC
Median time
2026-10-09 18:47:47 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
f2d2507dcff55cb0af8008620fa456123d3f6424a175afa1c517e4fd13ce1346
Previous block
0000002012ccf6012bf1e5fcaff36b2d4bf508a79916a89744b39f4fa2b62c0f
Next block
000000410a3b884f86123982281018cb4246c6d442f3e07cba99ff432a964384

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 18795 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
4867d39aa58dd159d0455dbf78ab3422… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
f2d2507dcff5…e4fd13ce1346 coinbase1250