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

Block 18198

Hash
00000021c03f0971e9ce1295d3d24bc1356f8dbd2ad003b0e96c742d5aa30d1b
Confirmations
23295
Time
2026-10-09 02:22:27 UTC
Median time
2026-10-09 02:13:21 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
f30e0c9a439ecdb6c3778a7bd76fe0cfba570e12094ff41cb4cd6347817de3e9
Previous block
000000e5013032bc4f1ff937a32c23acd1ad496aa375bff26ac7bed8421e63eb
Next block
0000002ba3c3445861ce17fabfb9385852f873b04a9fd9c8e55872d3ed5cacca

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 18198 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
416c5cb8f0166cf109688916ea41ad9d… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
f30e0c9a439e…6347817de3e9 coinbase1250