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

Block 18575

Hash
000000d0bc9e79ee2e670bd55744369dcae5d15c73bc23e1bbae0c20022711af
Confirmations
22568
Time
2026-10-09 12:53:46 UTC
Median time
2026-10-09 12:45:30 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
f37aaf274ccbb4d5713d39230e41a579a4348cd56841f4fe70b2e32809f2613c
Previous block
000000d959f9ab6bfc22f1b6845822a9beb16ba45378b3835a9543039aa9bd0a
Next block
00000074c4f5a7766d5b2015e11a50ce6b55dafc49c7aac13babcaf88c661641

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 18575 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
9a1ffd6061a1c45081eded28094c71fe… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
f37aaf274ccb…e32809f2613c coinbase1250