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

Block 19708

Hash
000000c0cf902e9852b7dd4a5e737f6131912c315f76379e05476a627565127c
Confirmations
21403
Time
2026-10-10 20:34:09 UTC
Median time
2026-10-10 20:26:14 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
b83be2582d127a58c9d994c5e253006bc6bc09619b9c7469040b45368ebb072c
Previous block
000000d2b8c235e892317f70a910a3aed48657bd8487fe2e09618e1367af23de
Next block
0000008d2af0f9080e880cfa69b90af6c6f81197d4249562478af33a159fd67c

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 19708 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
7430a964847fe9b1d9a3298b671dafe1… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
b83be2582d12…45368ebb072c coinbase1250