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

Block 19447

Hash
0000002f8c255ebde43a2bf6ebe9276c9187a78b217d12baf5d67f6369c370f7
Confirmations
21523
Time
2026-10-10 13:15:00 UTC
Median time
2026-10-10 13:07:02 UTC
Transactions
2
Size
3,046
Weight
11,665
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
690cfb961c9017527bf31eb3c06d9211a8f73f3caf4a569307aed87228428eeb
Previous block
000000875fdc36eb25b1a8ce71cf9ed0dbefd2254cad7b5d38037e433603e502
Next block
00000015c534fda73cb431db7131bd65d5a961ff16d767adbd6fee9b23e27e4c

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 19447 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
060640a81325615ccb3f0414165d917c… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
0324b2d7ade1…011961486a51 coinbase1250.00000344
376aaddf46b2…5af8c587b9ab spends P2MR pays to P2MR120.999996560.00000344