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

Block 19446

Hash
000000875fdc36eb25b1a8ce71cf9ed0dbefd2254cad7b5d38037e433603e502
Confirmations
21547
Time
2026-10-10 13:13:15 UTC
Median time
2026-10-10 13:05:23 UTC
Transactions
2
Size
2,977
Weight
11,596
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
4aadd2e921053ba1c72715947738f50984ac774129011a7ea12e807c8c686a86
Previous block
000000566be403e0b135a822ce1e9c699a5615bc527893d617fe9ce92c9bc5d0
Next block
0000002f8c255ebde43a2bf6ebe9276c9187a78b217d12baf5d67f6369c370f7

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 19446 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
e2f4339c4440326cb10d99210e59f148… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
ad951390ca5e…fd439889898b coinbase1250.0000031
349efde1ca2d…abe5d9d4b700 pays to P2MR1240.99996880.0000031