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

Block 19519

Hash
00000053428645ac7ed99cc03a28062d0bc3536825cdd64c4b215bb6373d274f
Confirmations
22630
Time
2026-10-10 15:15:06 UTC
Median time
2026-10-10 15:06:40 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
febe3ea766f249c5997e1a833ff19bf59477ed22d55e279d581a65be85d59d95
Previous block
000000a8263f858a7c63181b669485dd66ce6288f9f561d68de4f134e49890d7
Next block
000000c62f4c85e46c42c6bf1f3dc3658ccafc5a02b3b5c2537e7982ad890cc2

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 19519 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
d414b18fcae79f6a4a797b0e62675ef4… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
febe3ea766f2…65be85d59d95 coinbase1250