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

Block 19091

Hash
0000008c4bb1eeea8f44318e794734101a4d99f6bc56799a784450d71c4260cc
Confirmations
22348
Time
2026-10-10 03:14:53 UTC
Median time
2026-10-10 03:06:32 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
ed90cb55324f6d4410ab6595b947b7937db77015ee68e6be01a59d874af24f1a
Previous block
0000009f3fc51b896fc2da82c97009d78ebe5f0f356eff84ff5d48998c492415
Next block
000000a1a31c16c07cbe57bb9c4d3bfaffab13130817c65fdabf8420c83680e4

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 19091 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
c4dadbf4b963cf2dfdaca20d2237a2e0… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
ed90cb55324f…9d874af24f1a coinbase1250