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

Block 19947

Hash
00000090b9d6aa9d41c38cec591b7803d937a3e787ba07ac4ed927896c45089f
Confirmations
21833
Time
2026-10-11 03:09:28 UTC
Median time
2026-10-11 03:01:24 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
16a9b05a296d8f959aea6c089a4ccfff5d329b21a9b404d53a63462701c55a6d
Previous block
000000e30f950a70b2a7aacec06f8a6d8f607d2d15bff51e35143d8961c85c8f
Next block
000000022744a999d2bfc3ea1c035dd2e5d64178db181e11a58dc99bcc9ca8b4

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 19947 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
ecc2b93177c51398f3769ff62737f896… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
16a9b05a296d…462701c55a6d coinbase1250