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

Block 19901

Hash
000000211d674728e16ee61ea16d62d3a1ed7fb2a42e4fdd1abe7e4c7723efa1
Confirmations
22253
Time
2026-10-11 01:53:17 UTC
Median time
2026-10-11 01:45:07 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
4f00a94515847561fbfcaaee280c67c82ab518b4e04f8fa9882c7d626c39255e
Previous block
0000008a681c8e4eae7e30897b1ad21f3365c85c6b92d2e3141c0e9c40fbb244
Next block
000000616fb7586cac9b778e6703342d1a6a02ecd899c88a6bf776d3fbcd840d

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 19901 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
43a95955977ebe6626e9812da910a7a1… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
4f00a9451584…7d626c39255e coinbase1250