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

Block 19744

Hash
000000f67edca3e10d2aab5487ad0ca3044724011dab90963c9cb9f151822b1b
Confirmations
21842
Time
2026-10-10 21:35:14 UTC
Median time
2026-10-10 21:27:11 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
27af8b6184d68e3dfe0b390e77d40e5b51602b09ca3e4cb6888ea0a8f0ab6a6b
Previous block
000000d8d6650a65c9585418471243c8a6a8857804d69fcf685055c3ca61b1b9
Next block
000000e8577dbffa992b3e8bb2b6b5f37202f577cf3ee65ab416259ebbb87f62

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 19744 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
3beb43f543175be8bec79ccf405aa2c6… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
27af8b6184d6…a0a8f0ab6a6b coinbase1250