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

Block 19743

Hash
000000d8d6650a65c9585418471243c8a6a8857804d69fcf685055c3ca61b1b9
Confirmations
21839
Time
2026-10-10 21:33:28 UTC
Median time
2026-10-10 21:25:24 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
23a60b5d0bd522c80277ee4f871453eb301452fb8bd297e1dd9bf12433d4c2e6
Previous block
00000006609bb53012bd6f556b74ada8950c77b459dba145d7c174754b726660
Next block
000000f67edca3e10d2aab5487ad0ca3044724011dab90963c9cb9f151822b1b

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 19743 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
f65ea89c7512cb898b246dc9e51493f2… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
23a60b5d0bd5…f12433d4c2e6 coinbase1250