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

Block 18968

Hash
000000dbe261a249d13394b110a10ccffd78e8dcfc82d030ece520bcca90bdb7
Confirmations
22616
Time
2026-10-09 23:44:42 UTC
Median time
2026-10-09 23:36:40 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
aea699eaab9834296c048484936747794022ce22893b492184277fcae79c6659
Previous block
0000003d6d8e45534f9d7b4260dae7c77efa7551c44d26e5000e088f452ec4cf
Next block
00000006f240ff6ac390ac5289f0ab0f1995f42124fc3a0c64d3b93f8748aa25

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 18968 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
9e1e9a1734a95a89c69b0a3a25eb2682… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
aea699eaab98…7fcae79c6659 coinbase1250