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

Block 19356

Hash
00000042b83c3af371c872bfdb686dad8ba6ef14b1eb723ada9d3dd9d227f303
Confirmations
22241
Time
2026-10-10 10:42:51 UTC
Median time
2026-10-10 10:33:55 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
305bb4855aee35c49355706bf5743e1502f09379ca97aeec3f3d2137090ae06f
Previous block
00000079f5cbcec97dfe8ca87aa4c798d60bc25cd8650cf003c744e7552fa558
Next block
0000006d90f50e486bc9d2485e98bac7f8ae54a3f33738929751d23beb113a21

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 19356 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
c617887a9ad80c854a3a59bd913fcfa4… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
305bb4855aee…2137090ae06f coinbase1250