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

Block 19339

Hash
00000056ccbc35eac6f81f2f9df61f90560fa02188908f31f62d9f83fe0e2a3d
Confirmations
21211
Time
2026-10-10 10:12:51 UTC
Median time
2026-10-10 10:04:50 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
c47aa2c6dbb8070591dfc7285e25470e60a97c24c93d20076fe7326e3edf716d
Previous block
0000009dd4857a93a2231ba1288605c94e3336d551b2647a81bbf6509ed5c601
Next block
0000007c50d32b5df1614eee93d2f21188414a91c7a5e17ba1120bc426419c2d

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 19339 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
dc4fb3d514a2c9f02149c4856a1b5632… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
c47aa2c6dbb8…326e3edf716d coinbase1250