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

Block 19186

Hash
000000969e3adb85e63a477b84c7174b0c40553e5d68f6ae32ad334e4faab03a
Confirmations
22799
Time
2026-10-10 05:56:30 UTC
Median time
2026-10-10 05:47:52 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
6ba394c7e6c54c44d30728739cac312e0671d26e2851774db72391d1a4804f54
Previous block
0000007c1b56f5a5f5e9ed5aa2dc14ad8a0e913d3f521f6f2b9aebd0b36c3497
Next block
000000471b3127bfaff67c486d68db751c99f2ecc28c4e679db88d2f65535cf6

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 19186 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
ca37a4e7b0f99de2cc97c15313fb08fd… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
6ba394c7e6c5…91d1a4804f54 coinbase1250