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

Block 19148

Hash
000000f960964cb60cfe92d58a204bffa41b58f93c6c512067cf36e9596f93d7
Confirmations
22785
Time
2026-10-10 04:53:18 UTC
Median time
2026-10-10 04:44:42 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
063693c4fe1752814e819a707c2a2366a0efdc0dbeee4f417e7d86da05681ae1
Previous block
000000b2c8dacd3361a9af2e80bad285f7205f04e746592266b983c5404f9b82
Next block
000000357cf51dbf0f9a21bceff1173ff168c000ae029ba7a2b90f6b4cd30fc2

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 19148 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
a52951c81d89bd930748b48eb67e342c… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
063693c4fe17…86da05681ae1 coinbase1250