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

Block 19422

Hash
000000d0752869459511a14293a0e1a7dc2c3a8de675f91ae9b910ae3f56828e
Confirmations
21859
Time
2026-10-10 12:33:06 UTC
Median time
2026-10-10 12:25:01 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
5d448f0f6a983537c53698e8dea2441c6056973841573374ebaffff6678f6e3b
Previous block
0000004ac1961ac9096e3726db63ba61bc7d87300eb59f2931a451695108adb3
Next block
00000026065919d3eb879174824d1ac2e4f7b704f37e762584d1705f668d8f15

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 19422 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
a907f63ce229a1cec07c2f4eb68d7d5c… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
5d448f0f6a98…fff6678f6e3b coinbase1250