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

Block 19984

Hash
00000111c94f3ffff50e60b0b96a8e9d9c1fe4dbe73260848a70d86433049d27
Confirmations
20745
Time
2026-10-11 04:13:23 UTC
Median time
2026-10-11 04:05:20 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
ebf32696845ea2da4dc11ecd7d630c13759d248a567f78cd84800a0a552b9c3a
Previous block
0000005461bfa31be831ebc04418425d68d6ac8c97ac1cb5789bfb986ee2f455
Next block
000000784646ac7609839df007d4216defa7e07b2a5da875a8f2d463b8990ad7

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 19984 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
11d608ec5b5f57e38cdd5e5c634f75c5… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
ebf32696845e…0a0a552b9c3a coinbase1250