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

Block 19985

Hash
000000784646ac7609839df007d4216defa7e07b2a5da875a8f2d463b8990ad7
Confirmations
20912
Time
2026-10-11 04:14:55 UTC
Median time
2026-10-11 04:07:04 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
2cee4f71554cd733c3f75faf6f76abc0771f4148daf7b9a2d808ebb301d0c213
Previous block
00000111c94f3ffff50e60b0b96a8e9d9c1fe4dbe73260848a70d86433049d27
Next block
00000083e2fbb2ea19afb8b9d34aa1d3c71f41e9f0e7e1772852b3f0e09f4dad

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 19985 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
a8f50ffb9d09b4940379dadf7f60e041… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
2cee4f71554c…ebb301d0c213 coinbase1250