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

Block 19328

Hash
00000037afc14dbbe841564999794c249b8745af430c004f4a254464cbae8f61
Confirmations
21855
Time
2026-10-10 09:54:45 UTC
Median time
2026-10-10 09:46:43 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
45fc08b1f4d130955da27c8522aaa279ced006b28ddc45332f492eca9e7c5564
Previous block
000001000a815e6460fb479413ff182c4d971935efaad0db5f8dda9d0c0db949
Next block
000000b3f9798d14a36c0ee101ba7f172e6ab00fdceeca99d268c3d75d68ae94

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 19328 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
2c0604d9ed3643590d636837164ec5f2… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
45fc08b1f4d1…2eca9e7c5564 coinbase1250