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

Block 18251

Hash
000000823cb3996c8a6b9d79d40b044427a34af6b1cb1cdf2bcfd519fbfaaa02
Confirmations
22344
Time
2026-10-09 03:52:03 UTC
Median time
2026-10-09 03:43:29 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
0ebf234bb7b2967be9ded0db5554143a5064a6e0a179719b2d789c56ae33e4d2
Previous block
000000756531e63924567964c0c5dd825d6744cb10dad35a78df5a90a92e5344
Next block
000000f977e4d5829610177ce592728be88ee8f04bdcc9fe2e9a38bcf918a80c

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 18251 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
8b4c35d21be7447d5acbaa61b855f63c… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
0ebf234bb7b2…9c56ae33e4d2 coinbase1250