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

Block 18234

Hash
000000236a92bd02e0e017307c91aa339613d6531a728e1d9fdd3e37bc9b729c
Confirmations
23746
Time
2026-10-09 03:22:05 UTC
Median time
2026-10-09 03:13:37 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
8e17a886465dccd2a1903d0a3721248ba1f36d7c59e3e27a437f0d0e9a947ca7
Previous block
00000010ae42651857ec2809ff4d2a44b6e7802d158a05e28c7701a26974b7f1
Next block
000000672479f75037e691eb08d2d3ebeaf1a0f2cfc75983c72ca0647912b8f1

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 18234 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
625ccb2ac3492d9d1ca05c1aa283b9c3… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
8e17a886465d…0d0e9a947ca7 coinbase1250