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

Block 21265

Hash
000000a81a1b09cb0b222d1b4bd2d072921ff0666cccd8a591f3527cc99fbe16
Confirmations
19862
Time
2026-10-12 15:42:28 UTC
Median time
2026-10-12 15:33:57 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
3521b3ea8fb6117039c5c46dca66bad639dc1c6b97f1de769466f8fc34ea187b
Previous block
000000dc3f53ee644a338b6bb8d24bc89282f8e9c694b34a3b0e2b85304c88e7
Next block
000000ed04f452c59bbb973b6ec813516ed2d543e5441d3d2cf3241ec4f60de1

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 21265 is at or above the activation height 20000: nodes that enforce M2 accept a block there only with a valid ML-DSA-44 block signature.

The node behind this site enforces M2 and holds this block, so its block signature passed the node's check.

Status
In the form M2 requires, followed by the signet solution push (the classical signature)
Signature
0fa277f032f4d971f1463dcdac534ff7… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
3521b3ea8fb6…f8fc34ea187b coinbase1250