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

Block 21315

Hash
000000bd7390a8f17de1f743be6b097fce770b525cfc356124238aa800d83723
Confirmations
20035
Time
2026-10-12 17:08:58 UTC
Median time
2026-10-12 17:00:52 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
21e31db2bf63a6705fafc551f1506c63b654789cea53e70a5b061b53ddf35493
Previous block
0000008cfd04abc7e98b06665334529f0c71e985a2c99f598507a509b9430503
Next block
0000012fe0f3e133dd48161880f8fc18250c1c0482c03a0862a52ad3ce9a86c0

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 21315 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
ddf313a56a27eedfb1b0fc9d5563c810… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
21e31db2bf63…1b53ddf35493 coinbase1250