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

Block 21955

Hash
00000110c5ab4c818a3e4f34d33528008824d2d541696605540a2ff63ada14c4
Confirmations
19583
Time
2026-10-13 11:00:16 UTC
Median time
2026-10-13 10:51:48 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
df0b65454b2c744211aba3602bed7c10c9c8f430a07e94ccf1b4e2cb5945cace
Previous block
00000013b7507dec81a7399b31cc7a97dd48b6b19bb4eda98dff804f6a6febb8
Next block
0000003ec8b545a2ae65ceaab7e82b53ea8eca0c2838e059f5f28861d36000e3

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 21955 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
b71d84f120248db494cb91b2e0384ed3… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
df0b65454b2c…e2cb5945cace coinbase1250