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

Block 21884

Hash
0000001f376871969f9689d77dbb7e38c270f1928892150a6eab5d7c1981eed7
Confirmations
20497
Time
2026-10-13 08:59:30 UTC
Median time
2026-10-13 08:50:53 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
ba4c59f9e0d7b7c798675efa22011033817dc910f1e64764eaed6784dfc7f207
Previous block
000000ead0f8a80b7e99c63dcbc7d4576f1e2606677b09908494dd0bcb717ea5
Next block
000000a8814c0f4dc0372c4b5fe3769348d8e80c762f866008914a86051c74d0

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 21884 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
5a383ac822a24190577134b3d0eb0e63… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
ba4c59f9e0d7…6784dfc7f207 coinbase1250