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

Block 21963

Hash
00000021b1e856b4f719fd72603c1900cd12e106f026b5a86a4e6d266f6b909c
Confirmations
19685
Time
2026-10-13 11:13:25 UTC
Median time
2026-10-13 11:05:06 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
fefcdd26dcb31416f0152b40744e94c426afe8f3359ed790a45706cc932fb7e0
Previous block
000001245db024468c976d25c3261509f1157a53e5571643d1f0e6465cdbd330
Next block
00000074be3905953a5cc0d3e9e4f88384d8b0a796486234eb3f44b47bab98e4

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 21963 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
7bd4ce6056a4909437347f2752b6a4ce… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
fefcdd26dcb3…06cc932fb7e0 coinbase1250