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

Block 21015

Hash
000000f93bc213772443af81b0279e0f1c1b1b07e936e1398d688ad8f888bbef
Confirmations
19837
Time
2026-10-12 08:46:24 UTC
Median time
2026-10-12 08:37:55 UTC
Transactions
2
Size
2,977
Weight
11,596
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
6b15343ea020c84b85f5c28338ef8c086a50df5734c312b125148013e62014ed
Previous block
0000011ffb13d5ddd9cb5b32050274914d2f59874cc6894aa831fb64a7025b15
Next block
00000107a05d8ea08d550dc31f43eebb74f362572e2c2f6823e92b0756316d64

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 21015 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
78874a172bf8338e92b54265de26ed63… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
f12076138c52…9ea714c22765 coinbase1250.0000031
6876d4f852d2…72c6bab63f1e pays to P2MR1229.99993470.0000031