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

Block 21945

Hash
000000a35f6dabf63e796538f610485108304d8da6045b7ba82c6a14050474b2
Confirmations
18774
Time
2026-10-13 10:43:28 UTC
Median time
2026-10-13 10:34:57 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
c48de655fc81dd4ef63aee9ddb7573e895be4703fff98fed70422ab9f6e3eccd
Previous block
00000089623a716d0f5d2169059e92154ee8a323195d62e6e3423044f1e86733
Next block
000000ab12609297364bdebb8b8b4f4083416fd79893a5ebe5c9dd7dff5cdb5f

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 21945 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
15357e50b9c1a1bcbead344e87b61201… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
c48de655fc81…2ab9f6e3eccd coinbase1250