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

Block 28639

Hash
000000015e37514e78626e8180f806ec5b38b5ef151e133267689a90e2df50c7
Confirmations
12502
Time
2026-10-21 02:28:06 UTC
Median time
2026-10-21 02:20:02 UTC
Transactions
7
Size
4,416
Weight
15,090
Difficulty
0.0021387367
Bits
1e01d38f
Merkle root
de8bf82d58316a9690745b8704599671a58cc84bc8a6483234259f15a03cb00e
Previous block
0000005619b06d3982e742a21fd3fed4a77c5f0caba92f6af17656ccf66e0682
Next block
0000012d18c145c9310b590fd904788b51074d51dd57ed58fb67b101b18727dd

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 28639 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
f108b62efd3ba4f343a5117b9fc22e98… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
5cf16d70508c…89e92696f6a1 coinbase1250.00002064
e9453269d07e…604f88d8212e spends P2MR pays to P2MR120.999996560.00000344
5fb3569b9965…4aa76f093c5c spends P2MR pays to P2MR120.999996560.00000344
7fb362b3f59d…43c6c3b6517a spends P2MR pays to P2MR120.999996560.00000344
fa54f0033164…f71ba74185b7 spends P2MR pays to P2MR120.999996560.00000344
f8f0fe0c89a9…3750a7dce9be spends P2MR pays to P2MR120.999996560.00000344
3a0cf5020560…266313e19be8 spends P2MR pays to P2MR120.999996560.00000344