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

Block 21607

Hash
0000013a5ea0f29378f6fe87ddb9fea89d76f3b8ce8fc09dd998748b97a4e2e6
Confirmations
19421
Time
2026-10-13 01:17:49 UTC
Median time
2026-10-13 01:09:42 UTC
Transactions
2
Size
2,977
Weight
11,596
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
f3190fe2474de98c9d563cfff1e626d94bf1382a7359f6dd9739cdc04ce3d23d
Previous block
000000944888c0d0c7870be77fd25cbd6136e878031c62d7423cf759c7b75ee9
Next block
000000b5df4cffd6ddf64d8bd0efba7351cf507af739584d3cef3289c64de5e7

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 21607 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
9152b52b87b457a3f65aa8b551021542… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
47290757c3ab…208e854ed63f coinbase1250.0000031
44facadd2146…9772457380c9 pays to P2MR1240.99996880.0000031