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

Block 21089

Hash
0000008d49fcc9b1d4e299c2caab05b25ecb0386e4afab79a70c2e069a0a50e0
Confirmations
19647
Time
2026-10-12 10:49:42 UTC
Median time
2026-10-12 10:41:06 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
c53ff07d083b997b7ab6b6f6ea0e7f6066fffe6f702f3b85d27c8224817b7686
Previous block
00000073da0dd6a0a86ccbf84b83354d8615456f7952745b834156d1ca78b0aa
Next block
0000004248b2a9d5d149d71181096337bc3c7db7bc0a275672b9f32cfb44609d

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 21089 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
68bf06aceacd72eb4c3c8c5894ba5a51… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
c53ff07d083b…8224817b7686 coinbase1250