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

Block 21740

Hash
000000d8e33c2d54ce91434b4cb73eed4b740ea256de641cfc5384c2c19704db
Confirmations
19920
Time
2026-10-13 05:00:41 UTC
Median time
2026-10-13 04:52:45 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
87fa98ee59a25955a40aa7755c79e69e093b97bfb0dc88d9ebaaecd64b0c3609
Previous block
0000006949cfe61b3b41def87e9cdaad68a36609c25a015e312dcb216a82c210
Next block
0000007f59a9f8e7ab4d299fa05eb4be68add26a73ccdbc7d24c7b4fe84576a2

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 21740 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
f487ccad4f215fa272d38e631632917f… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
87fa98ee59a2…ecd64b0c3609 coinbase1250