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

Block 21803

Hash
0000002d7417355c4d0e067f172cf7dd71759bddae02cdd9dc82ddfbde28701f
Confirmations
20315
Time
2026-10-13 06:46:22 UTC
Median time
2026-10-13 06:38:05 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
2e3d142dec84c5715f5d20c5b4415d6fd43ec7b28451bad6b310e55958e13815
Previous block
000000e8d63af298050c5ff1e54eb426b8d90e411d9aabea316ce52b1a3d3f1a
Next block
00000123b8421550fdf3866f06dc080bd827260a0c96fe381ef9d69b86d64c40

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 21803 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
de00c620ffd8f40a7527d0664aa2dc1b… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
2e3d142dec84…e55958e13815 coinbase1250