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

Block 21911

Hash
0000012778da8b5108fe1c55f1928f8e39521bb3efddb509bc8e63fe47a4c473
Confirmations
19769
Time
2026-10-13 09:45:59 UTC
Median time
2026-10-13 09:36:51 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
e04b643bd0e8dd6afb881b03254713450112bfcea8ee4e69d6da2b0a3a45d15e
Previous block
00000047aecb321d59f2e1f4bb9098ba4684ac4f6acb3f5937bf52e3e0adfe05
Next block
000000517d45d0625f227ffc5641045461861bcf570a173c183b0529e2e94776

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 21911 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
4ba06049f3a84723398c22d096404b03… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
e04b643bd0e8…2b0a3a45d15e coinbase1250