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

Block 21104

Hash
0000009eea004c3e628a9e0062d0dbb5945a41db86feb23c3be48a6a7e1b2b42
Confirmations
20061
Time
2026-10-12 11:13:45 UTC
Median time
2026-10-12 11:05:56 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
cac2bc1b44c211c689b71a57ec5b4e0044a7603d974b98dc11db92d7704a94de
Previous block
00000072e94b1cefab9da1666709717f91db405ba260a7ed9119b356aaafe21b
Next block
000000fe45de1dcc13b07c6ba3d620c38ecdfa21a1f0cb817ffebd5a2f44bae8

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 21104 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
851a607c82fdb8e3f8aee64dbf1c41f4… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
cac2bc1b44c2…92d7704a94de coinbase1250