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

Block 20643

Hash
0000008a8213b0054631f311ea9fb2a31189f65dfc93bae99e1bedff573a5c54
Confirmations
20456
Time
2026-10-11 22:29:04 UTC
Median time
2026-10-11 22:20:50 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
6bec7d18a9d83382a70133766947d6f637f19def014ac1f05cd2e6c227c95eab
Previous block
000000c72231aaf0305d5f7301eb6bc7f5c032dbcdd88f7efcf2e2f7e429e38c
Next block
0000010891fa81857654cff48cb6aedb2ab76291e21ed5b63776899741c4fe14

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 20643 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
accef02ebe2d2316e25e3561f0c28ec2… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
6bec7d18a9d8…e6c227c95eab coinbase1250