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

Block 21535

Hash
0000011679c6eba3dc1c9ebe1013ab28a0094b9b34a99cae4da88fd0ae10664b
Confirmations
19514
Time
2026-10-12 23:16:14 UTC
Median time
2026-10-12 23:07:49 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
2b8c9ece9dacf85006903a30c048ccfbb33aa57ed833adebdf0b0d01a49126ab
Previous block
0000009ed9f6ada57714afce0bfb2fd7259aa962080aa2a8cc86c0b9915457a6
Next block
00000048349961fbc4d5e9e0c464fec42a6bb406527990ef409d8baae0d6e95c

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 21535 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
866622d9e75bf2b2b243bfed8f6e84a0… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
2b8c9ece9dac…0d01a49126ab coinbase1250