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

Block 21471

Hash
0000005d49109b0a8faed3a054afab5ef7e4f64035d1fdd9617732a991289f64
Confirmations
19936
Time
2026-10-12 21:30:13 UTC
Median time
2026-10-12 21:21:46 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
f34984d836769fd0802d6f89222695900203c8e62b6bd5c747690de0fc33e669
Previous block
00000037ea0cefe07ab695ef5b6dfa8721438cece8a3e6957e370e4359f91fe8
Next block
00000056cff9cf2a56f8f1bbf0d7f3fb9b6d0e23ce4e793285e2c7dc13d9f7a9

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 21471 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
7ad99e1c6b6f9c63e520e17c44295eaa… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
f34984d83676…0de0fc33e669 coinbase1250