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

Block 21199

Hash
000000a2360e31123d3460ba44881a3db7717c9e94a244eac9ead590670e7da2
Confirmations
20248
Time
2026-10-12 13:51:23 UTC
Median time
2026-10-12 13:43:27 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
674088cb49e01e7f85a30157e4c07a96ed766e7aa5349ece9844860ab6f287d1
Previous block
000000b82a65bd4b1239defe319f51e529e2ed40315c8c385e536f82a4baa809
Next block
0000013932042a086b19600ad5ddc50fc4116563f42e06258ec0b57be14c6a2f

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 21199 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
b37e49fe2dc497d39e0a34848dcd733f… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
674088cb49e0…860ab6f287d1 coinbase1250