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

Block 21853

Hash
00000097a3e30c2839526c3f3a56e6539109a10b3539392dec2815374c099d80
Confirmations
18940
Time
2026-10-13 08:08:00 UTC
Median time
2026-10-13 07:59:51 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
0f0ba64bbed17d88858d51f9e6b3c0b8b8bc5327de5d5515abbf06c0d1fc74b9
Previous block
00000092e79c3e3caafb3ece14ba05d5ea811c1b66b86481db45c3be5a19f541
Next block
00000086574bf5f011809065fcf44f454e0c5d0fc013d3b1d985765ea14d213a

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 21853 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
a653cca31c50164e07f094e051adef72… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
0f0ba64bbed1…06c0d1fc74b9 coinbase1250