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

Block 21901

Hash
0000006abde9db1bfceeaeb74a0de7c29403685d6ccdaebf519165b11011f49e
Confirmations
20176
Time
2026-10-13 09:28:12 UTC
Median time
2026-10-13 09:19:48 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
385b9cd68bec29e1663e9b0b5ec3283ec852808af1ea13635fe3930d5f2e7cb9
Previous block
0000013af3af2c35f64a7140a39517f700250d22d3dbd1bb15d77d3f62a7474d
Next block
0000007e5e122ea9ced22b6d688e2d787cf8f0be184ea14e5cea9960b9318cd2

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 21901 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
c6ec8a710716226dc5cd3b45561877a4… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
385b9cd68bec…930d5f2e7cb9 coinbase1250