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

Block 21220

Hash
000000a94dc8a6e7fdaff1e057218aef032326bccbeb14227d7cfe3400a33cf9
Confirmations
19878
Time
2026-10-12 14:26:25 UTC
Median time
2026-10-12 14:18:04 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
4623a14cc7094573c667b9ab68e5d83f42d8eba74a090888454fff6ae82ff414
Previous block
000000807b80e3c7481e4c3d7ab5386a1f37a60e7045fb7a549caebb7da85e64
Next block
000000e39ba6bb34223be5219670e1fdf013b98f79b41a88e328e7eafb5d12ca

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 21220 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
9fd277e78d44af84c0b155079b0db33b… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
4623a14cc709…ff6ae82ff414 coinbase1250