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

Block 21845

Hash
000000d8c64f601b47bdbce6542245b22f7d943e59492e3189e0b435f4631428
Confirmations
18888
Time
2026-10-13 07:55:06 UTC
Median time
2026-10-13 07:46:40 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
a924efffc1013836bbdd6879d4bead2b598014c759c9a77c63e2f3486e1d2e8b
Previous block
00000013cf9a1f2debd21a2c3535c7fd1320b986a5a0960b7ff68545359be471
Next block
000000d46fa2ad83b498215fcf9c74480250f43dd489b16e3feac8c21ae6c78b

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 21845 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
0c05ec18123d388c1f4787f624b62589… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
a924efffc101…f3486e1d2e8b coinbase1250