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

Block 21843

Hash
0000005561bdacf2c2ed0126d9e1eee7ebe26008d1552b4a23c936d95d52c4aa
Confirmations
18905
Time
2026-10-13 07:51:41 UTC
Median time
2026-10-13 07:43:31 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
aa71e023af9919fd087da9f8ada253ccaec35f4329e4b8e115732d7a2ec51041
Previous block
000000861e9cddfc46d8e0e1c40a77710229012f5198d380ca82e32ac5fb19b9
Next block
00000013cf9a1f2debd21a2c3535c7fd1320b986a5a0960b7ff68545359be471

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 21843 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
fb5155667e62633c7b6c70807ae41b7d… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
aa71e023af99…2d7a2ec51041 coinbase1250