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

Block 21842

Hash
000000861e9cddfc46d8e0e1c40a77710229012f5198d380ca82e32ac5fb19b9
Confirmations
18734
Time
2026-10-13 07:49:49 UTC
Median time
2026-10-13 07:41:52 UTC
Transactions
2
Size
2,977
Weight
11,596
Difficulty
0.0031405554
Bits
1e013e69
Merkle root
35c60fe75a9f159af0030c22d70a512a0bd7ed3718e8b59093ab9946c3982040
Previous block
000000b4fecca20b2de0d434bcd0e9a943c8497ac66b98268fa1a1e7496d5429
Next block
0000005561bdacf2c2ed0126d9e1eee7ebe26008d1552b4a23c936d95d52c4aa

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 21842 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
e5037c90ba0f75273a6595d6479d5843… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
93ac265dc6dd…ed8b7fe900cc coinbase1250.0000031
538e64103bd7…a4e57c0a0856 pays to P2MR1222.9999130.0000031