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

Block 18021

Hash
0000002a3f3a0ed725f24e59e72d8e3774f2ecd1cf7e137f489e4bbdbf5b2f4a
Confirmations
24056
Time
2026-10-08 21:23:35 UTC
Median time
2026-10-08 21:15:23 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0040172004
Bits
1e00f8ed
Merkle root
84b3ff0ac4a918b26d94652d1b6efe6736a6c989e1ffa87d348d8af395807497
Previous block
000000e022d86a333c7c1a67dc7df77cd0bf9ef7a9a499cda09ea4948d37f46b
Next block
000000adb07e2597581bddb3e79842420585930002d1d9486f50c97bbe87f403

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 18021 is below the activation height 20000: nodes do not require this signature, and only log the result of checking it when run with -debug=validation. The block producer adds it from height 18000 on, so that nodes can check it before it is required.

Status
In the form M2 requires, followed by the signet solution push (the classical signature)
Signature
267595c82f9440f331a7ce2fdafa622d… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
84b3ff0ac4a9…8af395807497 coinbase1250