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

Block 18547

Hash
000000049748bc7db739162308e2a2bc4bc01d132a5f025c7f44ab434b68bbc2
Confirmations
22319
Time
2026-10-09 12:07:15 UTC
Median time
2026-10-09 11:58:17 UTC
Transactions
1
Size
2,772
Weight
10,980
Difficulty
0.0035089589
Bits
1e011cfb
Merkle root
05f7d8d19bdfaac6c7a69555c8ec66b23d07ba8a352fce86ac75eeebd31613bb
Previous block
0000002dbf1ad975d1221bc0b41b91da8d3347504b9239f1e12b89bf7fbfe5d9
Next block
000000ef39015b91747dc8eef7683e287e4fe6315a8381afd35938dd256c7207

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 18547 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
1ec6a03306d5fa8d86cb7cfca45bcff8… (2420 B)
Format version
0x01
Context string
SIGNET/PQBLOCK/EXP0
Block key the nodes require
SHA-256 eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad

Transactions

txidInputsOutputsAmountFee
05f7d8d19bdf…eeebd31613bb coinbase1250