Block 643
- Hash
0000016c19e565191c230b1cc75985476ffdf6f8058c8c44cd5f80197aabd662- Confirmations
- 41117
- Time
- 2026-09-15 18:52:25 UTC
- Median time
- 2026-09-15 18:44:54 UTC
- Transactions
- 1
- Size
- 342
- Weight
- 1,260
- Difficulty
- 0.0011265153
- Bits
1e0377ae- Merkle root
b4561528c23dde8820957e75f09a8a67ad68f6bb861804dfbc9808740efbcd54- Previous block
- 000002091e4f47f9aab9abb32d3dc32dc48924b21b8fcfdec02bf5c5f56cbdbb
- Next block
- 0000008e4f97d947a6c989d1c776b6ae324e778f54decc2ece3d1f2b700201cd
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 643 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
- No ML-DSA-44 block signature in this block
Transactions
| txid | Inputs | Outputs | Amount | Fee |
|---|---|---|---|---|
| b4561528c23d…08740efbcd54 coinbase | 1 | 2 | 50 |