Block 3991
- Hash
0000019b6defd555f5e1152f98e922f4b0d30ba92442eeb5a3e98d42f9e0f647- Confirmations
- 38284
- Time
- 2026-09-19 10:16:49 UTC
- Median time
- 2026-09-19 10:09:11 UTC
- Transactions
- 1
- Size
- 342
- Weight
- 1,260
- Difficulty
- 0.0011265153
- Bits
1e0377ae- Merkle root
8fb96c9dba3d0d8fb25ca5232c3c0b5866426ac36f5eaea8ebab7ca6e7cc58f5- Previous block
- 0000010eca18e8dbce2e4f391fe0a295368c1945d0685fd8de6485aae71071ff
- Next block
- 0000020b232fe10c91b793a69412b690cff166dd1beea92872e8221fd7646d04
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 3991 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 |
|---|---|---|---|---|
| 8fb96c9dba3d…7ca6e7cc58f5 coinbase | 1 | 2 | 50 |