Block 640
- Hash
0000014b3763d833fb93366b8cdbc165aea571b776891764be7e50839365888c- Confirmations
- 40899
- Time
- 2026-09-15 18:47:54 UTC
- Median time
- 2026-09-15 18:40:23 UTC
- Transactions
- 1
- Size
- 342
- Weight
- 1,260
- Difficulty
- 0.0011265153
- Bits
1e0377ae- Merkle root
2dec6ec4af2d3aa99f39941c4d1dcd5645b273ec4ce005ef90dc33ee2b7372cc- Previous block
- 00000313649d8530d7684ee5a969f835654a079defe43bbbd20694c9c5fb03eb
- Next block
- 000002cc6b95e55874d542d762c1b25f00e9fae3e4a0b4d654e71dbf3f51db22
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 640 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 |
|---|---|---|---|---|
| 2dec6ec4af2d…33ee2b7372cc coinbase | 1 | 2 | 50 |