Block 21991
- Hash
00000082f648ddde6d24db5727afe04b5ed0aa253f3c6de0826e815ff5e0b904- Confirmations
- 18991
- Time
- 2026-10-13 11:59:49 UTC
- Median time
- 2026-10-13 11:51:34 UTC
- Transactions
- 1
- Size
- 2,772
- Weight
- 10,980
- Difficulty
- 0.0031405554
- Bits
1e013e69- Merkle root
db7e0c736d933387a8322ba6fdf41152c55133bc3551cf4ea182b453527d5e14- Previous block
- 0000001e6b54cfbe9166eca1533ce0be149b41bb6d15c6f3fb84a7773cea9167
- Next block
- 00000119f77ec8ae2a661b7bded3433246aa56a676cbdce0ec41887e38ddc7c4
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 21991 is at or above the activation height 20000: nodes that enforce M2 accept a block there only with a valid ML-DSA-44 block signature.
The node behind this site enforces M2 and holds this block, so its block signature passed the node's check.
- Status
- In the form M2 requires, followed by the signet solution push (the classical signature)
- Signature
412845b6dfcfbfd30a10948e9c5ea263…(2420 B)- Format version
0x01- Context string
SIGNET/PQBLOCK/EXP0- Block key the nodes require
- SHA-256
eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad
Transactions
| txid | Inputs | Outputs | Amount | Fee |
|---|---|---|---|---|
| db7e0c736d93…b453527d5e14 coinbase | 1 | 2 | 50 |