Block 21643
- Hash
0000001d15777aa6e8a365174f8788e76ff58e126244ee1e62001eacac7a4ab0- Confirmations
- 20686
- Time
- 2026-10-13 02:19:25 UTC
- Median time
- 2026-10-13 02:10:43 UTC
- Transactions
- 1
- Size
- 2,772
- Weight
- 10,980
- Difficulty
- 0.0031405554
- Bits
1e013e69- Merkle root
05fe73ca0686ac20e899bff7ad121b07ef44253d0e9ae384f0c7c22fb42d86c0- Previous block
- 00000121aab0d6c4dd73c2146f0f5ed868dbc7997a9ca83b6792f04c6c005187
- Next block
- 000000c8360e8d16c4c8570d9ad92e60910900d69d0ab3d55940818f006caabd
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 21643 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
bae6d8624e073dbe58fb871ddaa5c51c…(2420 B)- Format version
0x01- Context string
SIGNET/PQBLOCK/EXP0- Block key the nodes require
- SHA-256
eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad
Transactions
| txid | Inputs | Outputs | Amount | Fee |
|---|---|---|---|---|
| 05fe73ca0686…c22fb42d86c0 coinbase | 1 | 2 | 50 |