Block 21721
- Hash
00000017692f32bcb2765e199ef7aa6ed4a598948c116a727ef81ce5896191fa- Confirmations
- 19721
- Time
- 2026-10-13 04:29:14 UTC
- Median time
- 2026-10-13 04:21:14 UTC
- Transactions
- 1
- Size
- 2,772
- Weight
- 10,980
- Difficulty
- 0.0031405554
- Bits
1e013e69- Merkle root
0a64a48820936b073cb2a09c61a976ddbf0e97fb160d9190050711eb7f5dcb52- Previous block
- 0000004ea4cd92a8f0eca4d5157cab599e556c1e3a41b6f9701b2892d4e9c510
- Next block
- 0000011cae26e93ef1cb3ab40dd807c5a32238009082c6bfcac86ea0adba125e
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 21721 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
f2fdc9c872f6857c9aa6c9cc2b6b1fd2…(2420 B)- Format version
0x01- Context string
SIGNET/PQBLOCK/EXP0- Block key the nodes require
- SHA-256
eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad
Transactions
| txid | Inputs | Outputs | Amount | Fee |
|---|---|---|---|---|
| 0a64a4882093…11eb7f5dcb52 coinbase | 1 | 2 | 50 |