Block 21668
- Hash
0000009c34c1c06f305c50c8f034f57f6fad049d633e1618e822cddcc92605bd- Confirmations
- 20295
- Time
- 2026-10-13 03:01:53 UTC
- Median time
- 2026-10-13 02:53:17 UTC
- Transactions
- 1
- Size
- 2,772
- Weight
- 10,980
- Difficulty
- 0.0031405554
- Bits
1e013e69- Merkle root
dd7aece8ecce39b90c5f406a8139213e84397f683e87248d7a9e7f8a7ae27ce8- Previous block
- 00000062b4627db1ac7fe76f393264be4d494fda02118d75553be44c23d15c90
- Next block
- 000001395de4ce8efbaf3859e6b5c8238938a687545b2078c4f8350a27969a5e
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 21668 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
1db4b0df1b74a719ab54f6fdbbbd02a2…(2420 B)- Format version
0x01- Context string
SIGNET/PQBLOCK/EXP0- Block key the nodes require
- SHA-256
eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad
Transactions
| txid | Inputs | Outputs | Amount | Fee |
|---|---|---|---|---|
| dd7aece8ecce…7f8a7ae27ce8 coinbase | 1 | 2 | 50 |