Block 21687
- Hash
000000e8d4dd2f91c310a2b107ecdfab731d3667c195f3e5a3500fbc039211e8- Confirmations
- 18921
- Time
- 2026-10-13 03:32:46 UTC
- Median time
- 2026-10-13 03:24:50 UTC
- Transactions
- 1
- Size
- 2,772
- Weight
- 10,980
- Difficulty
- 0.0031405554
- Bits
1e013e69- Merkle root
b3c279b87e59ee6feb2f7726f88489521655665beafc10a32b6788bb26b9ea09- Previous block
- 0000001583e39b3627b321e977d494839b4b46902f89cf5b942b3ec58a3e3b92
- Next block
- 000000b4c6afbb81e4baf2ca3a019ae6c55ac527706094b42db2e3cd48ad2434
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 21687 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
33ba0c813ff112f4ab7d3a54c3cd40da…(2420 B)- Format version
0x01- Context string
SIGNET/PQBLOCK/EXP0- Block key the nodes require
- SHA-256
eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad
Transactions
| txid | Inputs | Outputs | Amount | Fee |
|---|---|---|---|---|
| b3c279b87e59…88bb26b9ea09 coinbase | 1 | 2 | 50 |