Block 21663
- Hash
0000009b764593aeac7375e7b0668edca6b8488e2004c04f783f238fb452ad9a- Confirmations
- 20431
- Time
- 2026-10-13 02:53:17 UTC
- Median time
- 2026-10-13 02:44:19 UTC
- Transactions
- 1
- Size
- 2,772
- Weight
- 10,980
- Difficulty
- 0.0031405554
- Bits
1e013e69- Merkle root
ce661060ebb7569bec19ac7664020df23265765d8579a34042d4172176937324- Previous block
- 00000018e5124e85874480df10a5ab30fd683363c42b267b73c9ae1a3a82aabb
- Next block
- 0000003570dbf6317bbeafae4f6b302e6a81d8d7be5ac2504cc4120eddae22a1
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 21663 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
9232cdf9e592c9fa4ae4bb3697023715…(2420 B)- Format version
0x01- Context string
SIGNET/PQBLOCK/EXP0- Block key the nodes require
- SHA-256
eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad
Transactions
| txid | Inputs | Outputs | Amount | Fee |
|---|---|---|---|---|
| ce661060ebb7…172176937324 coinbase | 1 | 2 | 50 |