Block 21891
- Hash
00000042ef3c306786261b3ef6b46ae031c728f0f8565772bd0ad987741664a5- Confirmations
- 20267
- Time
- 2026-10-13 09:11:07 UTC
- Median time
- 2026-10-13 09:02:54 UTC
- Transactions
- 1
- Size
- 2,772
- Weight
- 10,980
- Difficulty
- 0.0031405554
- Bits
1e013e69- Merkle root
f3f530ce45481f6ea7aae84a91bb305cdfd8e0aab7c677ea7bafb478e35e6fc9- Previous block
- 00000062073bdb3bf4689961512118ee11f2473189c014f4609c8ac8316fa5de
- Next block
- 0000008dbdbbefe90048a1be00cc963ed16e87f7e2e76de57640507d9e949b12
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 21891 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
37029e1ec39e381ef0bd183493d436fe…(2420 B)- Format version
0x01- Context string
SIGNET/PQBLOCK/EXP0- Block key the nodes require
- SHA-256
eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad
Transactions
| txid | Inputs | Outputs | Amount | Fee |
|---|---|---|---|---|
| f3f530ce4548…b478e35e6fc9 coinbase | 1 | 2 | 50 |