Block 21857
- Hash
0000002478b65397d2f1aa660b9fa8a2cedccfba97bdfc30750c2aaf2bc70421- Confirmations
- 19309
- Time
- 2026-10-13 08:14:41 UTC
- Median time
- 2026-10-13 08:06:08 UTC
- Transactions
- 1
- Size
- 2,772
- Weight
- 10,980
- Difficulty
- 0.0031405554
- Bits
1e013e69- Merkle root
d100dd70ac73d72f3258d2162198b5e403668975cb43c2ac6a56e893eb182228- Previous block
- 0000010c70842798dae8264e3583e1d95aab0a2dde6ba648cc8803fd57db562c
- Next block
- 000000fdcd9f033e81b17be82f7522cc292da3af80dcc044372f908eeba6b920
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 21857 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
c99b7ee7f2895ca706243e5a7044ca66…(2420 B)- Format version
0x01- Context string
SIGNET/PQBLOCK/EXP0- Block key the nodes require
- SHA-256
eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad
Transactions
| txid | Inputs | Outputs | Amount | Fee |
|---|---|---|---|---|
| d100dd70ac73…e893eb182228 coinbase | 1 | 2 | 50 |