Block 21649
- Hash
000000a2cc2ab1d5b71bdc27e97066438320fa5825dc30e079f6e3dcf59b58ec- Confirmations
- 20503
- Time
- 2026-10-13 02:28:59 UTC
- Median time
- 2026-10-13 02:20:57 UTC
- Transactions
- 1
- Size
- 2,772
- Weight
- 10,980
- Difficulty
- 0.0031405554
- Bits
1e013e69- Merkle root
f8d81d5b4623bdaf517f60cb829282dfb6aa85de45551552eb50649dcc814207- Previous block
- 00000073f749e1de86d637c390bf7436a8495620baf42383d2a7e5524898720c
- Next block
- 000001146b2b3b81ec9ca403ac5c3714d445d42304f0d445110765fdbc7736f7
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 21649 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
a556c503b91ef34acb925bb4d28766fd…(2420 B)- Format version
0x01- Context string
SIGNET/PQBLOCK/EXP0- Block key the nodes require
- SHA-256
eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad
Transactions
| txid | Inputs | Outputs | Amount | Fee |
|---|---|---|---|---|
| f8d81d5b4623…649dcc814207 coinbase | 1 | 2 | 50 |