Block 19990
- Hash
000000c5d0e0320f9f46f6fa9a1aec8639d0731ff42d06d5f7bdad585fe8c9f1- Confirmations
- 20902
- Time
- 2026-10-11 04:23:42 UTC
- Median time
- 2026-10-11 04:14:55 UTC
- Transactions
- 1
- Size
- 2,772
- Weight
- 10,980
- Difficulty
- 0.0035089589
- Bits
1e011cfb- Merkle root
c9f1b9939c3ab1322f4c66d5ae4c056896d738361c08aa2af1770d0b0533738d- Previous block
- 0000004c5659dcce6e0e8732be285514b0e29e8adca8ace4ae750559ec80ec78
- Next block
- 0000009042180acf27690c0cdbfd97e5297e2829265abf35ea56b3872b4204a8
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 19990 is below the activation height 20000: nodes do not require this signature, and only log the result of checking it when run with -debug=validation. The block producer adds it from height 18000 on, so that nodes can check it before it is required.
- Status
- In the form M2 requires, followed by the signet solution push (the classical signature)
- Signature
c7f2c326d03018cae441759cf0a20daf…(2420 B)- Format version
0x01- Context string
SIGNET/PQBLOCK/EXP0- Block key the nodes require
- SHA-256
eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad
Transactions
| txid | Inputs | Outputs | Amount | Fee |
|---|---|---|---|---|
| c9f1b9939c3a…0d0b0533738d coinbase | 1 | 2 | 50 |