Block 21681
- Hash
0000004a4915465d9176e90c70222ee5f13a128486822fca82c6389488236f0a- Confirmations
- 19546
- Time
- 2026-10-13 03:23:08 UTC
- Median time
- 2026-10-13 03:14:55 UTC
- Transactions
- 1
- Size
- 2,772
- Weight
- 10,980
- Difficulty
- 0.0031405554
- Bits
1e013e69- Merkle root
5aaf1569e94e5d134960f7f23c484878b6bc2c7c6f2d85bc29fb6bb90951bd73- Previous block
- 000000554d2db042c7ae5fd1533c7faf2b54cd61cb44bb0e49d28e31e3cfcc23
- Next block
- 000000cbd13217b6170b2c1e56bd9146e81aa7521f1281758ccdc7b642051fd2
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 21681 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
2416dbec6f83df43d7eabe2c1f502587…(2420 B)- Format version
0x01- Context string
SIGNET/PQBLOCK/EXP0- Block key the nodes require
- SHA-256
eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad
Transactions
| txid | Inputs | Outputs | Amount | Fee |
|---|---|---|---|---|
| 5aaf1569e94e…6bb90951bd73 coinbase | 1 | 2 | 50 |