Block 21557
- Hash
0000012ce0b9c81d5700ab47318c1f893a8fbb0e7cc91c25a0510892b529b3ff- Confirmations
- 19057
- Time
- 2026-10-12 23:53:22 UTC
- Median time
- 2026-10-12 23:44:47 UTC
- Transactions
- 1
- Size
- 2,772
- Weight
- 10,980
- Difficulty
- 0.0031405554
- Bits
1e013e69- Merkle root
28ddbf90acbf385495899482ee90a91e5ac3ed87b18bab08a92e5527d778bfb2- Previous block
- 000000fcfb0a5db3deedd57b8783963a5e2773bd00632c937d1d96d3068f26d6
- Next block
- 000000dd03bf79ea1b322b9f2a8fd84d673c787f4192af148a419bd47498f3c4
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 21557 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
7fe9d76c5e980f7eb185bcdd0f2e5f1b…(2420 B)- Format version
0x01- Context string
SIGNET/PQBLOCK/EXP0- Block key the nodes require
- SHA-256
eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad
Transactions
| txid | Inputs | Outputs | Amount | Fee |
|---|---|---|---|---|
| 28ddbf90acbf…5527d778bfb2 coinbase | 1 | 2 | 50 |