Block 21551
- Hash
0000003e3208967eeb0e20118882642f57dd0b1f78065ed248b5b7f142b0beff- Confirmations
- 19429
- Time
- 2026-10-12 23:42:55 UTC
- Median time
- 2026-10-12 23:34:07 UTC
- Transactions
- 1
- Size
- 2,772
- Weight
- 10,980
- Difficulty
- 0.0031405554
- Bits
1e013e69- Merkle root
ecb8a31159f12e396b7840ad10275e1d6f7ccc52598135ceaa6ae4e2abc3ef52- Previous block
- 0000007e8542a6e66ade05dd1747216b94b63d9663bc8c16266687be3a44029e
- Next block
- 00000135026539b4224fca940bcbbaedda12d24baca34897f84d73b7adddaf6a
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 21551 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
f21ce36cc17cecbb9ce9dcc92fa0051e…(2420 B)- Format version
0x01- Context string
SIGNET/PQBLOCK/EXP0- Block key the nodes require
- SHA-256
eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad
Transactions
| txid | Inputs | Outputs | Amount | Fee |
|---|---|---|---|---|
| ecb8a31159f1…e4e2abc3ef52 coinbase | 1 | 2 | 50 |