Block 21900
- Hash
0000013af3af2c35f64a7140a39517f700250d22d3dbd1bb15d77d3f62a7474d- Confirmations
- 20189
- Time
- 2026-10-13 09:26:32 UTC
- Median time
- 2026-10-13 09:18:16 UTC
- Transactions
- 1
- Size
- 2,772
- Weight
- 10,980
- Difficulty
- 0.0031405554
- Bits
1e013e69- Merkle root
897f420e4de7bc1ee15ce10c13f54f4ac2e1917508158d66154dddaa5bdc3e83- Previous block
- 000000fd955e183763cb672ae1aaf0cb122259f30a7f250c3157dcfa1cc7d75f
- Next block
- 0000006abde9db1bfceeaeb74a0de7c29403685d6ccdaebf519165b11011f49e
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 21900 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
9549918b0b97a4ddc166a37916040d12…(2420 B)- Format version
0x01- Context string
SIGNET/PQBLOCK/EXP0- Block key the nodes require
- SHA-256
eee8548f51f25492de3ae430b7ce7ec549edfaa663b8f577f026ce0498fdd6ad
Transactions
| txid | Inputs | Outputs | Amount | Fee |
|---|---|---|---|---|
| 897f420e4de7…ddaa5bdc3e83 coinbase | 1 | 2 | 50 |