Private by default.
Auditable by choice.
Opacra is a coin with its own blockchain. Every payment hides who sent it, who got it and how much moved. If you ever need to prove a payment, you can.
Mainnet opens in
Sunday 8 November at 14:00 UTC ยท Block 1
paid your shop 0.05 OPCA.
This is how a payment looks to everyone on the network.
Monero's privacy, with a few things done differently
Spend in 5 minutes
Blocks come every 30 seconds. Coins you receive can move again after 10 blocks, about 5 minutes. On Monero that takes about 20.
Funding you can check
5% of each block's new coins pays for development, and the network rejects any block that skips it. The fund's view key is public, so anyone can see what it receives.
No head start for anyone
No premine, no ICO. The genesis block is made on launch morning, and blocks dated before the launch time are invalid, so we can't mine early either.
Mined on normal CPUs
RandomOPCA is RandomX with its own salt. Monero's pools and hash-rental markets can't point at Opacra without Opacra-specific software.
Built for a small chain
Difficulty catches up in about 30 minutes instead of a day, and side chains can't walk their difficulty down to nothing.
Checkpoints on standby
If they're ever needed, signed checkpoints reach nodes through DNS in about 5 minutes. A wrong one costs no blocks.
Look it up yourself
Every block and transaction is on the public explorer. The testnet keeps its own at testnet-explorer.opacra.org.
How it compares
| Opacra | Monero | |
|---|---|---|
| Block time | 30 seconds | 120 seconds |
| Spendable after | about 5 minutes | about 20 minutes |
| Mined coins unlock | about 30 minutes | about 2 hours |
| Main supply | 10 million | about 18.1 million |
| Tail reward | 0.05 a block | 0.6 a block |
| Difficulty reacts in | about 30 minutes | about a day |
| Development fund in the block reward | 5% of new coins | none |
Mainnet is open
Mainnet opened to everyone at the same moment, with full rewards from the first block. The testnet keeps running, with coins that have no value, for trying things out.