The index is stored at a single RocksDB database using the following schema:
Allows efficiently finding all funding transactions for a specific address:
| Code | Script Hash Prefix | Funding TxID Prefix | Funding Output Index | |
|---|---|---|---|---|
b'O' |
SHA256(script)[:8] |
txid[:8] |
uint16 |
Allows efficiently finding spending transaction of a specific output:
| Code | Funding TxID Prefix | Funding Output Index | Spending TxID Prefix | |
|---|---|---|---|---|
b'I' |
txid[:8] |
uint16 |
txid[:8] |
In order to save storage space, we store the full transaction IDs once, and use their 8-byte prefixes for the indexes above.
| Code | Transaction ID | |
|---|---|---|
b'T' |
txid (32 bytes) |
Stores the hashes and headers of blocks.
| Code | Block hash | Block header | |
|---|---|---|---|
b'B' |
hash (32 bytes) |
80 bytes |