[Scaur]

Not solo, but small enough - https://txbatch.com.

It started out from a growing frustration myself and my coworkers[1] had the whole year, the tedious process of checking block explorers[2]. By October I was fed up enough with it to quit, initially intending to take another job but changing plans mid-way to co-found txBatch, short for "Transaction Batch", a bulk search blockchain explorer[3].

We worked all through November and December, finally getting a live product (supporting BTC, ETH[4], and USDT) - and after the holidays will be continuing to set up people on trials and reach out to exchanges.

If anyone on HN runs a crypto business that could use this, feel free to reach out to me - james at txbatch dot com.

Or if you know anyone - check out our referral page at https://refer.txbatch.com/#friend.

[1] Coworkers - at a cryptocurrency exchange. [2] Block explorers - specialised websites that show details of transactions on a blockchain e.g. https://blockchain.com/explorer [3] Bulk search, in contrast to the individual, single-chain search engines that are commonly available. [4] Including all ERC20s, internal transfers.