How the get the relative transactions?

[yangyile1990]

hello sir. I use the https://testnet.tonviewer.com/transaction/77fb3cc4ad47a5d9dcd178f91d5454eee42e14c267056375975f227e6df78d92 or the https://testnet.tonviewer.com/transaction/4c53b8e11851672876e354f537d4ae9d16cf3f9e9f7c3bd47ca2b1fbc8fba0db can get almost same result.

what is the logic of this page?

if I only have 77fb3cc4ad47a5d9dcd178f91d5454eee42e14c267056375975f227e6df78d92 how can I get the 4c53b8e11851672876e354f537d4ae9d16cf3f9e9f7c3bd47ca2b1fbc8fba0db

or If I only have 4c53b8e11851672876e354f537d4ae9d16cf3f9e9f7c3bd47ca2b1fbc8fba0db how can I get 77fb3cc4ad47a5d9dcd178f91d5454eee42e14c267056375975f227e6df78d92

the tonviewer is the tonviewer.

but I want to use the api to get the result. not see by eyes.

which api can I use?

this api is not ok: https://testnet.toncenter.com/api/v2/getBlockTransactions?workchain=0&shard=8000000000000000&seqno=17229018&root_hash=77fb3cc4ad47a5d9dcd178f91d5454eee42e14c267056375975f227e6df78d92&count=40 because it give me 4 results. while I need is 2. so please help me.

[mr-tron]

https://tonapi.io/v2/traces/{hash}