I need help with hexadecimal keys

[nicehome]

Hi - I am very beginner  !
sorry about my english not so well 

I bought the coin a long time ago and forgot it completely - knowing that I did nothing but buy and copy the keys only !
what is the keys ?
the keys is 4 hexadecimal keys  (0-9-A-F)

In the same keys on the last line 8 characters mix numbers and latters - maybe checksum ?

and i found something name Machine Code 13 mix numbers and latters ( small Latters ) - maybe ATM bitcoin ?

Some of my memories have been erased over the years but offcourse thanks for the god i still have the old computer

I don't know what these keys are - do the previous procedures have four keys - one for the secret key, one for signature, one for the public address and one for identity?

I don't know what to do with these keys - are there any specific steps?

thanks for helping

[nc50lc]

ECDSA Private key in HEX should be 64-characters.

Read this thread to know about the other possible private key formats, specifically the part about "Bitcoin private keys":
[overview] Recover Bitcoin from any old storage format

[pooya87]

Hexadecimal encoding doesn't use checksum and it is very uncommon to print private keys in this format. Instead when there is 32-byte (64 hexadecimal characters) string it is more likely to be a transaction ID (SHA256 hash).

[nicehome]

Hexadecimal encoding doesn't use checksum and it is very uncommon to print private keys in this format. Instead when there is 32-byte (64 hexadecimal characters) string it is more likely to be a transaction ID (SHA256 hash).

yes it is transaction ID (SHA256 hash)

each key 64 characters

they are 4 keys

[nicehome]

ECDSA Private key in HEX should be 64-characters.

Read this thread to know about the other possible private key formats, specifically the part about "Bitcoin private keys":
[overview] Recover Bitcoin from any old storage format

yes i have same this  Private Key Hexadecimal (64 characters [0-9A-F]) (less common).
Example: CA9A061710B8BC582E1B8BB60D0F3F2751791888AB5C18737620087ABDF74A05

the next step is base58 or ?

[nc50lc]

the next step is base58 or ?

Yes, if those are private keys, the next step to be able to import those to a wallet is to convert them into WIF (base58check).
The easiest way is to use a converter tool.

This one should work (brainwalletx.github.io/#converter) but must be used in an offline environment and downloaded & run from source.
To convert the keys, go to "Converter" tab, copy your PrvKey (HEX) into the "Source Text", then select "B58Check" in the 'Convert To' tabs.
The result should be the private key in WIF format, depending on the age of those keys, you may or not need to convert them into compressed WIF.

Then import those keys to a wallet, I'd suggest Electrum (electrum.org).
Here's the steps to verify Electrum (recommended before using it): https://bitcoinelectrum.com/how-to-verify-your-electrum-download/
Here's the steps for importing keys: https://bitcoinelectrum.com/importing-your-private-keys-into-electrum/

Note: Do not share the private keys.

[nicehome]

the next step is base58 or ?

Yes, if those are private keys, the next step to be able to import those to a wallet is to convert them into WIF (base58check).
The easiest way is to use a converter tool.

This one should work (brainwalletx.github.io/#converter) but must be used in an offline environment and downloaded & run from source.
To convert the keys, go to "Converter" tab, copy your PrvKey (HEX) into the "Source Text", then select "B58Check" in the 'Convert To' tabs.
The result should be the private key in WIF format, depending on the age of those keys, you may or not need to convert them into compressed WIF.

Then import those keys to a wallet, I'd suggest Electrum (electrum.org).
Here's the steps to verify Electrum (recommended before using it): https://bitcoinelectrum.com/how-to-verify-your-electrum-download/
Here's the steps for importing keys: https://bitcoinelectrum.com/importing-your-private-keys-into-electrum/

Note: Do not share the private keys.

all keys or one by one ? for base58

[nc50lc]

One by one; pasting them all will produce invalid result.
The result should be similar to the WIF (Wallet Import Format) displayed in the linked thread above, it should start with '5'.

A wallet can import/export multiple private keys, you may have exported those 4.

[nicehome]

One by one; pasting them all will produce invalid result.
The result should be similar to the WIF (Wallet Import Format) displayed in the linked thread above, it should start with '5'.

A wallet can import/export multiple private keys, you may have exported those 4.

finished and all they start 5

[pooya87]

finished and all they start 5

You should use https://github.com/pointbiz/bitaddress.org instead. Download the repository (https://github.com/pointbiz/bitaddress.org/archive/refs/heads/master.zip) and open the bitaddress.org.html preferably on an air gap computer then go to "Wallet Details" tab and enter the hexadecimal strings in the first text box an click "View Details".
It would show you both compressed and uncompressed private keys with their corresponding addresses.
Now you can see if you recognize any of these addresses and copy them in a text file (in case you are offline) and then go to a block explorer such as https://blockchair.com/bitcoin and search each address (they all start with "1") to see if any of them have ever been used.

[nc50lc]

-snip-

finished and all they start 5

You can now import those to a wallet of your choice, or my suggested client: Electrum.
If you use Electrum, let the wallet open for a few minutes for it to sync (blockchain headers - 55mb file).
If there's no balance, those may not be private keys or those are for compressed public keys, in that case, use the tool in the post above.

[nicehome]

finished and all they start 5

You should use https://github.com/pointbiz/bitaddress.org instead. Download the repository (https://github.com/pointbiz/bitaddress.org/archive/refs/heads/master.zip) and open the bitaddress.org.html preferably on an air gap computer then go to "Wallet Details" tab and enter the hexadecimal strings in the first text box an click "View Details".
It would show you both compressed and uncompressed private keys with their corresponding addresses.
Now you can see if you recognize any of these addresses and copy them in a text file (in case you are offline) and then go to a block explorer such as https://blockchair.com/bitcoin and search each address (they all start with "1") to see if any of them have ever been used.

i seen 1 of thim compresed - it show 3 Addresses - Bitcoin BTC 0


Bitcoin Cash 0


Bitcoin SV BSV 0

whats that mean ?!

[nicehome]

-snip-

finished and all they start 5

You can now import those to a wallet of your choice, or my suggested client: Electrum.
If you use Electrum, let the wallet open for a few minutes for it to sync (blockchain headers - 55mb file).
If there's no balance, those may not be private keys or those are for compressed public keys, in that case, use the tool in the post above.

i didnt understand If you use Electrum, let the wallet open for a few minutes for it to sync (blockchain headers - 55mb file).
its open fast and i try all keys says 0 and try one of them says same thing 0

[NotATether]

i seen 1 of thim compresed - it show 3 Addresses - Bitcoin BTC 0


Bitcoin Cash 0


Bitcoin SV BSV 0

whats that mean ?!

I wouldn't worry about that: old BTC addresses are also valid Bitcoin Cash addresses and Bitcoin SV addresses. So on Blockchair, you should just focus on addresses labeled BTC.

[pooya87]

i seen 1 of thim compresed - it show 3 Addresses - Bitcoin BTC 0
Bitcoin Cash 0
Bitcoin SV BSV 0
whats that mean ?!

Since bitcoin source code is open and free to copy, there has been many useless altcoins that created copies of bitcoin and unfortunately they never changed anything when it comes to addresses (and many other things). So when you search a bitcoin address in a multi-coin block explorer such as blockchair they have no way of knowing which chain it belongs to hence they show all of them.

Since you know yours is a bitcoin address then as @NotATether said, just ignore the rest and focus on "Bitcoin BTC" for now, the rest are those useless altcoins.

[BlackHatCoiner]

its open fast and i try all keys says 0 and try one of them says same thing 0

If you imported both compressed and uncompressed addresses and none of them returned you a balance, then it means there isn't one.

[nicehome]

i seen 1 of thim compresed - it show 3 Addresses - Bitcoin BTC 0
Bitcoin Cash 0
Bitcoin SV BSV 0
whats that mean ?!

Since bitcoin source code is open and free to copy, there has been many useless altcoins that created copies of bitcoin and unfortunately they never changed anything when it comes to addresses (and many other things). So when you search a bitcoin address in a multi-coin block explorer such as blockchair they have no way of knowing which chain it belongs to hence they show all of them.

Since you know yours is a bitcoin address then as @NotATether said, just ignore the rest and focus on "Bitcoin BTC" for now, the rest are those useless altcoins.

yeah
I bought them between (2009 - 2012) Procedures may vary 

[nicehome]

its open fast and i try all keys says 0 and try one of them says same thing 0

If you imported both compressed and uncompressed addresses and none of them returned you a balance, then it means there isn't one.

this wallet is watching only this mean you will not able to spend Bitcoins with it . make sure you own the seed phrase or the private keys befor you request Bitcoins to be sent to this wallet

[nc50lc]

-snip-

i didnt understand If you use Electrum, let the wallet open for a few minutes for it to sync (blockchain headers - 55mb file).
its open fast and i try all keys says 0 and try one of them says same thing 0

Electrum needs the blockchain headers to function which it doesn't have initially.
So if it's the first time Electrum is used, it will have to download the said file which is about 55mb in size so you'll have to wait for it to be completed in the background.

But if about 10 minutes have passed, your internet is "good" and the Electrum's connection status is 'Green' (lower-right circle),
then the imported WIF keys are really empty (at least for P2PKH outputs).

I bought them between (2009 - 2012) Procedures may vary  

It barely reached the year when compressed public key was introduced to Bitcoin client,
If it's before April 2012, you shouldn't be looking for compressed addresses because it's not available in the client at that time.

You may have to search for P2PK outputs as well, which doesn't have an address but the public key itself.
IDK any other client that support it aside from Bitcoin Core; if you want, you can import those keys to Bitcoin Core but it will require you to download and verify the blockchain before you can check for balance.
Your transactions are quite early so you'll likely see the transactions earlier in the sync process if it has any balance.

Import command (do right after creating a "Blank Wallet"): https://bitcoincore.org/en/doc/0.21.0/rpc/wallet/importprivkey/
Use "false" rescan flag for the first three, then "true" to the last one.

[nicehome]

-snip-

i didnt understand If you use Electrum, let the wallet open for a few minutes for it to sync (blockchain headers - 55mb file).
its open fast and i try all keys says 0 and try one of them says same thing 0

Electrum needs the blockchain headers to function which it doesn't have initially.
So if it's the first time Electrum is used, it will have to download the said file which is about 55mb in size so you'll have to wait for it to be completed in the background.

But if about 10 minutes have passed, your internet is "good" and the Electrum's connection status is 'Green' (lower-right circle),
then the imported WIF keys are really empty (at least for P2PKH outputs).

I bought them between (2009 - 2012) Procedures may vary  

It barely reached the year when compressed public key was introduced to Bitcoin client,
If it's before April 2012, you shouldn't be looking for compressed addresses because it's not available in the client at that time.

You may have to search for P2PK outputs as well, which doesn't have an address but the public key itself.
IDK any other client that support it aside from Bitcoin Core; if you want, you can import those keys to Bitcoin Core but it will require you to download and verify the blockchain before you can check for balance.
Your transactions are quite early so you'll likely see the transactions earlier in the sync process if it has any balance.

Import command (do right after creating a "Blank Wallet"): https://bitcoincore.org/en/doc/0.21.0/rpc/wallet/importprivkey/
Use "false" rescan flag for the first three, then "true" to the last one.

i think the right choice is Bitcoin Core