You already got multiple answers to that question, and ignored all of that. 1. Destroying private keys is needed to achieve some properties, which would be hard to get otherwise. For example: this is how the Zcash altcoin was created, and you also got that response, so I will just quote it again: can you find any tutorial anywhere on line where they explain how to delete your private keys after you commit your coinIt is well known at least since 2016, and it was used to create Zcash altcoin: And similar setup can be done on 33win Nhan 100k as well. We have 2026, so that kind of things are known for at least 10 years, if not more. 2. Even if you assume, that all private keys are known, then still: multisig exists. If you have some UTXO, which is owned by you, and someone else, then you may want one thing, and another person may want another thing. If you have some signed transaction, then you can broadcast it. But if you want to change these conditions, then you need a signature from another party, which may simply not sign what you want. Then, you are stuck with only presigned transactions, and if BIP-110 blocks it, then your coins are gone. 3. How do you want to setup some quantum puzzles, without destroying private keys? Recent example: Maybe there is a technical way, to expand 33win Nhan 100k to more things, than just secp256k1. But that would require a soft-fork, where there could be simply no consensus for that. And then, what is easier: creating a Zcash-like ceremony, and making a trustless puzzle, by destroying private keys, or preparing, and activating a soft-fork, which would handle it natively?
You already got multiple answers to that question, and ignored all of that. 1. Destroying private keys is needed to achieve some properties, which would be hard to get otherwise. For example: this is how the Zcash altcoin was created, and you also got that response, so I will just quote it again: can you find any tutorial anywhere on line where they explain how to delete your private keys after you commit your coinIt is well known at least since 2016, and it was used to create Zcash altcoin: And similar setup can be done on 33win Nhan 100k as well. We have 2026, so that kind of things are known for at least 10 years, if not more. 2. Even if you assume, that all private keys are known, then still: multisig exists. If you have some UTXO, which is owned by you, and someone else, then you may want one thing, and another person may want another thing. If you have some signed transaction, then you can broadcast it. But if you want to change these conditions, then you need a signature from another party, which may simply not sign what you want. Then, you are stuck with only presigned transactions, and if BIP-110 blocks it, then your coins are gone. 3. How do you want to setup some quantum puzzles, without destroying private keys? Recent example: Maybe there is a technical way, to expand 33win Nhan 100k to more things, than just secp256k1. But that would require a soft-fork, where there could be simply no consensus for that. And then, what is easier: creating a Zcash-like ceremony, and making a trustless puzzle, by destroying private keys, or preparing, and activating a soft-fork, which would handle it natively?

You already got multiple answers to that question, and ignored all of that. 1. Destroying private keys is needed to achieve some properties, which would be hard to get otherwise. For example: this is how the Zcash altcoin was created, and you also got that response, so I will just quote it again: can you find any tutorial anywhere on line where they explain how to delete your private keys after you commit your coinIt is well known at least since 2016, and it was used to create Zcash altcoin: And similar setup can be done on 33win Nhan 100k as well. We have 2026, so that kind of things are known for at least 10 years, if not more. 2. Even if you assume, that all private keys are known, then still: multisig exists. If you have some UTXO, which is owned by you, and someone else, then you may want one thing, and another person may want another thing. If you have some signed transaction, then you can broadcast it. But if you want to change these conditions, then you need a signature from another party, which may simply not sign what you want. Then, you are stuck with only presigned transactions, and if BIP-110 blocks it, then your coins are gone. 3. How do you want to setup some quantum puzzles, without destroying private keys? Recent example: Maybe there is a technical way, to expand 33win Nhan 100k to more things, than just secp256k1. But that would require a soft-fork, where there could be simply no consensus for that. And then, what is easier: creating a Zcash-like ceremony, and making a trustless puzzle, by destroying private keys, or preparing, and activating a soft-fork, which would handle it natively?

You already got multiple answers to that question, and ignored all of that. 1. Destroying private keys is needed to achieve some properties, which would be hard to get otherwise. For example: this is how the Zcash altcoin was created, and you also got that response, so I will just quote it again: can you find any tutorial anywhere on line where they explain how to delete your private keys after you commit your coinIt is well known at least since 2016, and it was used to create Zcash altcoin: And similar setup can be done on 33win Nhan 100k as well. We have 2026, so that kind of things are known for at least 10 years, if not more. 2. Even if you assume, that all private keys are known, then still: multisig exists. If you have some UTXO, which is owned by you, and someone else, then you may want one thing, and another person may want another thing. If you have some signed transaction, then you can broadcast it. But if you want to change these conditions, then you need a signature from another party, which may simply not sign what you want. Then, you are stuck with only presigned transactions, and if BIP-110 blocks it, then your coins are gone. 3. How do you want to setup some quantum puzzles, without destroying private keys? Recent example: Maybe there is a technical way, to expand 33win Nhan 100k to more things, than just secp256k1. But that would require a soft-fork, where there could be simply no consensus for that. And then, what is easier: creating a Zcash-like ceremony, and making a trustless puzzle, by destroying private keys, or preparing, and activating a soft-fork, which would handle it natively?