I actually had to address this in the altcoin world (back when that was a thing) because the C-CEX exchange would take money for &quot;destroying&quot; coins, but the method they used for destroying coins was just taking a video of them sending a wallet to the private key owned by a different wallet and then deleting the wallet. (which they could&#x27;ve easily kept a backup of). There were even some altcoin devs that paid me to hardfork their coin to ensure that coins sent to the address the exchange used could no longer be spent on the network.<p>Anyway, it&#x27;s not the &quot;good&quot; OP_RETURN method, but to send your coins from any altcoin to a provably impossible address I made a utility and print out of addresses for sending to &quot;an address owned by the public key hash of 0&quot; <a href="http:&#x2F;&#x2F;earlz.net&#x2F;view&#x2F;2014&#x2F;10&#x2F;22&#x2F;0340&#x2F;provably-spendable-altcoin-burn-addresses" rel="nofollow">http:&#x2F;&#x2F;earlz.net&#x2F;view&#x2F;2014&#x2F;10&#x2F;22&#x2F;0340&#x2F;provably-spendable-alt...</a>