If he wants his biological children (who resulted from his sperm donation) to find him he just has to use 23&Me (as do those children). That's how I found out

If he wants his biological children (who resulted from his sperm donation) to find him he just has to use 23&Me (as do those children). That's how I found out I have a bunch of half-brothers and sisters around the US. If you want to open source your DNA, that's different- just post your BAM or FASTA files with a copyright and license. Or do what I did and contribute to PGP: https://my.pgp-hms.org/profile/hu80855C https://my.pgp-hms.org/profile/hu80855C