Is there a publicly accessible website with detailed TCGA documentation, especially with TCGA barcode specification? A while ago there was: https://wiki.nci.nih.gov/display/TCGA/TCGA+Barcode (still indexed in Google, linked in a few Biostars responses and questions), but it now just shows an authentication request along with lines like:
"This system is provided for Government-authorized use only." "Unauthorized or improper use of this system is prohibited and may result in disciplinary action and/or civil and criminal penalties."
so it seems that this extremely useful resource is no longer available to the general public. Are there any alternatives? I tried https://cancergenome.nih.gov/abouttcga/aboutdata but it shows just general high level info. https://gdc.cancer.gov/resources-tcga-users/tcga-code-tables provides some of the important information, but is really useless without the barcode format description.