diff --git a/metadata/datasets.schema.yaml b/metadata/datasets.schema.yaml
index a5123e9b..59ee1c9a 100644
--- a/metadata/datasets.schema.yaml
+++ b/metadata/datasets.schema.yaml
@@ -112,6 +112,10 @@ mapping:
             type: str
             required: false
             unique: false
+          "mirror_of":
+            type: str
+            required: false
+            unique: false
           "species_code":
             type: str
             required: false
diff --git a/metadata/datasets/goa.yaml b/metadata/datasets/goa.yaml
index 3648e9c7..2b049c87 100644
--- a/metadata/datasets/goa.yaml
+++ b/metadata/datasets/goa.yaml
@@ -16,7 +16,8 @@ datasets:
    dataset: goa_chicken
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/CHICKEN/goa_chicken.gpa.gz
+   source: https://mirror.geneontology.io/goa_chicken.gpa.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/CHICKEN/goa_chicken.gpa.gz
    entity_type: protein
    status: active
    species_code: Ggal
@@ -36,7 +37,8 @@ datasets:
    dataset: goa_chicken
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/CHICKEN/goa_chicken.gpi.gz
+   source: https://mirror.geneontology.io/goa_chicken.gpi.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/CHICKEN/goa_chicken.gpi.gz
    entity_type: protein
    status: active
    species_code: Ggal
@@ -56,7 +58,8 @@ datasets:
    dataset: goa_chicken_complex
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/CHICKEN/goa_chicken_complex.gpa.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/CHICKEN/goa_chicken_complex.gpa.gz
+   source: https://mirror.geneontology.io/goa_chicken_complex.gpa.gz
    entity_type: complex
    status: active
    species_code: Ggal
@@ -76,7 +79,8 @@ datasets:
    dataset: goa_chicken_complex
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/CHICKEN/goa_chicken_complex.gpi.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/CHICKEN/goa_chicken_complex.gpi.gz
+   source: https://mirror.geneontology.io/goa_chicken_complex.gpi.gz
    entity_type: complex
    status: active
    species_code: Ggal
@@ -96,7 +100,8 @@ datasets:
    dataset: goa_chicken_isoform
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/CHICKEN/goa_chicken_isoform.gpa.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/CHICKEN/goa_chicken_isoform.gpa.gz
+   source: https://mirror.geneontology.io/goa_chicken_isoform.gpa.gz
    entity_type: isoform
    status: active
    species_code: Ggal
@@ -116,7 +121,8 @@ datasets:
    dataset: goa_chicken_isoform
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/CHICKEN/goa_chicken_isoform.gpi.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/CHICKEN/goa_chicken_isoform.gpi.gz
+   source: https://mirror.geneontology.io/goa_chicken_isoform.gpi.gz
    entity_type: isoform
    status: active
    species_code: Ggal
@@ -136,7 +142,8 @@ datasets:
    dataset: goa_chicken_rna
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/CHICKEN/goa_chicken_rna.gpa.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/CHICKEN/goa_chicken_rna.gpa.gz
+   source: https://mirror.geneontology.io/goa_chicken_rna.gpa.gz
    entity_type: rna
    status: active
    species_code: Ggal
@@ -156,7 +163,8 @@ datasets:
    dataset: goa_chicken_rna
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/CHICKEN/goa_chicken_rna.gpi.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/CHICKEN/goa_chicken_rna.gpi.gz
+   source: https://mirror.geneontology.io/goa_chicken_rna.gpi.gz
    entity_type: rna
    status: active
    species_code: Ggal
@@ -176,7 +184,8 @@ datasets:
    dataset: goa_cow
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/COW/goa_cow.gpa.gz
+   source: https://mirror.geneontology.io/goa_cow.gpa.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/COW/goa_cow.gpa.gz
    entity_type: protein
    status: active
    species_code: Btau
@@ -194,7 +203,8 @@ datasets:
    dataset: goa_cow
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/COW/goa_cow.gpi.gz
+   source: https://mirror.geneontology.io/goa_cow.gpi.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/COW/goa_cow.gpi.gz
    entity_type: protein
    status: active
    species_code: Btau
@@ -212,7 +222,8 @@ datasets:
    dataset: goa_cow_complex
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/COW/goa_cow_complex.gpa.gz
+   source: https://mirror.geneontology.io/goa_cow_complex.gpa.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/COW/goa_cow_complex.gpa.gz
    entity_type: complex
    status: active
    species_code: Btau
@@ -230,7 +241,8 @@ datasets:
    dataset: goa_cow_complex
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/COW/goa_cow_complex.gpi.gz
+   source: https://mirror.geneontology.io/goa_cow_complex.gpi.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/COW/goa_cow_complex.gpi.gz
    entity_type: complex
    status: active
    species_code: Btau
@@ -248,7 +260,8 @@ datasets:
    dataset: goa_cow_isoform
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/COW/goa_cow_isoform.gpa.gz
+   source: https://mirror.geneontology.io/goa_cow_isoform.gpa.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/COW/goa_cow_isoform.gpa.gz
    entity_type: isoform
    status: active
    species_code: Btau
@@ -266,7 +279,8 @@ datasets:
    dataset: goa_cow_isoform
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/COW/goa_cow_isoform.gpi.gz
+   source: https://mirror.geneontology.io/goa_cow_isoform.gpi.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/COW/goa_cow_isoform.gpi.gz
    entity_type: isoform
    status: active
    species_code: Btau
@@ -284,7 +298,8 @@ datasets:
    dataset: goa_cow_rna
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/COW/goa_cow_rna.gpa.gz
+   source: https://mirror.geneontology.io/goa_cow_rna.gpa.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/COW/goa_cow_rna.gpa.gz
    entity_type: rna
    status: active
    species_code: Btau
@@ -302,7 +317,8 @@ datasets:
    dataset: goa_cow_rna
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/COW/goa_cow_rna.gpi.gz
+   source: https://mirror.geneontology.io/goa_cow_rna.gpi.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/COW/goa_cow_rna.gpi.gz
    entity_type: rna
    status: active
    species_code: Btau
@@ -320,7 +336,8 @@ datasets:
    dataset: goa_dog
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/DOG/goa_dog.gpa.gz
+   source: https://mirror.geneontology.io/goa_dog.gpa.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/DOG/goa_dog.gpa.gz
    entity_type: protein
    status: active
    species_code: Cfam
@@ -336,7 +353,8 @@ datasets:
    dataset: goa_dog
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/DOG/goa_dog.gpi.gz
+   source: https://mirror.geneontology.io/goa_dog.gpi.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/DOG/goa_dog.gpi.gz
    entity_type: protein
    status: active
    species_code: Cfam
@@ -352,7 +370,8 @@ datasets:
    dataset: goa_dog_complex
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/DOG/goa_dog_complex.gpa.gz
+   source: https://mirror.geneontology.io/goa_dog_complex.gpa.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/DOG/goa_dog_complex.gpa.gz
    entity_type: complex
    status: active
    species_code: Cfam
@@ -368,7 +387,8 @@ datasets:
    dataset: goa_dog_complex
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/DOG/goa_dog_complex.gpi.gz
+   source: https://mirror.geneontology.io/goa_dog_complex.gpi.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/DOG/goa_dog_complex.gpi.gz
    entity_type: complex
    status: active
    species_code: Cfam
@@ -384,7 +404,8 @@ datasets:
    dataset: goa_dog_isoform
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/DOG/goa_dog_isoform.gpa.gz
+   source: https://mirror.geneontology.io/goa_dog_isoform.gpa.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/DOG/goa_dog_isoform.gpa.gz
    entity_type: isoform
    status: active
    species_code: Cfam
@@ -400,7 +421,8 @@ datasets:
    dataset: goa_dog_isoform
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/DOG/goa_dog_isoform.gpi.gz
+   source: https://mirror.geneontology.io/goa_dog_isoform.gpi.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/DOG/goa_dog_isoform.gpi.gz
    entity_type: isoform
    status: active
    species_code: Cfam
@@ -416,7 +438,8 @@ datasets:
    dataset: goa_dog_rna
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/DOG/goa_dog_rna.gpa.gz
+   source: https://mirror.geneontology.io/goa_dog_rna.gpa.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/DOG/goa_dog_rna.gpa.gz
    entity_type: rna
    status: active
    species_code: Cfam
@@ -432,7 +455,8 @@ datasets:
    dataset: goa_dog_rna
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/DOG/goa_dog_rna.gpi.gz
+   source: https://mirror.geneontology.io/goa_dog_rna.gpi.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/DOG/goa_dog_rna.gpi.gz
    entity_type: rna
    status: active
    species_code: Cfam
@@ -448,7 +472,8 @@ datasets:
    dataset: goa_human
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/HUMAN/goa_human.gpa.gz
+   source: https://mirror.geneontology.io/goa_human.gpa.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/HUMAN/goa_human.gpa.gz
    entity_type: protein
    status: active
    species_code: Hsap
@@ -464,7 +489,8 @@ datasets:
    dataset: goa_human
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/HUMAN/goa_human.gpi.gz
+   source: https://mirror.geneontology.io/goa_human.gpi.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/HUMAN/goa_human.gpi.gz
    entity_type: protein
    status: active
    species_code: Hsap
@@ -480,7 +506,8 @@ datasets:
    dataset: goa_human_complex
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/HUMAN/goa_human_complex.gpa.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/HUMAN/goa_human_complex.gpa.gz
+   source: https://mirror.geneontology.io/goa_human_complex.gpa.gz
    entity_type: complex
    status: active
    species_code: Hsap
@@ -496,7 +523,8 @@ datasets:
    dataset: goa_human_complex
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/HUMAN/goa_human_complex.gpi.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/HUMAN/goa_human_complex.gpi.gz
+   source: https://mirror.geneontology.io/goa_human_complex.gpi.gz
    entity_type: complex
    status: active
    species_code: Hsap
@@ -512,7 +540,8 @@ datasets:
    dataset: goa_human_isoform
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/HUMAN/goa_human_isoform.gpa.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/HUMAN/goa_human_isoform.gpa.gz
+   source: https://mirror.geneontology.io/goa_human_isoform.gpa.gz
    entity_type: isoform
    status: active
    species_code: Hsap
@@ -528,7 +557,8 @@ datasets:
    dataset: goa_human_isoform
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/HUMAN/goa_human_isoform.gpi.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/HUMAN/goa_human_isoform.gpi.gz
+   source: https://mirror.geneontology.io/goa_human_isoform.gpi.gz
    entity_type: isoform
    status: active
    species_code: Hsap
@@ -544,7 +574,8 @@ datasets:
    dataset: goa_human_rna
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/HUMAN/goa_human_rna.gpa.gz
+   source: https://mirror.geneontology.io/goa_human_rna.gpa.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/HUMAN/goa_human_rna.gpa.gz
    entity_type: rna
    status: active
    species_code: Hsap
@@ -560,7 +591,8 @@ datasets:
    dataset: goa_human_rna
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/HUMAN/goa_human_rna.gpi.gz
+   source: https://mirror.geneontology.io/goa_human_rna.gpi.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/HUMAN/goa_human_rna.gpi.gz
    entity_type: rna
    status: active
    species_code: Hsap
@@ -576,7 +608,8 @@ datasets:
    dataset: goa_pig
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/PIG/goa_pig.gpa.gz
+   source: https://mirror.geneontology.io/goa_pig.gpa.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/PIG/goa_pig.gpa.gz
    entity_type: protein
    status: active
    species_code: Sscr
@@ -592,7 +625,8 @@ datasets:
    dataset: goa_pig
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/PIG/goa_pig.gpi.gz
+   source: https://mirror.geneontology.io/goa_pig.gpi.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/PIG/goa_pig.gpi.gz
    entity_type: protein
    status: active
    species_code: Sscr
@@ -608,7 +642,8 @@ datasets:
    dataset: goa_pig_complex
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/PIG/goa_pig_complex.gpa.gz
+   source: https://mirror.geneontology.io/goa_pig_complex.gpa.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/PIG/goa_pig_complex.gpa.gz
    entity_type: complex
    status: active
    species_code: Sscr
@@ -624,7 +659,8 @@ datasets:
    dataset: goa_pig_complex
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/PIG/goa_pig_complex.gpi.gz
+   source: https://mirror.geneontology.io/goa_pig_complex.gpi.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/PIG/goa_pig_complex.gpi.gz
    entity_type: complex
    status: active
    species_code: Sscr
@@ -640,7 +676,8 @@ datasets:
    dataset: goa_pig_isoform
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/PIG/goa_pig_isoform.gpa.gz
+   source: https://mirror.geneontology.io/goa_pig_isoform.gpa.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/PIG/goa_pig_isoform.gpa.gz
    entity_type: isoform
    status: active
    species_code: Sscr
@@ -656,7 +693,8 @@ datasets:
    dataset: goa_pig_isoform
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/PIG/goa_pig_isoform.gpi.gz
+   source: https://mirror.geneontology.io/goa_pig_isoform.gpi.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/PIG/goa_pig_isoform.gpi.gz
    entity_type: isoform
    status: active
    species_code: Sscr
@@ -672,7 +710,8 @@ datasets:
    dataset: goa_pig_rna
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/PIG/goa_pig_rna.gpa.gz
+   source: https://mirror.geneontology.io/goa_pig_rna.gpa.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/PIG/goa_pig_rna.gpa.gz
    entity_type: rna
    status: active
    species_code: Sscr
@@ -688,7 +727,8 @@ datasets:
    dataset: goa_pig_rna
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/PIG/goa_pig_rna.gpi.gz
+   source: https://mirror.geneontology.io/goa_pig_rna.gpi.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/PIG/goa_pig_rna.gpi.gz
    entity_type: rna
    status: active
    species_code: Sscr
@@ -704,7 +744,8 @@ datasets:
    dataset: goa_chicken
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/CHICKEN/goa_chicken.gaf.gz
+   source: https://mirror.geneontology.io/goa_chicken.gaf.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/CHICKEN/goa_chicken.gaf.gz
    entity_type: protein
    status: active
    species_code: Ggal
@@ -724,7 +765,8 @@ datasets:
    dataset: goa_chicken_complex
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/CHICKEN/goa_chicken_complex.gaf.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/CHICKEN/goa_chicken_complex.gaf.gz
+   source: https://mirror.geneontology.io/goa_chicken_complex.gaf.gz
    entity_type: complex
    status: active
    species_code: Ggal
@@ -744,7 +786,8 @@ datasets:
    dataset: goa_chicken_isoform
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/CHICKEN/goa_chicken_isoform.gaf.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/CHICKEN/goa_chicken_isoform.gaf.gz
+   source: https://mirror.geneontology.io/goa_chicken_isoform.gaf.gz
    entity_type: isoform
    status: active
    species_code: Ggal
@@ -764,7 +807,8 @@ datasets:
    dataset: goa_chicken_rna
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/CHICKEN/goa_chicken_rna.gaf.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/CHICKEN/goa_chicken_rna.gaf.gz
+   source: https://mirror.geneontology.io/goa_chicken_rna.gaf.gz
    entity_type: rna
    status: active
    species_code: Ggal
@@ -784,7 +828,8 @@ datasets:
    dataset: goa_cow
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/COW/goa_cow.gaf.gz
+   source: https://mirror.geneontology.io/goa_cow.gaf.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/COW/goa_cow.gaf.gz
    entity_type: protein
    status: active
    species_code: Btau
@@ -802,7 +847,8 @@ datasets:
    dataset: goa_cow_complex
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/COW/goa_cow_complex.gaf.gz
+   source: https://mirror.geneontology.io/goa_cow_complex.gaf.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/COW/goa_cow_complex.gaf.gz
    entity_type: complex
    status: active
    species_code: Btau
@@ -820,7 +866,8 @@ datasets:
    dataset: goa_cow_isoform
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/COW/goa_cow_isoform.gaf.gz
+   source: https://mirror.geneontology.io/goa_cow_isoform.gaf.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/COW/goa_cow_isoform.gaf.gz
    entity_type: isoform
    status: active
    species_code: Btau
@@ -838,7 +885,8 @@ datasets:
    dataset: goa_cow_rna
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/COW/goa_cow_rna.gaf.gz
+   source: https://mirror.geneontology.io/goa_cow_rna.gaf.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/COW/goa_cow_rna.gaf.gz
    entity_type: rna
    status: active
    species_code: Btau
@@ -856,7 +904,8 @@ datasets:
    dataset: goa_dog
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/DOG/goa_dog.gaf.gz
+   source: https://mirror.geneontology.io/goa_dog.gaf.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/DOG/goa_dog.gaf.gz
    entity_type: protein
    status: active
    species_code: Cfam
@@ -872,7 +921,8 @@ datasets:
    dataset: goa_dog_complex
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/DOG/goa_dog_complex.gaf.gz
+   source: https://mirror.geneontology.io/goa_dog_complex.gaf.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/DOG/goa_dog_complex.gaf.gz
    entity_type: complex
    status: active
    species_code: Cfam
@@ -888,7 +938,8 @@ datasets:
    dataset: goa_dog_isoform
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/DOG/goa_dog_isoform.gaf.gz
+   source: https://mirror.geneontology.io/goa_dog_isoform.gaf.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/DOG/goa_dog_isoform.gaf.gz
    entity_type: isoform
    status: active
    species_code: Cfam
@@ -904,7 +955,8 @@ datasets:
    dataset: goa_dog_rna
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/DOG/goa_dog_rna.gaf.gz
+   source: https://mirror.geneontology.io/goa_dog_rna.gaf.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/DOG/goa_dog_rna.gaf.gz
    entity_type: rna
    status: active
    species_code: Cfam
@@ -920,7 +972,8 @@ datasets:
    dataset: goa_human
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/HUMAN/goa_human.gaf.gz
+   source: https://mirror.geneontology.io/goa_human.gaf.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/HUMAN/goa_human.gaf.gz
    entity_type: protein
    status: active
    species_code: Hsap
@@ -952,7 +1005,8 @@ datasets:
    dataset: goa_human_isoform
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/HUMAN/goa_human_isoform.gaf.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/HUMAN/goa_human_isoform.gaf.gz
+   source: https://mirror.geneontology.io/goa_human_isoform.gaf.gz
    entity_type: isoform
    status: active
    species_code: Hsap
@@ -968,7 +1022,8 @@ datasets:
    dataset: goa_human_rna
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/HUMAN/goa_human_rna.gaf.gz
+   source: https://mirror.geneontology.io/goa_human_rna.gaf.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/HUMAN/goa_human_rna.gaf.gz
    entity_type: rna
    status: active
    species_code: Hsap
@@ -984,7 +1039,8 @@ datasets:
    dataset: goa_pdb
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/PDB/goa_pdb.gaf.gz
+   source: https://mirror.geneontology.io/goa_pdb.gaf.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/PDB/goa_pdb.gaf.gz
    entity_type: protein
    status: active
    species_code:
@@ -1000,7 +1056,8 @@ datasets:
    dataset: goa_pig
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/PIG/goa_pig.gaf.gz
+   source: https://mirror.geneontology.io/goa_pig.gaf.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/PIG/goa_pig.gaf.gz
    entity_type: protein
    status: active
    species_code: Sscr
@@ -1016,7 +1073,8 @@ datasets:
    dataset: goa_pig_complex
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/PIG/goa_pig_complex.gaf.gz
+   source: https://mirror.geneontology.io/goa_pig_complex.gaf.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/PIG/goa_pig_complex.gaf.gz
    entity_type: complex
    status: active
    species_code: Sscr
@@ -1032,7 +1090,8 @@ datasets:
    dataset: goa_pig_isoform
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/PIG/goa_pig_isoform.gaf.gz
+   source: https://mirror.geneontology.io/goa_pig_isoform.gaf.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/PIG/goa_pig_isoform.gaf.gz
    entity_type: isoform
    status: active
    species_code: Sscr
@@ -1048,7 +1107,8 @@ datasets:
    dataset: goa_pig_rna
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/PIG/goa_pig_rna.gaf.gz
+   source: https://mirror.geneontology.io/goa_pig_rna.gaf.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/PIG/goa_pig_rna.gaf.gz
    entity_type: rna
    status: active
    species_code: Sscr
@@ -1064,7 +1124,8 @@ datasets:
    dataset: goa_uniprot_all
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/UNIPROT/goa_uniprot_all.gaf.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/UNIPROT/goa_uniprot_all.gaf.gz
+   source: https://mirror.geneontology.io/goa_uniprot_all.gaf.gz
    entity_type: all
    status: active
    aggregates: goa
@@ -1080,7 +1141,8 @@ datasets:
    dataset: goa_uniprot_all
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/UNIPROT/goa_uniprot_all.gpi.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/UNIPROT/goa_uniprot_all.gpi.gz
+   source: https://mirror.geneontology.io/goa_uniprot_all.gpi.gz
    entity_type: all
    status: active
    aggregates: goa
@@ -1096,7 +1158,8 @@ datasets:
    dataset: goa_uniprot_all
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/UNIPROT/goa_uniprot_all.gpa.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/UNIPROT/goa_uniprot_all.gpa.gz
+   source: https://mirror.geneontology.io/goa_uniprot_all.gpa.gz
    entity_type: all
    status: active
    aggregates: goa
@@ -1112,7 +1175,8 @@ datasets:
    dataset: goa_uniprot_gcrp
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/UNIPROT/goa_uniprot_gcrp.gaf.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/UNIPROT/goa_uniprot_gcrp.gaf.gz
+   source: https://mirror.geneontology.io/goa_uniprot_gcrp.gaf.gz
    entity_type: all
    status: active
    aggregates: goa
@@ -1129,7 +1193,8 @@ datasets:
    dataset: goa_uniprot_gcrp
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/UNIPROT/goa_uniprot_gcrp.gpi.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/UNIPROT/goa_uniprot_gcrp.gpi.gz
+   source: https://mirror.geneontology.io/goa_uniprot_gcrp.gpi.gz
    entity_type: all
    status: active
    aggregates: goa
@@ -1146,7 +1211,8 @@ datasets:
    dataset: goa_uniprot_gcrp
    submitter: goa
    compression: gzip
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/UNIPROT/goa_uniprot_gcrp.gpa.gz
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/UNIPROT/goa_uniprot_gcrp.gpa.gz
+   source: https://mirror.geneontology.io/goa_uniprot_gcrp.gpa.gz
    entity_type: all
    status: active
    aggregates: goa
@@ -1162,7 +1228,8 @@ datasets:
    type: external2go
    dataset: interpro2go
    submitter: goa
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/external2go/interpro2go
+   source: https://mirror.geneontology.io/interpro2go
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/external2go/interpro2go
    status: active
 
  -
@@ -1173,7 +1240,8 @@ datasets:
    type: external2go
    dataset: pfam2go
    submitter: goa
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/external2go/pfam2go
+   source: https://mirror.geneontology.io/pfam2go
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/external2go/pfam2go
    status: active
 
  -
@@ -1184,7 +1252,8 @@ datasets:
    type: external2go
    dataset: pirsf2go
    submitter: goa
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/external2go/pirsf2go
+   source: https://mirror.geneontology.io/pirsf2go
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/external2go/pirsf2go
    status: active
 
  -
@@ -1195,7 +1264,8 @@ datasets:
    type: external2go
    dataset: prints2go
    submitter: goa
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/external2go/prints2go
+   source: https://mirror.geneontology.io/prints2go
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/external2go/prints2go
    status: active
 
  -
@@ -1206,7 +1276,8 @@ datasets:
    type: external2go
    dataset: prodom2go
    submitter: goa
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/external2go/prodom2go
+   source: https://mirror.geneontology.io/prodom2go
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/external2go/prodom2go
    status: active
 
  -
@@ -1217,7 +1288,8 @@ datasets:
    type: external2go
    dataset: prosite2go
    submitter: goa
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/external2go/prosite2go
+   source: https://mirror.geneontology.io/prosite2go
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/external2go/prosite2go
    status: active
 
  -
@@ -1228,7 +1300,8 @@ datasets:
    type: external2go
    dataset: smart2go
    submitter: goa
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/external2go/smart2go
+   source: https://mirror.geneontology.io/smart2go
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/external2go/smart2go
    status: active
 
  -
@@ -1239,7 +1312,8 @@ datasets:
    type: external2go
    dataset: uniprotkb_kw2go
    submitter: goa
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/external2go/uniprotkb_kw2go
+   source: https://mirror.geneontology.io/uniprotkb_kw2go
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/external2go/uniprotkb_kw2go
    status: active
 
  -
@@ -1250,7 +1324,8 @@ datasets:
    type: external2go
    dataset: uniprotkb_sl2go
    submitter: goa
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/external2go/uniprotkb_sl2go
+   source: https://mirror.geneontology.io/uniprotkb_sl2go
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/external2go/uniprotkb_sl2go
    status: active
 
  -
@@ -1261,7 +1336,8 @@ datasets:
    type: external2go
    dataset: unirule2go
    submitter: goa
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/external2go/unirule2go
+   source: https://mirror.geneontology.io/unirule2go
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/external2go/unirule2go
    status: active
 
  -
@@ -1272,5 +1348,6 @@ datasets:
    type: external2go
    dataset: hamap2go
    submitter: goa
-   source: https://ftp.ebi.ac.uk/pub/databases/GO/goa/external2go/hamap2go
+   source: https://mirror.geneontology.io/hamap2go
+   mirror_of: https://ftp.ebi.ac.uk/pub/databases/GO/goa/external2go/hamap2go
    status: active