App Supply Index Monitor my app
iOS · Chordify BV

Chordify: Songs, Chords, Tuner

Developer URL
https://chordify.net
app-ads.txt
https://chordify.net/app-ads.txt · 200
Checked
Oct 7, 2026
D
52/100

1,216 lines · 756 verified against sellers.json

Findings

Each finding lists the exact lines involved. Findings are automated observations of public files as of Oct 7, 2026. They describe file contents, not the intent or conduct of any company.

warning

DIRECT lines inconsistent with public data

137 −23 pts

The ads.txt specification defines DIRECT as an account the publisher directly controls. For these lines, either the ad system's own sellers.json lists the account as INTERMEDIARY, or the same account is marked DIRECT in the files of 3 or more unrelated companies. Either way, the public data does not support the DIRECT label. Buyers that use DIRECT labels in supply-path decisions may treat these lines differently.

How to fixUse DIRECT only for accounts your company controls. Confirm with each partner whether the account is yours; if it isn't, the specification calls for RESELLER.
Evidence (25 of 137) 
line 20     rubiconproject.com, 20884, DIRECT, 0bfd66d529a55807
             → observed: sellers.json lists the account as INTERMEDIARY; the same account is marked DIRECT by 3 different companies  name in sellers.json: Publift Pty Ltd.  domain in sellers.json: publift.com
line 23     openx.com, 540938618, DIRECT, 6a698e2ec38604c6
             → observed: the same account is marked DIRECT by 3 different companies
line 25     criteo.com, B-056930, DIRECT, 9fac4a4a87c2a44f
             → observed: the same account is marked DIRECT by 3 different companies
line 26     themediagrid.com, U9IDX4, DIRECT, 35d5010d7789b49d
             → observed: sellers.json lists the account as INTERMEDIARY; the same account is marked DIRECT by 3 different companies  name in sellers.json: Publift Pty Ltd  domain in sellers.json: publift.com
line 28     teads.tv, 19340, DIRECT, 15a9c44f6d26cbe1
             → observed: sellers.json lists the account as INTERMEDIARY; the same account is marked DIRECT by 3 different companies  name in sellers.json: Publift Australia  domain in sellers.json: publift.com
line 31     indexexchange.com, 186407, DIRECT
             → observed: the same account is marked DIRECT by 3 different companies
line 33     video.unrulymedia.com, UNRX-PUB-a34a2f68-d5c2-4289-a7e3-5414a99e7e7f, DIRECT
             → observed: the same account is marked DIRECT by 3 different companies
line 37     video.unrulymedia.com, 197409739, DIRECT
             → observed: the same account is marked DIRECT by 3 different companies
line 38     rhythmone.com, 197409739, DIRECT, a670c89d4a324e47
             → observed: the same account is marked DIRECT by 3 different companies
line 40     sovrn.com, 267370, DIRECT, fafdf38b16bf6b2b
             → observed: the same account is marked DIRECT by 3 different companies
line 41     lijit.com, 267370, DIRECT, fafdf38b16bf6b2b
             → observed: sellers.json lists the account as INTERMEDIARY; the same account is marked DIRECT by 3 different companies  name in sellers.json: Publift Pty. Ltd.  domain in sellers.json: publift.com
line 42     lijit.com, 267370-eb, DIRECT, fafdf38b16bf6b2b
             → observed: sellers.json lists the account as INTERMEDIARY; the same account is marked DIRECT by 3 different companies  name in sellers.json: Publift Pty. Ltd. (via Google EB)  domain in sellers.json: google.com
line 62     triplelift.com, 3084, DIRECT, 6c33edb13117fd86
             → observed: sellers.json lists the account as INTERMEDIARY; the same account is marked DIRECT by 3 different companies  name in sellers.json: PubLift  domain in sellers.json: publift.com
line 63     triplelift.com, 3084-EB, DIRECT, 6c33edb13117fd86
             → observed: sellers.json lists the account as INTERMEDIARY; the same account is marked DIRECT by 3 different companies  name in sellers.json: PubLift (via EB Network)  domain in sellers.json: google.com
line 65     uis.mobfox.com, 82221, DIRECT, 5529a3d1f59865be
             → observed: the same account is marked DIRECT by 3 different companies  name in sellers.json: CHEN CHENGDONG  domain in sellers.json: dot.lovecoloringgame.cc
line 77     aps.amazon.com,8b48e249-e9e6-4a52-8b48-396ea93403e8,DIRECT
             → observed: sellers.json lists the account as INTERMEDIARY; the same account is marked DIRECT by 3 different companies  name in sellers.json: Publift Pty Ltd  domain in sellers.json: publift.com
line 119    connectad.io, 152, DIRECT, 85ac85a30c93b3e5
             → observed: sellers.json lists the account as INTERMEDIARY; the same account is marked DIRECT by 3 different companies  name in sellers.json: Publift Pty Ltd  domain in sellers.json: publift.com
line 124    indexexchange.com, 190906, DIRECT, 50b1c356f2c5c8fc
             → observed: the same account is marked DIRECT by 8 different companies
line 125    lijit.com, 244287, DIRECT, fafdf38b16bf6b2b
             → observed: the same account is marked DIRECT by 9 different companies  name in sellers.json: ConnectAd Realtime Inc  domain in sellers.json: connectad.io
line 126    onetag.com, 5d4e109247a89f6, DIRECT
             → observed: the same account is marked DIRECT by 8 different companies
line 133    improvedigital.com, 2030, DIRECT
             → observed: the same account is marked DIRECT by 3 different companies
line 134    inskinmedia.com, 126450, DIRECT, 7c0396763f74a3d5
             → observed: the same account is marked DIRECT by 3 different companies
line 144    rubiconproject.com, 23844, DIRECT, 0bfd66d529a55807
             → observed: sellers.json lists the account as INTERMEDIARY; the same account is marked DIRECT by 5 different companies  name in sellers.json: Monet Engine Inc  domain in sellers.json: amxrtb.com
line 148    amxrtb.com, 105199401, DIRECT
             → observed: sellers.json lists the account as INTERMEDIARY; the same account is marked DIRECT by 3 different companies  name in sellers.json: Publift  domain in sellers.json: publift.com
line 151    kargo.com, 8538, DIRECT
             → observed: sellers.json lists the account as INTERMEDIARY; the same account is marked DIRECT by 3 different companies  name in sellers.json: Publift  domain in sellers.json: publift.com
warning

Seller IDs not listed in the ad system's sellers.json

153 −16 pts

The ad system's current sellers.json doesn't list these accounts, so buyers that validate the chain can't match them. Common causes are closed accounts or former partners.

How to fixAsk each partner whether the account is still active and request their current lines; remove lines for closed accounts.
Evidence (25 of 153) 
line 14     pubmatic.com, 158221, RESELLER, 5d62403b186f2ace
             → sellers_json: https://pubmatic.com/sellers.json
line 33     video.unrulymedia.com, UNRX-PUB-a34a2f68-d5c2-4289-a7e3-5414a99e7e7f, DIRECT
             → sellers_json: https://video.unrulymedia.com/sellers.json
line 37     video.unrulymedia.com, 197409739, DIRECT
             → sellers_json: https://video.unrulymedia.com/sellers.json
line 43     gumgum.com, 11645, RESELLER, ffdef49475d318a9
             → sellers_json: https://gumgum.com/sellers.json
line 48     pubmatic.com, 156700, RESELLER, 5d62403b186f2ace
             → sellers_json: https://pubmatic.com/sellers.json
line 66     xandr.com, 2850, RESELLER, f5ab79cb980f11d1
             → sellers_json: https://xandr.com/sellers.json
line 69     rubiconproject.com, 17494, RESELLER, 0bfd66d529a55807
             → sellers_json: https://rubiconproject.com/sellers.json
line 72     sonobi.com, 71169bd4a5, RESELLER, d1a215d9eb5aee9e
             → sellers_json: https://sonobi.com/sellers.json
line 104    improvedigital.com,2050,RESELLER
             → sellers_json: https://improvedigital.com/sellers.json
line 120    pubmatic.com, 156077, RESELLER, 5d62403b186f2ace
             → sellers_json: https://pubmatic.com/sellers.json
line 126    onetag.com, 5d4e109247a89f6, DIRECT
             → sellers_json: https://onetag.com/sellers.json
line 130    playground.xyz, ca2a160f, DIRECT # publift.com
             → sellers_json: https://playground.xyz/sellers.json
line 133    improvedigital.com, 2030, DIRECT
             → sellers_json: https://improvedigital.com/sellers.json
line 158    rubiconproject.com, 21434, RESELLER, 0bfd66d529a55807 #33Across #tag #ebda
             → sellers_json: https://rubiconproject.com/sellers.json
line 159    rubiconproject.com, 21720, RESELLER, 0bfd66d529a55807 #33Across EU #hb #tag
             → sellers_json: https://rubiconproject.com/sellers.json
line 162    pubmatic.com, 158136, RESELLER, 5d62403b186f2ace #33Across EU #hb #tag
             → sellers_json: https://pubmatic.com/sellers.json
line 210    admanmedia.com, 660, RESELLER
             → sellers_json: https://admanmedia.com/sellers.json
line 217    ucfunnel.com, par-E2B2BB3E89BE87A2F774B768BEED62A2, RESELLER
             → sellers_json: https://ucfunnel.com/sellers.json
line 230    improvedigital.com, 1623, RESELLER
             → sellers_json: https://improvedigital.com/sellers.json
line 233    tremorhub.com, e8okc, RESELLER, 1a4e959a1b50034a
             → sellers_json: https://tremorhub.com/sellers.json
line 237    sonobi.com, cc3858f35e, RESELLER, d1a215d9eb5aee9e
             → sellers_json: https://sonobi.com/sellers.json
line 245    onetag.com, 59aa7be4921bac8, RESELLER
             → sellers_json: https://onetag.com/sellers.json
line 269    video.unrulymedia.com,2169000724,RESELLER
             → sellers_json: https://video.unrulymedia.com/sellers.json
line 271    telaria.com,r3222-wec7r,RESELLER,1a4e959a1b50034a
             → sellers_json: https://www.telaria.com/sellers.json
line 274    admanmedia.com,660,RESELLER
             → sellers_json: https://admanmedia.com/sellers.json
warning

Lines for ad system domains that don't resolve

20 −2 pts

These ad system domains don't resolve (the domain may be retired, merged or misspelled). The lines can't be validated, and if the domain is registered again, its new holder would appear authorized.

How to fixRemove these lines. If the domain is registered again, its new holder would appear authorized by your file.
Evidence (20) 
line 87     districtm.io,100962,RESELLER,3fd707be9c4527c3
             → ad_system: districtm.io
line 257    engagebdr.com, 10181, RESELLER
             → ad_system: engagebdr.com
line 448    spotxchange.com, 230037, RESELLER, 7842df1d2fe2db34
             → ad_system: spotxchange.com
line 484    spotxchange.com, 84294, RESELLER, 7842df1d2fe2db34
             → ad_system: spotxchange.com
line 553    spotxchange.com, 71451, RESELLER
             → ad_system: spotxchange.com
line 581    spotxchange.com, 108933, RESELLER, 7842df1d2fe2db34
             → ad_system: spotxchange.com
line 627    spotxchange.com, 304237, RESELLER, 7842df1d2fe2db34
             → ad_system: spotxchange.com
line 676    spotxchange.com,202100,RESELLER,7842df1d2fe2db34
             → ad_system: spotxchange.com
line 707    spotxchange.com,230037,RESELLER,7842df1d2fe2db34
             → ad_system: spotxchange.com
line 847    spotxchange.com,249286,DIRECT,7842df1d2fe2db34
             → ad_system: spotxchange.com
line 849    districtm.io,101760,DIRECT,3fd707be9c4527c3
             → ad_system: districtm.io
line 860    aolcloud.net,4687,DIRECT
             → ad_system: aolcloud.net
line 880    spotxchange.com,108933,RESELLER,7842df1d2fe2db34
             → ad_system: spotxchange.com
line 908    districtm.io,100600,RESELLER
             → ad_system: districtm.io
line 947    spotxchange.com,225721,RESELLER
             → ad_system: spotxchange.com
line 969    spotxchange.com,304237,RESELLER,7842df1d2fe2db34
             → ad_system: spotxchange.com
line 1031   spotxchange.com,178357,RESELLER,7842df1d2fe2db34
             → ad_system: spotxchange.com
line 1105   spotxchange.com,108706, RESELLER, 7842df1d2fe2db34
             → ad_system: spotxchange.com
line 1161   districtm.io, 100600, RESELLER
             → ad_system: districtm.io
line 1166   spotxchange.com, 211156, RESELLER, 7842df1d2fe2db34
             → ad_system: spotxchange.com
warning

Malformed lines

1 −1 pts

Lines that buyers' crawlers will ignore.

How to fixFix the format: <ad system domain>, <seller id>, DIRECT|RESELLER[, <cert authority id>].
Evidence (1) 
line 1326   Ads.txt: Media.net, 8CUVP89TE, DIRECT
             → reason: invalid ad system domain
info

Duplicate lines

196 −3 pts

Harmless but a sign of copy-paste maintenance.

How to fixRemove duplicates; keep one copy of each line.
Evidence (25 of 196) 
ad_system: indexexchange.com  seller_id: 182257  relationship: RESELLER
ad_system: appnexus.com  seller_id: 6849  relationship: RESELLER
ad_system: rubiconproject.com  seller_id: 15268  relationship: RESELLER
ad_system: gumgum.com  seller_id: 11645  relationship: RESELLER
ad_system: openx.com  seller_id: 538959099  relationship: RESELLER
ad_system: openx.com  seller_id: 539924617  relationship: RESELLER
ad_system: pubmatic.com  seller_id: 137711  relationship: RESELLER
ad_system: pubmatic.com  seller_id: 156212  relationship: RESELLER
ad_system: pubmatic.com  seller_id: 156700  relationship: RESELLER
ad_system: rubiconproject.com  seller_id: 17960  relationship: RESELLER
ad_system: appnexus.com  seller_id: 1019  relationship: RESELLER
ad_system: rubiconproject.com  seller_id: 23434  relationship: RESELLER
ad_system: pubmatic.com  seller_id: 157897  relationship: RESELLER
ad_system: appnexus.com  seller_id: 2758  relationship: RESELLER
ad_system: contextweb.com  seller_id: 558355  relationship: RESELLER
ad_system: emxdgt.com  seller_id: 1284  relationship: RESELLER
ad_system: openx.com  seller_id: 537149485  relationship: RESELLER
ad_system: admanmedia.com  seller_id: 799  relationship: RESELLER
ad_system: pubmatic.com  seller_id: 156451  relationship: RESELLER
ad_system: inmobi.com  seller_id: a5e661acdc384e91a79a58eb3418e99f  relationship: RESELLER
ad_system: rubiconproject.com  seller_id: 18020  relationship: RESELLER
ad_system: pubmatic.com  seller_id: 157150  relationship: RESELLER
ad_system: openx.com  seller_id: 540191398  relationship: RESELLER
ad_system: appnexus.com  seller_id: 1908  relationship: RESELLER
ad_system: appnexus.com  seller_id: 3663  relationship: RESELLER
info

DIRECT accounts registered to another domain

31 −3 pts

Allowed when the domain belongs to the same company; add OWNERDOMAIN to make that explicit. Otherwise these accounts may belong to someone else.

How to fixIf the account is yours under another domain, declare it with OWNERDOMAIN=<that domain>; otherwise mark it RESELLER.
Evidence (25 of 31) 
line 422    brightcom.com, 20605, DIRECT
             → domain in sellers.json: cedargamestudio.com  name in sellers.json: Cedar Game Studio
line 431    audienciad.com, 206052, DIRECT
             → domain in sellers.json: publift.com  name in sellers.json: Publift
line 437    onomagic.com, 206051, DIRECT
             → domain in sellers.json: publift.com  name in sellers.json: Publift
line 441    limpid.tv, 920605, DIRECT
             → domain in sellers.json: learnings.ai  name in sellers.json: learnings.ai
line 443    getmediamx.com, 1220605, DIRECT
             → domain in sellers.json: publift.com  name in sellers.json: Publift
line 445    whildey.com, 206055, DIRECT
             → domain in sellers.json: learnings.ai  name in sellers.json: Oakever Games
line 470    adform.com, 2708, DIRECT
             → domain in sellers.json: onomagic.com  name in sellers.json: Onomagic
line 525    google.com, pub-1483540515826582, DIRECT, f08c47fec0942fa0
             → domain in sellers.json: greatestdivesites.com  name in sellers.json: Lars Hemel
line 526    google.com, pub-5512841121466740, DIRECT, f08c47fec0942fa0
             → domain in sellers.json: greatestdivesites.com  name in sellers.json: Lars Hemel
line 548    themediagrid.com, ANCZPV, DIRECT, 35d5010d7789b49d
             → domain in sellers.json: yieldit.nl  name in sellers.json: YieldIt B.V.
line 600    google.com, pub-4482194929243016, DIRECT, f08c47fec0942fa0
             → domain in sellers.json: planetnine.com  name in sellers.json: Planet Nine Media B.V.
line 660    richaudience.com,quxufDBTNs,DIRECT
             → domain in sellers.json: adpone.com  name in sellers.json: Adpone
line 703    adyoulike.com,87c21b10199c379ba530b3522d1c7d95,DIRECT
             → domain in sellers.json: refinery89.com  name in sellers.json: Refinery89 [HB]
line 719    aps.amazon.com,d02f0482-a50f-427c-ac01-9856371f1f6b,DIRECT
             → domain in sellers.json: refinery89.com  name in sellers.json: Refinery89 B.V.
line 722    lijit.com,276814,DIRECT,fafdf38b16bf6b2b
             → domain in sellers.json: refinery89.com  name in sellers.json: Refinery89
line 729    smartadserver.com,3305,DIRECT,060d053dcf45cbf3
             → domain in sellers.json: refinery89.com  name in sellers.json: Refinery89
line 753    themediagrid.com,RH359P,DIRECT,35d5010d7789b49d
             → domain in sellers.json: refinery89.com  name in sellers.json: Refinery89 B.V.
line 834    seedtag.com,5c93693d50e6db0900511b16,DIRECT
             → domain in sellers.json: refinery89.com  name in sellers.json: Refinery 89 B.V
line 835    seedtag.com,612f58798516c10800f5eee9,DIRECT
             → domain in sellers.json: refinery89.com  name in sellers.json: Refinery 89 B.V
line 836    seedtag.com,623dbb3b24c5f9080060e27b,DIRECT
             → domain in sellers.json: refinery89.com  name in sellers.json: Refinery 89 B.V
line 837    seedtag.com,612f55d01ff1f3070006473b,DIRECT
             → domain in sellers.json: refinery89.com  name in sellers.json: Refinery 89 B.V
line 838    seedtag.com,619294b125e5e608008aed85,DIRECT
             → domain in sellers.json: refinery89.com  name in sellers.json: Refinery 89 B.V
line 839    seedtag.com,617c0f50ee8fe1070000635f,DIRECT
             → domain in sellers.json: refinery89.com  name in sellers.json: Refinery 89 B.V
line 840    seedtag.com,623c7c56084fbc0800b0901e,DIRECT
             → domain in sellers.json: refinery89.com  name in sellers.json: Refinery 89 B.V
line 841    seedtag.com,623c7b25ce956c07002f18f0,DIRECT
             → domain in sellers.json: refinery89.com  name in sellers.json: Refinery 89 B.V
info

Ad systems without a public sellers.json

263

The ad system doesn't publish a readable sellers.json, so nobody can verify these lines. That's the ad system's gap, not the app's, so no points are deducted.

How to fixAsk the partner to publish sellers.json; until then buyers can't verify that path.
Evidence (25 of 263) 
line 16     appnexus.com, 9623, RESELLER
             → sellers_json: HTTP 403
line 22     openx.com, 540717835, RESELLER, 6a698e2ec38604c6
             → sellers_json: HTTP 403
line 23     openx.com, 540938618, DIRECT, 6a698e2ec38604c6
             → sellers_json: HTTP 403
line 25     criteo.com, B-056930, DIRECT, 9fac4a4a87c2a44f
             → sellers_json: HTTP 403
line 35     appnexus.com, 6849, RESELLER
             → sellers_json: HTTP 403
line 38     rhythmone.com, 197409739, DIRECT, a670c89d4a324e47
             → sellers_json: HTTP 403
line 40     sovrn.com, 267370, DIRECT, fafdf38b16bf6b2b
             → sellers_json: HTTP 403
line 44     openx.com, 538959099, RESELLER, 6a698e2ec38604c6
             → sellers_json: HTTP 403
line 45     openx.com, 539924617, RESELLER, 6a698e2ec38604c6
             → sellers_json: HTTP 403
line 50     appnexus.com, 1019, RESELLER, f5ab79cb980f11d1
             → sellers_json: HTTP 403
line 55     appnexus.com,2758,RESELLER,f5ab79cb980f11d1
             → sellers_json: HTTP 403
line 58     openx.com,537149485,RESELLER,6a698e2ec38604c6
             → sellers_json: HTTP 403
line 67     openx.com, 539249210, RESELLER, 6a698e2ec38604c6
             → sellers_json: HTTP 403
line 70     xad.com,589, RESELLER, 81cbf0a75a5e0e9a
             → sellers_json: HTTP 403
line 73     loopme.com,11446,RESELLER,6c8d5f95897a5a3b
             → sellers_json: HTTP 403
line 83     openx.com,540191398,RESELLER,6a698e2ec38604c6
             → sellers_json: HTTP 403
line 84     appnexus.com,1908,RESELLER,f5ab79cb980f11d1
             → sellers_json: HTTP 403
line 89     appnexus.com,3663,RESELLER,f5ab79cb980f11d1
             → sellers_json: HTTP 403
line 90     rhythmone.com,1654642120,RESELLER,a670c89d4a324e47
             → sellers_json: HTTP 403
line 96     appnexus.com,1356,RESELLER,f5ab79cb980f11d1
             → sellers_json: HTTP 403
line 101    sovrn.com,375328,RESELLER,fafdf38b16bf6b2b
             → sellers_json: HTTP 403
line 108    appnexus.com,9623,DIRECT,f5ab79cb980f11d1
             → sellers_json: HTTP 403
line 114    openx.com, 557939709, RESELLER, 6a698e2ec38604c6
             → sellers_json: HTTP 403
line 115    openx.com,557939709,DIRECT,6a698e2ec38604c6
             → sellers_json: HTTP 403
line 121    openx.com, 537145117, RESELLER, 6a698e2ec38604c6
             → sellers_json: HTTP 403

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