App Supply Index Monitor my app
Android · Musescore Limited

MuseScore: Music Chords & Tabs

Developer URL
https://musescore.com/groups/musescore-android
app-ads.txt
https://musescore.com/app-ads.txt · 200
Checked
Oct 7, 2026
B
76/100

320 lines · 190 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

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

32 −13 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 32) 
line 4      smaato.com, 1100049169, DIRECT, 07bcf65f187117b4
             → sellers_json: https://smaato.com/sellers.json
line 33     sonobi.com, 83729e979b, RESELLER
             → sellers_json: https://sonobi.com/sellers.json
line 35     google.com, pub-8655001720710332, RESELLER, f08c47fec0942fa0
             → sellers_json: https://realtimebidding.google.com/sellers.json
line 59     Media.net, 8PR6YK195, RESELLER
             → sellers_json: https://media.net/sellers.json
line 60     google.com, pub-5912840019437959, RESELLER, f08c47fec0942fa0
             → sellers_json: https://realtimebidding.google.com/sellers.json
line 61     yieldmo.com, 2724005447462757095, RESELLER
             → sellers_json: https://yieldmo.com/sellers.json
line 80     improvedigital.com, 2050, RESELLER
             → sellers_json: https://improvedigital.com/sellers.json
line 96     connectad.io, 455, RESELLER, 85ac85a30c93b3e5
             → sellers_json: https://connectad.io/sellers.json
line 99     opera.com, pub12058951686464, RESELLER, 55a0c5fd61378de3
             → sellers_json: https://opera.com/sellers.json
line 123    pubmatic.com, 159668, RESELLER, 5d62403b186f2ace
             → sellers_json: https://pubmatic.com/sellers.json
line 127    rubiconproject.com, 19724, RESELLER, 0bfd66d529a55807
             → sellers_json: https://rubiconproject.com/sellers.json
line 129    e-planning.net, 949b688810cb7439, RESELLER, c1ba615865ed87b2
             → sellers_json: https://e-planning.net/sellers.json
line 186    yieldmo.com, 2240559316355155321, RESELLER
             → sellers_json: https://yieldmo.com/sellers.json
line 189    iqzone.com, IQ161, RESELLER
             → sellers_json: https://iqzone.com/sellers.json
line 191    improvedigital.com, 2073, RESELLER
             → sellers_json: https://improvedigital.com/sellers.json
line 274    improvedigital.com, 2821, RESELLER
             → sellers_json: https://improvedigital.com/sellers.json
line 327    tremorhub.com, mb9eo-oqsbf, RESELLER, 1a4e959a1b50034a
             → sellers_json: https://tremorhub.com/sellers.json
line 329    smartclip.net, 7649, RESELLER
             → sellers_json: https://smartclip.net/sellers.json
line 331    improvedigital.com, 1065, RESELLER
             → sellers_json: https://improvedigital.com/sellers.json
line 333    telaria.com, mb9eo-oqsbf, RESELLER, 1a4e959a1b50034a
             → sellers_json: https://www.telaria.com/sellers.json
line 337    pubmatic.com, 158811, RESELLER, 5d62403b186f2ace
             → sellers_json: https://pubmatic.com/sellers.json
line 339    rubiconproject.com, 20132, RESELLER, 0bfd66d529a55807
             → sellers_json: https://rubiconproject.com/sellers.json
line 340    telaria.com, mb9eo-e04lh, RESELLER, 1a4e959a1b50034a
             → sellers_json: https://www.telaria.com/sellers.json
line 341    tremorhub.com, mb9eo-e04lh, RESELLER, 1a4e959a1b50034a
             → sellers_json: https://tremorhub.com/sellers.json
line 347    supply.colossusssp.com, 290, RESELLER, 6c5b49d96ec1b458
             → sellers_json: https://supply.colossusssp.com/sellers.json
warning

DIRECT lines inconsistent with public data

5 −3 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 (5) 
line 137    onetag.com, 75804861b76a852, DIRECT
             → observed: sellers.json lists the account as INTERMEDIARY  name in sellers.json: Blockthrough Inc.  domain in sellers.json: blockthrough.com
line 217    aps.amazon.com, 48266a61-b3d9-4cb7-b172-553abc6a42a4, DIRECT
             → observed: the same account is marked DIRECT by 11 different companies  name in sellers.json: Online Media Solutions Ltd  domain in sellers.json: onlinemediasolutions.com
line 254    The-ozone-project.com, OZONEPRS0001, DIRECT
             → observed: sellers.json lists the account as INTERMEDIARY  name in sellers.json: M.D. PRIMIS TECHNOLOGIES LTD  domain in sellers.json: primis.tech
line 284    pubmatic.com, 157158, DIRECT, 5d62403b186f2ace
             → observed: sellers.json lists the account as INTERMEDIARY  name in sellers.json: Generation Premium (UltimateGuitar.com) (via EB)  domain in sellers.json: google.com
line 306    rubiconproject.com, 18734, DIRECT, 0bfd66d529a55807
             → observed: sellers.json lists the account as INTERMEDIARY  name in sellers.json: Google  domain in sellers.json: google.com
warning

Lines for ad system domains that don't resolve

8 −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 (8) 
line 32     districtm.io, 100600, RESELLER
             → ad_system: districtm.io
line 109    districtm.io, 100962, RESELLER
             → ad_system: districtm.io
line 111    yldbt.com, 5b522cc167f6b300b89dc6d3, RESELLER, cd184cb30abaabb5
             → ad_system: yldbt.com
line 312    spotxchange.com, 220321, RESELLER, 7842df1d2fe2db34
             → ad_system: spotxchange.com
line 315    spotxchange.com, 84294, RESELLER, 7842df1d2fe2db34
             → ad_system: spotxchange.com
line 321    districtm.io, 101359, RESELLER
             → ad_system: districtm.io
line 381    spotxchange.com, 266250, DIRECT, 7842df1d2fe2db34
             → ad_system: spotxchange.com
line 394    districtm.io, 100885, RESELLER
             → ad_system: districtm.io
info

DIRECT accounts registered to another domain

16 −5 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 (16) 
line 84     nativo.com, 5762, DIRECT, 59521ca7cc5e9fee
             → domain in sellers.json: ultimate-guitar.com/  name in sellers.json: Grand Play Media
line 91     onetag.com, 76de395880b7308, DIRECT
             → domain in sellers.json: grand play media llc  name in sellers.json: Grand Play Media LLC
line 102    smartadserver.com, 5642, DIRECT, 060d053dcf45cbf3
             → domain in sellers.json: ultimate-guitar.com  name in sellers.json: Grand Play Media Ultimate Guitar
line 116    betweendigital.com, 43834, DIRECT
             → domain in sellers.json: ultimate-guitar.com  name in sellers.json: Grand Play Media LLC
line 132    blockthrough.com, 5651113476882432, DIRECT
             → domain in sellers.json: ultimateguitar.com  name in sellers.json: Grand Play Media
line 143    sharethrough.com, 5642, DIRECT, d53b998a7bd4ecd2
             → domain in sellers.json: ultimate-guitar.com  name in sellers.json: Grand Play Media Ultimate Guitar
line 166    Media.net, 8CU53KQ8B, DIRECT
             → domain in sellers.json: ultimate-guitar.com  name in sellers.json: Ultimate Guitar
line 202    onlinemediasolutions.com, 21219, DIRECT, b3868b187e4b6402
             → domain in sellers.json: musecore.com  name in sellers.json: musecore.com
line 212    audienciad.com, 212192, DIRECT
             → domain in sellers.json: musecore.com  name in sellers.json: musecore.com
line 221    getmediamx.com, 1221219, DIRECT
             → domain in sellers.json: musecore.com  name in sellers.json: musecore.com
line 230    onomagic.com, 212191, DIRECT
             → domain in sellers.json: musecore.com  name in sellers.json: musecore.com
line 261    the-ozone-project.com, OZONEMUS0001, DIRECT
             → domain in sellers.json: mu.se  name in sellers.json: Muse Hub
line 287    pubmatic.com, 158767, DIRECT, 5d62403b186f2ace
             → domain in sellers.json: generationpremium.com  name in sellers.json: Generation Premium INC
line 296    risecodes.com, 63a2de6e59cc1900018d95e6, DIRECT
             → domain in sellers.json: ultimate-guitar.com  name in sellers.json: Ultimate Guitar
line 322    sekindo.com, 17119, DIRECT, b6b21d256ef43532
             → domain in sellers.json: ultimate-guitar.com  name in sellers.json: Grand Play Media, LLC
line 354    primis.tech, 17119, DIRECT, b6b21d256ef43532
             → domain in sellers.json: ultimate-guitar.com  name in sellers.json: Grand Play Media, LLC
info

Duplicate lines

10 −1 pts

Harmless but a sign of copy-paste maintenance.

How to fixRemove duplicates; keep one copy of each line.
Evidence (10) 
ad_system: aps.amazon.com  seller_id: fa84ab71-a984-4d4b-9cab-fa3b3879ff93  relationship: DIRECT
ad_system: vidoomy.com  seller_id: 9148331  relationship: RESELLER
ad_system: google.com  seller_id: pub-1111561740470733  relationship: DIRECT
ad_system: openx.com  seller_id: 540208558  relationship: DIRECT
ad_system: rubiconproject.com  seller_id: 10278  relationship: RESELLER
ad_system: smartadserver.com  seller_id: 3436  relationship: RESELLER
ad_system: appnexus.com  seller_id: 9316  relationship: RESELLER
ad_system: pubmatic.com  seller_id: 156084  relationship: RESELLER
ad_system: adform.com  seller_id: 2078  relationship: RESELLER
ad_system: supply.colossusssp.com  seller_id: 290  relationship: RESELLER
info

Ad systems without a public sellers.json

72

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 72) 
line 12     sovrn.com, 375328, RESELLER, fafdf38b16bf6b2b
             → sellers_json: HTTP 403
line 14     openx.com, 538959099, RESELLER, 6a698e2ec38604c6
             → sellers_json: HTTP 403
line 19     adcolony.com, c490f6e7399a25d6, RESELLER, 1ad675c9de6b5176
             → sellers_json: HTML or login page instead of JSON
line 21     loopme.com, 11227, RESELLER, 6c8d5f95897a5a3b
             → sellers_json: HTTP 403
line 23     appnexus.com, 9569, RESELLER
             → sellers_json: HTTP 403
line 26     appnexus.com, 19824, RESELLER
             → sellers_json: HTTP 403
line 28     rhythmone.com, 3341072718, RESELLER, a670c89d4a324e47
             → sellers_json: HTTP 403
line 34     openx.com, 537100188, RESELLER, 6a698e2ec38604c6
             → sellers_json: HTTP 403
line 41     openx.com, 540401713, RESELLER, 6a698e2ec38604c6
             → sellers_json: HTTP 403
line 42     advertising.com, 8603, RESELLER
             → sellers_json: HTTP 403
line 44     rhythmone.com, 905992537, RESELLER, a670c89d4a324e47
             → sellers_json: HTTP 403
line 46     appnexus.com, 3153, RESELLER, f5ab79cb980f11d1
             → sellers_json: HTTP 403
line 47     appnexus.com, 11924, RESELLER, f5ab79cb980f11d1
             → sellers_json: HTTP 403
line 55     appnexus.com, 9847, RESELLER
             → sellers_json: HTTP 403
line 56     openx.com, 543731411, RESELLER, 6a698e2ec38604c6
             → sellers_json: HTTP 403
line 67     rhythmone.com, 1654642120, RESELLER
             → sellers_json: HTTP 403
line 70     appnexus.com, 3663, RESELLER, f5ab79cb980f11d1
             → sellers_json: HTTP 403
line 78     loopme.com, 11487, DIRECT, 6c8d5f95897a5a3b
             → sellers_json: HTTP 403
line 100    appnexus.com, 1356, RESELLER, f5ab79cb980f11d1
             → sellers_json: HTTP 403
line 108    coxmt.com, 2000068024302, RESELLER
             → sellers_json: HTML or login page instead of JSON
line 113    openx.com, 540191398, RESELLER, 6a698e2ec38604c6
             → sellers_json: HTTP 403
line 117    appnexus.com, 13817, RESELLER, f5ab79cb980f11d1
             → sellers_json: HTTP 403
line 124    sovrn.com, 273644, RESELLER, fafdf38b16bf6b2b
             → sellers_json: HTTP 403
line 136    appnexus.com, 6979, RESELLER
             → sellers_json: HTTP 403
line 140    coxmt.com, 2000068032002, DIRECT
             → sellers_json: HTML or login page instead of JSON

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