Currently, two sources are checked for new information about Play Integrity:

Google Play Integrity Incidents Feed
Android attestation status (newly revoked keyboxes)

Revocations done after 11/1/24 will be posted here.

As of 2025, as soon as a key is revoked, you will lose DEVICE integrity in most cases.
Also, Google has automated systems to detect if a key is widely shared, which leads to "soft-bans" where some Google services reject it or the Play Integrity STRONG label is removed.
Keys posted online have a very short shelf life as a result.

My advice: avoid buying one unless it makes business sense for you to do so. It's risky and expensive.

Play Integrity Incidents
New incident: https://status.play.google.com/incidents/ibhy2Rit9o3v7NvNC3AS
Updates:
[SERVICE_INFORMATION] (10/23/24, 12:04 PM EST): An ongoing Android security incident may increase user support requests due to some devices not passing Play Integrity API integrity checks. The Android Security team and device partner are working to fix the issue.
[SERVICE_INFORMATION] (10/25/24, 5:18 AM EST): More information about the Android security incident can be found at https://apvi.issues.chromium.org/issues/375543080.
[SERVICE_INFORMATION] (11/1/24, 6:39 AM EST): Starting today, an increased number of devices are no longer returning the optional MEETS_STRONG_INTEGRITY device integrity verdict. This is working as intended. No further updates are expected.

Play Integrity Incidents
Updated incident: https://status.play.google.com/incidents/ibhy2Rit9o3v7NvNC3AS
Updates:
[SERVICE_INFORMATION] (10/23/24, 12:04 PM EST): An ongoing Android security incident may increase user support requests due to some devices not passing Play Integrity API integrity checks. The Android Security team and device partner are working to fix the issue.
[SERVICE_INFORMATION] (10/25/24, 5:18 AM EST): More information about the Android security incident can be found at https://apvi.issues.chromium.org/issues/375543080.
[AVAILABLE] (11/1/24, 6:39 AM EST): Starting today, an increased number of devices are no longer returning the optional MEETS_STRONG_INTEGRITY device integrity verdict. This is working as intended. No further updates are expected.

KeyBox revocations
10226047386288991724, REVOKED, KEY_COMPROMISE
12668387747158417143, REVOKED, KEY_COMPROMISE
13248733163135609423, REVOKED, KEY_COMPROMISE
13348091602249849805, REVOKED, KEY_COMPROMISE
1350561415378564440, REVOKED, KEY_COMPROMISE
13928929639211242692, REVOKED, KEY_COMPROMISE
14640938648747537821, REVOKED, KEY_COMPROMISE
15771272847795181104, REVOKED, KEY_COMPROMISE
1585354944530892645, REVOKED, KEY_COMPROMISE
1668086897009702941, REVOKED, KEY_COMPROMISE
17611167200590548471, REVOKED, KEY_COMPROMISE
17815072069125310254, REVOKED, KEY_COMPROMISE
199e5dcaf566a0e3ef9066f305e756ca, REVOKED, KEY_COMPROMISE
208f5008c39038a7105aa3d2ccfa8f76, REVOKED, KEY_COMPROMISE
2333138298448348224, REVOKED, KEY_COMPROMISE
24f7bff38ae38534a66dd409a15018d3, REVOKED, KEY_COMPROMISE
263c56c9661db1056077c41533e9273a, REVOKED, KEY_COMPROMISE
4556706436870875570, REVOKED, KEY_COMPROMISE
4787674494226554952, REVOKED, KEY_COMPROMISE
497cef32a39b3ab59a5e4f540b5c6a04, REVOKED, KEY_COMPROMISE
5499413214094383533, REVOKED, KEY_COMPROMISE
5700cd8388894789b7bf56117617ac8b, REVOKED, KEY_COMPROMISE
69435364fc9442d7abb66f9ba15cbd12, REVOKED, KEY_COMPROMISE
7495153833538638193, REVOKED, KEY_COMPROMISE
74b6e1978a2d6b06046a334c4e5aa27c, REVOKED, KEY_COMPROMISE
7833460656650575616, REVOKED, KEY_COMPROMISE
899cc95b431b9ed6f4e5c04d223f1edd, REVOKED, KEY_COMPROMISE
90b4d749dc46b40ef62bb1901953e112, REVOKED, KEY_COMPROMISE
9714381576908752953, REVOKED, KEY_COMPROMISE
b46f082b679a78cd1ddb33727d62fb22, REVOKED, KEY_COMPROMISE
cf408d495722b0ac413071aff33e5827, REVOKED, KEY_COMPROMISE
d11d764d395b58eab0e4254911981f6c, REVOKED, KEY_COMPROMISE
f1970b5cb77a6e7fc5a529b1da625738, REVOKED, KEY_COMPROMISE

KeyBox revocations
5bf2410405189c2281ac6aece3298f2f, REVOKED, KEY_COMPROMISE
da5707ca6065a48a74a1dfc1d6785e39, REVOKED, KEY_COMPROMISE

KeyBox revocations
73dee6ce1a083d3cd6098e6235e8c45e, REVOKED, KEY_COMPROMISE
d608859f730a11acc35eb186b0d25504, REVOKED, KEY_COMPROMISE

KeyBox revocations
15544873590417730886, REVOKED, KEY_COMPROMISE

KeyBox revocations
16465707362485555038, REVOKED, KEY_COMPROMISE

Play Integrity Incidents
New incident: https://status.play.google.com/incidents/tpKCTQGiukcRMMkAM2Dh
Updates:
[SERVICE_DISRUPTION] (1/29/25, 1:49 PM EST): We're investigating reports of an issue with Play Integrity API. We will provide more information shortly.

Play Integrity Incidents
Updated incident: https://status.play.google.com/incidents/tpKCTQGiukcRMMkAM2Dh
Updates:
[SERVICE_DISRUPTION] (1/29/25, 1:49 PM EST): We're investigating reports of an issue with Play Integrity API. We will provide more information shortly.
[AVAILABLE] (1/29/25, 4:16 PM EST): The problem with Play Integrity API has been resolved. We apologize for the inconvenience and thank you for your patience and continued support.

KeyBox revocations
6c114792264f0c67ef37da51241091a1, REVOKED, KEY_COMPROMISE
6e5998d0c8e7a361c662166c8c5f8105, REVOKED, KEY_COMPROMISE

KeyBox revocations
1635f112314b435298d4a1801809b5b6, REVOKED, KEY_COMPROMISE

5c5e3ff9fa765760ec579ab6328008b9, REVOKED, KEY_COMPROMISE (KeyBoxMan leak from 1/29)

KeyBox revocations
17775704036672684559, REVOKED, KEY_COMPROMISE (KeyBoxMan leak from 2/10)

2985899474217541918, REVOKED, KEY_COMPROMISE

KeyBox revocations
87829f49654c1fa220a027c31c90b037, REVOKED, KEY_COMPROMISE
da4a4c5614d0da5aae0253c73e775cbb, REVOKED, KEY_COMPROMISE

KeyBox revocations
8335962468401124113, REVOKED, KEY_COMPROMISE

775085751717851895, REVOKED, KEY_COMPROMISE
(KeyBoxMax leak from 2/16)