testing-preview network does not create certificates

[jpraynaud]

Issue

The testing-preview network is not creating certificates since epoch 246.

To do

• Re-genesis the network for signing back at next epoch
• Understand why the network does not sign
• Fix the problem

[jpraynaud]

Analysis

After investigation, it appears that there is a discrepancy between the verification key recorded in the aggregator and the secret key stored in one of the signer: this prevents this signer to contribute to signatures of the epoch. Given the full protocol parameters used in the testing-preview network, the quorum is not reached (which is normal behavior) and the aggregator does not produce certificates for the epoch.

Details

The monitoring database gives an history of all the successful signer registrations that took place for the mithril-signer-1 running with pool id pool1vapqexnsx6hvc588yyysxpjecf3k43hcr5mvhmstutuvy085xpa. Here is an extract for the epoch 244 which is used to sign at epoch 246:

| 664      | 2023-06-26T00:03:59.080898085+00:00 | HTTP::signer_register | register_signer | {"headers": {"signer-node-version":"0.2.53+8be00a9","epoch":"244"}, "content": {"party_id":"pool1vapqexnsx6hvc588yyysxpjecf3k43hcr5mvhmstutuvy085xpa","verification_key":"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","verification_key_signature":"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","operational_certificate":"5b5b5b3135342c39332c3135342c3230372c3133312c3232302c32332c3139322c34302c36322c322c3132322c34392c34362c31362c3131362c3130312c3234322c33342c3135382c3137392c3134372c3139302c3138332c34312c3134352c3230372c3230362c3234392c3135342c362c32355d2c312c3132332c5b34342c3138382c39392c3138392c3133392c38322c33362c35382c34382c3131362c3130392c3136322c3230392c34382c34372c3131352c3234352c3139362c3231332c3132302c3133332c31352c3130372c3132332c322c3131372c3134362c34312c3234352c3136352c38332c3134322c3234362c36312c39342c3138332c3139352c3133372c31332c3134382c3230372c3134392c31392c3235312c38312c3134372c3130342c3134392c3232332c3134392c34342c33352c362c39332c352c39362c35362c31342c3231302c3234312c3137342c36362c32312c31355d5d2c5b33302c3138312c32302c37382c33392c3232332c352c3133372c3134312c3138392c372c3132372c34352c3232372c3230362c3135372c39352c3131352c36312c3132382c3135392c3135362c34332c3132372c302c34302c3134332c3138332c3233302c32352c39312c3137305d5d","kes_period":39,"stake":9497432569}}                                                                                                                                                             |
| 667      | 2023-06-26T10:05:57.569752966+00:00 | HTTP::signer_register | register_signer | {"headers": {"signer-node-version":"0.2.54+6faba60","epoch":"244"}, "content": {"party_id":"pool1vapqexnsx6hvc588yyysxpjecf3k43hcr5mvhmstutuvy085xpa","verification_key":"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","verification_key_signature":"7b227369676d61223a7b227369676d61223a7b227369676d61223a7b227369676d61223a7b227369676d61223a7b227369676d61223a5b3132312c32322c3130302c34322c38332c3136302c3230382c3134302c3234362c3137372c3235352c37302c37342c352c3231302c3131392c39332c32302c3132322c352c3234322c3231372c3133352c3134382c36332c3235332c312c37382c3231382c3233392c3133332c38372c36392c3133312c3231352c392c37382c33332c3235352c3138392c35382c3138302c38312c3137382c33392c37372c302c3230312c39312c38382c3130352c3131342c3230342c3131392c3131322c3130372c3233372c37312c31322c3135362c38312c35372c352c31325d2c226c68735f706b223a5b3132352c38392c37372c3231312c3135332c3234302c3234332c352c3131322c3130332c37312c32362c3136362c39322c35362c302c37332c39312c3133302c37352c3130332c33322c3138352c3234372c37302c3137372c3231352c342c36372c3136382c3137362c38355d2c227268735f706b223a5b36392c3136342c3231322c32372c3235322c3138352c3137372c3231312c3232302c342c33322c3139302c3232382c34392c3230362c36372c3232362c31392c3134382c32302c3130392c38352c3139362c3232392c3233342c34342c33312c36312c32312c32372c3131322c3233305d7d2c226c68735f706b223a5b3133372c3138392c3234302c31332c39312c3132382c3130382c3235302c3135382c39312c3139392c37362c33382c3137342c38352c38302c3235342c36302c33302c32392c3233352c34302c3230312c37332c39352c39392c32322c37302c3138312c3135372c332c3233365d2c227268735f706b223a5b31392c36332c3231322c38362c3233322c3232322c3230322c39372c35322c33372c3133392c302c3134332c3133392c3132302c32352c31322c3134382c3134352c3130332c3234372c3137332c38352c3133332c3132312c3232352c3133302c3130382c3131372c32322c302c3133345d7d2c226c68735f706b223a5b3230382c3231332c3134392c38392c3134362c3137322c302c39372c3139382c3135382c3132392c3131332c37362c3138362c3138362c39372c31312c3233322c36352c3135352c372c3133332c3231322c33302c3134342c3134392c3136352c3230352c362c39392c3134322c3136365d2c227268735f706b223a5b31392c3130392c3135312c32332c3136302c39352c37382c302c31382c3233382c3135312c3135332c3133312c3130382c3136382c3134362c31352c3135392c3133382c3134332c392c3132312c3137382c3232392c33392c36352c3133352c3133332c3132372c3131382c34362c31365d7d2c226c68735f706b223a5b302c38302c362c3234342c38322c3131342c36322c3137372c39362c3234332c33362c35352c3138382c3231342c3131302c33322c3231302c32332c31352c3137322c3232362c3235302c34312c35372c3230322c3234312c3234322c31362c3135312c3132392c35382c3134335d2c227268735f706b223a5b3232332c3136322c3137302c3132342c3139302c37382c3136352c35332c38342c33392c33352c3138362c3230382c38352c3137312c32342c3230352c3136342c31352c3230352c34392c3137382c38322c37322c36322c3138382c3131362c38392c3130372c3235312c3230312c3231355d7d2c226c68735f706b223a5b3131372c3233392c3233372c3230322c3137352c3139382c3231372c3230382c32382c3235332c37362c39362c3135342c3231352c3235332c34302c372c36352c3230372c3135372c3135352c37312c38392c3139342c3139342c32392c3134362c3137352c3133372c3137322c3130352c39315d2c227268735f706b223a5b37322c34372c3232332c36302c37302c3130382c34312c39362c36342c3230392c3132342c34312c3233382c3231392c37352c37372c3231392c38372c35332c3139392c352c3235322c38362c3230312c3131342c3235332c34382c3231312c3232342c3132332c32332c3231355d7d2c226c68735f706b223a5b3233382c3231382c38362c3138332c3234362c36362c3235302c3133382c3230302c3138342c36382c32362c31332c322c3131392c3137362c3234312c3134382c35312c34332c3232342c332c36392c31302c37312c3136392c36332c3131372c37312c38332c3130312c3136395d2c227268735f706b223a5b3131392c37382c34322c3235352c3139382c32352c3130332c32342c3235312c3131332c3137302c3134302c3139362c3133312c38392c35342c31392c37372c32382c3135352c36352c3139362c33312c3138322c3235322c39342c31312c3130322c34312c332c3135362c38355d7d","operational_certificate":"5b5b5b3135342c39332c3135342c3230372c3133312c3232302c32332c3139322c34302c36322c322c3132322c34392c34362c31362c3131362c3130312c3234322c33342c3135382c3137392c3134372c3139302c3138332c34312c3134352c3230372c3230362c3234392c3135342c362c32355d2c312c3132332c5b34342c3138382c39392c3138392c3133392c38322c33362c35382c34382c3131362c3130392c3136322c3230392c34382c34372c3131352c3234352c3139362c3231332c3132302c3133332c31352c3130372c3132332c322c3131372c3134362c34312c3234352c3136352c38332c3134322c3234362c36312c39342c3138332c3139352c3133372c31332c3134382c3230372c3134392c31392c3235312c38312c3134372c3130342c3134392c3232332c3134392c34342c33352c362c39332c352c39362c35362c31342c3231302c3234312c3137342c36362c32312c31355d5d2c5b33302c3138312c32302c37382c33392c3232332c352c3133372c3134312c3138392c372c3132372c34352c3232372c3230362c3135372c39352c3131352c36312c3132382c3135392c3135362c34332c3132372c302c34302c3134332c3138332c3233302c32352c39312c3137305d5d","kes_period":39,"stake":9497432569}}                                                                                                                                             |
| 668      | 2023-06-26T13:08:06.632889588+00:00 | HTTP::signer_register | register_signer | {"headers": {"signer-node-version":"0.2.54+a259add","epoch":"244"}, "content": 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                                                                        |
| 671      | 2023-06-26T14:40:18.067552412+00:00 | HTTP::signer_register | register_signer | {"headers": {"signer-node-version":"0.2.55+2aee4c5","epoch":"244"}, "content": {"party_id":"pool1vapqexnsx6hvc588yyysxpjecf3k43hcr5mvhmstutuvy085xpa","verification_key":"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","verification_key_signature":"7b227369676d61223a7b227369676d61223a7b227369676d61223a7b227369676d61223a7b227369676d61223a7b227369676d61223a5b36372c3132362c362c39392c31302c38332c3131322c33352c3232372c3139372c3230392c3135312c3233302c38352c33392c3137332c3233322c3234312c3231372c3138352c3231382c31352c35312c3130342c36322c31362c3137342c36322c34302c362c32302c39352c3233352c362c3234322c3139352c3230332c312c37302c3133382c39342c31392c34382c3232372c35362c312c332c3235302c3234362c39372c38332c3231342c3133302c3132322c31342c3234302c35312c3137322c3132362c3233392c3136392c35392c3232302c375d2c226c68735f706b223a5b39332c3133302c32312c31352c3231312c38322c3139362c3230392c37362c3135392c38332c3135382c3135342c3130372c36352c3136382c36342c31392c3232382c38322c3233392c3135342c3135322c3235352c32372c3133352c33352c3136322c3130372c3138362c3137332c3231365d2c227268735f706b223a5b37312c3137352c3233322c3131352c3235322c3235322c3133302c3139322c33382c3135372c3234362c3136352c3138362c31372c3233392c3234322c39392c3136372c3134352c3235352c3134312c3132342c3130392c342c3138342c3231302c35382c3130372c3139382c39362c3136382c3137355d7d2c226c68735f706b223a5b36332c3232342c32312c3231352c38312c3233372c3131342c3235302c37392c35362c3131362c372c3133312c3133382c3130372c3230372c34342c31332c32382c37392c3231352c39372c3139302c3233302c3131322c3131362c38322c3136372c36382c38322c3230302c325d2c227268735f706b223a5b3139342c37392c3233312c3133362c3136372c3137392c3136362c3137332c3136342c3230332c3130332c3234342c3139332c3131342c3134392c3134302c39342c35392c32372c34342c3233362c3232392c3231352c3235302c3137352c38372c39312c38322c3234362c31362c3130382c3138335d7d2c226c68735f706b223a5b3135372c3139342c382c3133372c35332c3138302c3131382c3233352c3135322c3235352c3138332c3138322c3138302c3136352c3232302c37362c3134372c3130372c38362c3136382c3134352c3130362c3133332c3130342c3133382c3235352c3139302c3136312c3230352c38342c3235352c3130315d2c227268735f706b223a5b3139332c3235352c3232382c31392c38342c39382c31332c33342c3231352c3137312c33352c37312c3133342c32342c3234332c36322c3136392c3134342c3137342c3133362c3231312c39332c38302c32312c37322c3139352c3137302c3230382c3135372c3133332c34392c3232335d7d2c226c68735f706b223a5b302c38302c362c3234342c38322c3131342c36322c3137372c39362c3234332c33362c35352c3138382c3231342c3131302c33322c3231302c32332c31352c3137322c3232362c3235302c34312c35372c3230322c3234312c3234322c31362c3135312c3132392c35382c3134335d2c227268735f706b223a5b3232332c3136322c3137302c3132342c3139302c37382c3136352c35332c38342c33392c33352c3138362c3230382c38352c3137312c32342c3230352c3136342c31352c3230352c34392c3137382c38322c37322c36322c3138382c3131362c38392c3130372c3235312c3230312c3231355d7d2c226c68735f706b223a5b3131372c3233392c3233372c3230322c3137352c3139382c3231372c3230382c32382c3235332c37362c39362c3135342c3231352c3235332c34302c372c36352c3230372c3135372c3135352c37312c38392c3139342c3139342c32392c3134362c3137352c3133372c3137322c3130352c39315d2c227268735f706b223a5b37322c34372c3232332c36302c37302c3130382c34312c39362c36342c3230392c3132342c34312c3233382c3231392c37352c37372c3231392c38372c35332c3139392c352c3235322c38362c3230312c3131342c3235332c34382c3231312c3232342c3132332c32332c3231355d7d2c226c68735f706b223a5b3233382c3231382c38362c3138332c3234362c36362c3235302c3133382c3230302c3138342c36382c32362c31332c322c3131392c3137362c3234312c3134382c35312c34332c3232342c332c36392c31302c37312c3136392c36332c3131372c37312c38332c3130312c3136395d2c227268735f706b223a5b3131392c37382c34322c3235352c3139382c32352c3130332c32342c3235312c3131332c3137302c3134302c3139362c3133312c38392c35342c3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     

And here is the pending certificate that is used by the signer to check that its verification is registered in the protocol (before sending some individual signatures):

{
    "beacon": {
        "network": "preview",
        "epoch": 246,
        "immutable_file_number": 4916
    },
    "entity_type": {
        "MithrilStakeDistribution": 246
    },
    "protocol": {
        "k": 2422,
        "m": 20973,
        "phi_f": 0.2
    },
    "next_protocol": {
        "k": 2422,
        "m": 20973,
        "phi_f": 0.2
    },
    "signers": [
        {
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            "operational_certificate": "5b5b5b3138332c33342c3231362c34362c3232372c3235312c37342c3130312c31352c3233332c3234392c34322c312c37372c37322c3234382c3137392c32312c3137332c3131332c3131382c3139382c36322c3133352c34352c38382c3138372c3233332c34302c37322c31362c36365d2c312c3132332c5b31362c3136392c3134312c3138332c32322c3137342c3131312c33322c36342c35322c3234392c36382c3230322c33352c3130362c332c38362c3230352c37382c3230302c3138362c39342c3139372c3232382c37392c3137352c32392c31342c3132382c36332c35392c3139382c36322c3233302c34362c34312c38342c39382c3131392c3134352c32392c3132312c33352c3139372c3132382c3137322c302c3135342c392c31332c32362c3138332c3138362c3138362c33312c3234392c3133322c3232392c3235332c3134332c3130322c3235342c3231322c315d5d2c5b3234312c32372c31332c34342c3131342c37382c3138392c3234392c3135302c3135302c35332c3134342c3233362c3135312c38382c3134302c3132382c3136322c36302c3232382c38382c3131312c392c3134342c3233322c38332c39342c3231302c3135362c3136382c33352c3234325d5d",
            "kes_period": 40
        },
        {
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            "verification_key_signature": "7b227369676d61223a7b227369676d61223a7b227369676d61223a7b227369676d61223a7b227369676d61223a7b227369676d61223a5b3130322c31332c3134352c3138322c3131352c392c35312c3230342c31302c35382c3134342c3138362c36312c3230382c34372c302c3134352c3133332c34342c3135342c38342c38302c3232382c31312c33302c392c3130392c3231372c3137322c3230322c3131372c37372c3231322c34342c3131362c3136322c3139352c3231362c31342c34342c31322c36362c32352c3135352c3232372c3137322c3232372c35332c32302c3131342c32302c3134352c3234342c3139382c35302c3134302c3136302c372c3131392c39312c33372c3137382c3130392c31315d2c226c68735f706b223a5b39332c3133302c32312c31352c3231312c38322c3139362c3230392c37362c3135392c38332c3135382c3135342c3130372c36352c3136382c36342c31392c3232382c38322c3233392c3135342c3135322c3235352c32372c3133352c33352c3136322c3130372c3138362c3137332c3231365d2c227268735f706b223a5b37312c3137352c3233322c3131352c3235322c3235322c3133302c3139322c33382c3135372c3234362c3136352c3138362c31372c3233392c3234322c39392c3136372c3134352c3235352c3134312c3132342c3130392c342c3138342c3231302c35382c3130372c3139382c39362c3136382c3137355d7d2c226c68735f706b223a5b36332c3232342c32312c3231352c38312c3233372c3131342c3235302c37392c35362c3131362c372c3133312c3133382c3130372c3230372c34342c31332c32382c37392c3231352c39372c3139302c3233302c3131322c3131362c38322c3136372c36382c38322c3230302c325d2c227268735f706b223a5b3139342c37392c3233312c3133362c3136372c3137392c3136362c3137332c3136342c3230332c3130332c3234342c3139332c3131342c3134392c3134302c39342c35392c32372c34342c3233362c3232392c3231352c3235302c3137352c38372c39312c38322c3234362c31362c3130382c3138335d7d2c226c68735f706b223a5b3135372c3139342c382c3133372c35332c3138302c3131382c3233352c3135322c3235352c3138332c3138322c3138302c3136352c3232302c37362c3134372c3130372c38362c3136382c3134352c3130362c3133332c3130342c3133382c3235352c3139302c3136312c3230352c38342c3235352c3130315d2c227268735f706b223a5b3139332c3235352c3232382c31392c38342c39382c31332c33342c3231352c3137312c33352c37312c3133342c32342c3234332c36322c3136392c3134342c3137342c3133362c3231312c39332c38302c32312c37322c3139352c3137302c3230382c3135372c3133332c34392c3232335d7d2c226c68735f706b223a5b302c38302c362c3234342c38322c3131342c36322c3137372c39362c3234332c33362c35352c3138382c3231342c3131302c33322c3231302c32332c31352c3137322c3232362c3235302c34312c35372c3230322c3234312c3234322c31362c3135312c3132392c35382c3134335d2c227268735f706b223a5b3232332c3136322c3137302c3132342c3139302c37382c3136352c35332c38342c33392c33352c3138362c3230382c38352c3137312c32342c3230352c3136342c31352c3230352c34392c3137382c38322c37322c36322c3138382c3131362c38392c3130372c3235312c3230312c3231355d7d2c226c68735f706b223a5b3131372c3233392c3233372c3230322c3137352c3139382c3231372c3230382c32382c3235332c37362c39362c3135342c3231352c3235332c34302c372c36352c3230372c3135372c3135352c37312c38392c3139342c3139342c32392c3134362c3137352c3133372c3137322c3130352c39315d2c227268735f706b223a5b37322c34372c3232332c36302c37302c3130382c34312c39362c36342c3230392c3132342c34312c3233382c3231392c37352c37372c3231392c38372c35332c3139392c352c3235322c38362c3230312c3131342c3235332c34382c3231312c3232342c3132332c32332c3231355d7d2c226c68735f706b223a5b3233382c3231382c38362c3138332c3234362c36362c3235302c3133382c3230302c3138342c36382c32362c31332c322c3131392c3137362c3234312c3134382c35312c34332c3232342c332c36392c31302c37312c3136392c36332c3131372c37312c38332c3130312c3136395d2c227268735f706b223a5b3131392c37382c34322c3235352c3139382c32352c3130332c32342c3235312c3131332c3137302c3134302c3139362c3133312c38392c35342c31392c37372c32382c3135352c36352c3139362c33312c3138322c3235322c39342c31312c3130322c34312c332c3135362c38355d7d",
            "operational_certificate": "5b5b5b3135342c39332c3135342c3230372c3133312c3232302c32332c3139322c34302c36322c322c3132322c34392c34362c31362c3131362c3130312c3234322c33342c3135382c3137392c3134372c3139302c3138332c34312c3134352c3230372c3230362c3234392c3135342c362c32355d2c312c3132332c5b34342c3138382c39392c3138392c3133392c38322c33362c35382c34382c3131362c3130392c3136322c3230392c34382c34372c3131352c3234352c3139362c3231332c3132302c3133332c31352c3130372c3132332c322c3131372c3134362c34312c3234352c3136352c38332c3134322c3234362c36312c39342c3138332c3139352c3133372c31332c3134382c3230372c3134392c31392c3235312c38312c3134372c3130342c3134392c3232332c3134392c34342c33352c362c39332c352c39362c35362c31342c3231302c3234312c3137342c36362c32312c31355d5d2c5b33302c3138312c32302c37382c33392c3232332c352c3133372c3134312c3138392c372c3132372c34352c3232372c3230362c3135372c39352c3131352c36312c3132382c3135392c3135362c34332c3132372c302c34302c3134332c3138332c3233302c32352c39312c3137305d5d",
            "kes_period": 40
        }
    ]
}

We can see that the verification key advertised in the pending certificate is the one that has been recorded in event #668 of the monitoring, whereas the one that is registered in the signer is the last one that was sent to the aggregator (and should have been successfully saved by the aggregator) i.e. event #671

Question

Why did the aggregator act as if it had registered verification key from event #671 when it kept a record of the verification key sent previously at event #668?

[jpraynaud]

The problem is apparently fixed by PR #1028.
We will keep monitoring and verify that it does not reproduce.