Public Accountability Chain

September 10, 2023 | Omaha, Nebraska

Matthew X. Johnson, 27, from Omaha, Nebraska - undefined on 10 September 2023

Victim Info

NameMatthew X. Johnson
RaceUnknown
Age27
Gendermale

Details

Additional Evidence

NameMatthew X. Johnson
Date2023-09-10
Manner Of DeathPolice Shooting
Armed Withgun
Age27
Gendermale
Race
Race Source
CityOmaha
StateNE
Was Mental Illness RelatedFalse
Threat Typepoint
Flee Statusnot
Body CameraTrue
Location Precisionintersection
Agency Ids158

Source

Source ID: 9504 - Washington Post

BEACON Data

Mainchain details

The BEACON hash was timestamped at Thu, 11 Jan 2024 12:00:38 GMT and successfully submitted to Mainchain. The BEACON Timestamp ID is 126592. Submitted in Mainchain Tx 54CCDB3A1659854E4D22D1B8DEA3B84A5444B4614E2541F60B08D74F8DD77E3D, at block height 8732670

Transaction details

Tx 54CCDB3A1659854E4D22D1B8DEA3B84A5444B4614E2541F60B08D74F8DD77E3D
Sent from: und1hf4jjflctvxcfxh5mc47yqvugwcugm9xzevszk
Public Key Type: /cosmos.crypto.secp256k1.PubKey
Public Key: A675rrH9WWpxIibCwaEs18WyVdsrByOXRqVay8/b8hGh
Signature: 5zb4QadLChrpGYW1iaaRtcRTlnRyDVBQs4gmHp0NFJQfyVvhlVVK6QHN8HsrwCmFy1qpNf7K5OV8+xAs/V3QpA==
Raw Tx data: {"tx":{"body":{"messages":[{"@type":"/mainchain.beacon.v1.MsgRecordBeaconTimestamp","beacon_id":"4","hash":"b88a45e771eb29c804c473fdad60c0af3a5ce333395f0b0ab3059a909d28bf33","submit_time":"1704974438","owner":"und1hf4jjflctvxcfxh5mc47yqvugwcugm9xzevszk"}],"memo":"","timeout_height":"0","extension_options":[],"non_critical_extension_options":[]},"auth_info":{"signer_infos":[{"public_key":{"@type":"/cosmos.crypto.secp256k1.PubKey","key":"A675rrH9WWpxIibCwaEs18WyVdsrByOXRqVay8/b8hGh"},"mode_info":{"single":{"mode":"SIGN_MODE_DIRECT"}},"sequence":"126627"}],"fee":{"amount":[{"denom":"nund","amount":"1000000000"}],"gas_limit":"250000","payer":"","granter":""},"tip":null},"signatures":["5zb4QadLChrpGYW1iaaRtcRTlnRyDVBQs4gmHp0NFJQfyVvhlVVK6QHN8HsrwCmFy1qpNf7K5OV8+xAs/V3QpA=="]},"tx_response":{"height":"8732670","txhash":"54CCDB3A1659854E4D22D1B8DEA3B84A5444B4614E2541F60B08D74F8DD77E3D","codespace":"","code":0,"data":"123F0A352F6D61696E636861696E2E626561636F6E2E76312E4D73675265636F7264426561636F6E54696D657374616D70526573706F6E7365120608041080DD07","raw_log":"[{\"msg_index\":0,\"events\":[{\"type\":\"message\",\"attributes\":[{\"key\":\"action\",\"value\":\"/mainchain.beacon.v1.MsgRecordBeaconTimestamp\"},{\"key\":\"module\",\"value\":\"beacon\"}]},{\"type\":\"record_beacon_timestamp\",\"attributes\":[{\"key\":\"beacon_id\",\"value\":\"4\"},{\"key\":\"beacon_timestamp_id\",\"value\":\"126592\"},{\"key\":\"beacon_timestamp_id_pruned\",\"value\":\"76592\"},{\"key\":\"beacon_timestamp_hash\",\"value\":\"b88a45e771eb29c804c473fdad60c0af3a5ce333395f0b0ab3059a909d28bf33\"},{\"key\":\"beacon_timestamp_submit_time\",\"value\":\"1704974438\"},{\"key\":\"beacon_owner\",\"value\":\"und1hf4jjflctvxcfxh5mc47yqvugwcugm9xzevszk\"}]}]}]","logs":[{"msg_index":0,"log":"","events":[{"type":"message","attributes":[{"key":"action","value":"/mainchain.beacon.v1.MsgRecordBeaconTimestamp"},{"key":"module","value":"beacon"}]},{"type":"record_beacon_timestamp","attributes":[{"key":"beacon_id","value":"4"},{"key":"beacon_timestamp_id","value":"126592"},{"key":"beacon_timestamp_id_pruned","value":"76592"},{"key":"beacon_timestamp_hash","value":"b88a45e771eb29c804c473fdad60c0af3a5ce333395f0b0ab3059a909d28bf33"},{"key":"beacon_timestamp_submit_time","value":"1704974438"},{"key":"beacon_owner","value":"und1hf4jjflctvxcfxh5mc47yqvugwcugm9xzevszk"}]}]}],"info":"","gas_wanted":"250000","gas_used":"133650","tx":{"@type":"/cosmos.tx.v1beta1.Tx","body":{"messages":[{"@type":"/mainchain.beacon.v1.MsgRecordBeaconTimestamp","beacon_id":"4","hash":"b88a45e771eb29c804c473fdad60c0af3a5ce333395f0b0ab3059a909d28bf33","submit_time":"1704974438","owner":"und1hf4jjflctvxcfxh5mc47yqvugwcugm9xzevszk"}],"memo":"","timeout_height":"0","extension_options":[],"non_critical_extension_options":[]},"auth_info":{"signer_infos":[{"public_key":{"@type":"/cosmos.crypto.secp256k1.PubKey","key":"A675rrH9WWpxIibCwaEs18WyVdsrByOXRqVay8/b8hGh"},"mode_info":{"single":{"mode":"SIGN_MODE_DIRECT"}},"sequence":"126627"}],"fee":{"amount":[{"denom":"nund","amount":"1000000000"}],"gas_limit":"250000","payer":"","granter":""},"tip":null},"signatures":["5zb4QadLChrpGYW1iaaRtcRTlnRyDVBQs4gmHp0NFJQfyVvhlVVK6QHN8HsrwCmFy1qpNf7K5OV8+xAs/V3QpA=="]},"timestamp":"2024-01-11T12:00:36Z","events":[{"type":"coin_spent","attributes":[{"key":"spender","value":"und1nwt6chnk0efe8ngwa5y63egmdumht6arlvluh3","index":true},{"key":"amount","value":"1000000000nund","index":true}]},{"type":"coin_received","attributes":[{"key":"receiver","value":"und1hf4jjflctvxcfxh5mc47yqvugwcugm9xzevszk","index":true},{"key":"amount","value":"1000000000nund","index":true}]},{"type":"und_unlocked","attributes":[{"key":"purchaser","value":"und1hf4jjflctvxcfxh5mc47yqvugwcugm9xzevszk","index":true},{"key":"amount","value":"1000000000nund","index":true}]},{"type":"coin_spent","attributes":[{"key":"spender","value":"und1hf4jjflctvxcfxh5mc47yqvugwcugm9xzevszk","index":true},{"key":"amount","value":"1000000000nund","index":true}]},{"type":"coin_received","attributes":[{"key":"receiver","value":"und17xpfvakm2amg962yls6f84z3kell8c5lhuyfdm","index":true},{"key":"amount","value":"1000000000nund","index":true}]},{"type":"transfer","attributes":[{"key":"recipient","value":"und17xpfvakm2amg962yls6f84z3kell8c5lhuyfdm","index":true},{"key":"sender","value":"und1hf4jjflctvxcfxh5mc47yqvugwcugm9xzevszk","index":true},{"key":"amount","value":"1000000000nund","index":true}]},{"type":"message","attributes":[{"key":"sender","value":"und1hf4jjflctvxcfxh5mc47yqvugwcugm9xzevszk","index":true}]},{"type":"tx","attributes":[{"key":"fee","value":"1000000000nund","index":true},{"key":"fee_payer","value":"und1hf4jjflctvxcfxh5mc47yqvugwcugm9xzevszk","index":true}]},{"type":"tx","attributes":[{"key":"acc_seq","value":"und1hf4jjflctvxcfxh5mc47yqvugwcugm9xzevszk/126627","index":true}]},{"type":"tx","attributes":[{"key":"signature","value":"5zb4QadLChrpGYW1iaaRtcRTlnRyDVBQs4gmHp0NFJQfyVvhlVVK6QHN8HsrwCmFy1qpNf7K5OV8+xAs/V3QpA==","index":true}]},{"type":"message","attributes":[{"key":"action","value":"/mainchain.beacon.v1.MsgRecordBeaconTimestamp","index":true}]},{"type":"message","attributes":[{"key":"module","value":"beacon","index":true}]},{"type":"record_beacon_timestamp","attributes":[{"key":"beacon_id","value":"4","index":true},{"key":"beacon_timestamp_id","value":"126592","index":true},{"key":"beacon_timestamp_id_pruned","value":"76592","index":true},{"key":"beacon_timestamp_hash","value":"b88a45e771eb29c804c473fdad60c0af3a5ce333395f0b0ab3059a909d28bf33","index":true},{"key":"beacon_timestamp_submit_time","value":"1704974438","index":true},{"key":"beacon_owner","value":"und1hf4jjflctvxcfxh5mc47yqvugwcugm9xzevszk","index":true}]}]}}

Hash Comparison

Hash stored in database: b88a45e771eb29c804c473fdad60c0af3a5ce333395f0b0ab3059a909d28bf33

Hash from Mainchain Tx: b88a45e771eb29c804c473fdad60c0af3a5ce333395f0b0ab3059a909d28bf33

Dynamically generated hash: b88a45e771eb29c804c473fdad60c0af3a5ce333395f0b0ab3059a909d28bf33

Hashes Match?

YES

How is the comparison calculated?

The hash stored in the database is used as the identifier for this report, and can be seen in the URL. The hash from the Mainchain Tx is the hash sent to and stored on Mainchain. Finally, the "generated hash" is generated each time this page is loaded, using the same data used for the hash submitted to Mainchain.

Raw data used to generate the hash, using the Node.js crypto.createHash('sha256') algorithm: {"content":"","evidenceAdditional":{"type":"text","data":{"name":"Matthew X. Johnson","date":"2023-09-10","manner_of_death":"Police Shooting","armed_with":"gun","age":"27","gender":"male","race":"","race_source":"","city":"Omaha","state":"NE","was_mental_illness_related":"False","threat_type":"point","flee_status":"not","body_camera":"True","location_precision":"intersection","agency_ids":"158"}},"evidenceLinks":[],"locationCity":"Omaha","locationCountry":"US","locationHasGeo":true,"locationLat":41.24878375853206,"locationLong":-96.06987094283548,"locationState":"Nebraska","locationStateCode":"NE","month":9,"source":"WashingtonPost","sourceAdditionalData":[],"sourceDatetime":1694304000,"sourceId":"9504","sourceRawData":"{\"id\":\"9504\",\"date\":\"2023-09-10\",\"threat_type\":\"point\",\"flee_status\":\"not\",\"armed_with\":\"gun\",\"city\":\"Omaha\",\"county\":\"Douglas\",\"state\":\"NE\",\"latitude\":\"41.24878375853206\",\"longitude\":\"-96.06987094283548\",\"location_precision\":\"intersection\",\"name\":\"Matthew X. Johnson\",\"age\":\"27\",\"gender\":\"male\",\"race\":\"\",\"race_source\":\"\",\"was_mental_illness_related\":\"False\",\"body_camera\":\"True\",\"agency_ids\":\"158\"}","sourceRawDataFormat":"json","sourceUrl":"https://raw.githubusercontent.com/washingtonpost/data-police-shootings/master/v2/fatal-police-shootings-data.csv","title":"Matthew X. Johnson, 27, from Omaha, Nebraska - undefined on 10 September 2023","updateHistory":[],"victimAge":27,"victimArmed":"Gun","victimGender":"male","victimName":"Matthew X. Johnson","victimRace":"Unknown","year":2023}