Website reputation report

grisha.org

Last checked 4 days ago · Point-in-time assessment

69/100Technical Safety ScoreIndependent technical assessment, not a visitor rating
● Evidence is limited

What is this website?

Public pages were observed on grisha.org, but their subject was not confidently classified. The sampled pages were marked as English-language. Recurring page-metadata topics include gregory trubetskoy, bitcoin, blockchain.

No listed local patterns observedHomepage-only analysis is not a malware clearance. Read the scope and findings below.

69/100Safety Score
70%Evidence Confidence
Trust Radar evidence profile Eight evidence dimensions from zero to one hundred. Exact values surround the chart. Threat Intelligence55 Domain History95 Infrastructure92 Website Security95 Security Hygiene35 Transparency43 Reputation50 Operational Stability85
Trust RadarEight observed factors. Select one to inspect its evidence.

How to read this report

Safety Score evaluates observed signals. Evidence Confidence measures how complete, direct, fresh, and consistent those signals are.

No automated scan can guarantee that a website is safe.

Current report context

What changed since the last scan

  • No earlier report to compare
What this scan could verify · 6 observed, 0 unavailable
DNS observed
Registration lookup observed
Network observed
TLS observed
Website response observed
Website content observed

Unavailable and unperformed checks are not clean results. The detailed evidence below remains the source for each conclusion.

Report an inaccuracy in this report →

Independent evidence brief

What we observed about grisha.org

Updated Oct 16, 2026

The latest scan examined 10 public pages on grisha.org. Website descriptions below come from the site itself. Registration, connection and threat findings were checked separately.

Purpose and visible content

On its homepage, the site says: Notes to self.

Registrar and domain history

Registered on Jun 29, 2002. Registrar: Tucows Domains Inc..

Recorded expiry date: Jun 29, 2027. Registry data can change.

Connection and hosting evidence

The checked homepage returned HTTP 200 in about 1000 ms.

A valid TLS certificate was observed, expiring Jan 5, 2027.

Threat checks and score context

External malware-provider coverage was unavailable. The report does not treat this missing check as a clean result.

Safety Score: 69/100. Evidence Confidence: 70%. These measure different things.

Community reviews of grisha.org

No approved reviews yet ☆☆☆☆☆

Visitor experiences are separate from the independent technical Safety Score.

Visitor opinions remain separate from the technical Safety Score.

Public content profile

Pages reviewed on grisha.org

10 of up to 10 pages

We sampled public pages from this website to understand its subject and contact paths. The titles and short descriptions below come from the website itself. They are not endorsements or independent safety findings.

Gregory TrubetskoyNotes to self. Blockchain Proof-of-Work is a Decentralized Clock - Gregory TrubetskoyThis is an explanation of the key function on Proof-of-Work in the Bitcoin blockchain. It focuses on the one feature of Proof-of-Work that is essential and shows that other feature The Bitcoin Blockchain PostgresSQL Schema - Gregory TrubetskoyIn a previous post I wrote some initial thoughts on storing the blockchain in Postgres. It’s been a couple of months and I’ve made some progress on the import project. This post do Bitcoin Transaction Hash in Pure PostgreSQL - Gregory TrubetskoyUpdate: hacked together this, more details to follow later… In theory, Postgres should be able to verify transactions and blocks, as well as do a lot of other things that are curre Blockchain in PostgreSQL Part 2 - Gregory TrubetskoyUpdate: there is now a better write up of the PostgreSQL schema. This post was rather half-baked as much was still not understood when I wrote it. In a previous post I described a Electricity cost of 1 Bitcoin (Sep 2017) - Gregory TrubetskoyHow much does it cost in electricity to mine a Bitcoin? As of Sep 28, 2017, according to blockchain.info the hashrate is: 9,214,860,125 GH/s. These days it seems that the best mine Bitcoin: USD Value - Gregory TrubetskoyIn part 1 I explained how money has always been a global ledger and Bitcoin is just a different implementation of one. The million dollar question remains, what should Bitcoin be w Bitcoin: Better Ink than Gold? - Gregory TrubetskoyThe fundamental question about Bitcoin is not whether it is sound from the cryptography standpoint. The question is: what is it? Money is Debt Ink To define Bitcoin we need to look Tgres Status - July 4th 2017 - Gregory TrubetskoyIt’s been a while since I’ve written on Tgres, here’s a little update, Independence Day edition. Current Status The current status is that Tgres is looking more and more like a fin Building a Go Web App in 2017 - Gregory TrubetskoyUpdate: part 2 is here, enjoy. And part 3. And part 4. A few weeks ago I started building yet another web-based app, in Go. Being mostly a back-end developer, I don’t have to write

Public page evidence

Topics and keywords observed on grisha.org

12 phrases

These phrases were extracted locally from sampled public page metadata. They are observations, not search-volume or ranking estimates.

gregory trubetskoyTitle10 sampled pages
bitcoinTitle, H1, Meta description6 sampled pages
blockchainTitle, H1, Meta description5 sampled pages
proof ofTitle, H1, Meta description2 sampled pages
postgresqlTitle, H1, Meta description2 sampled pages
is decentralized clockTitle, H12 sampled pages
partTitle, H1, Meta description3 sampled pages
blockchain proofTitle, H12 sampled pages
thatMeta description4 sampled pages
updateMeta description4 sampled pages
bitcoin blockchainTitle, H1, Meta description2 sampled pages
blockchain inTitle, H1, Meta description2 sampled pages

At a glance

Key findings

✓

Report is current

The displayed evidence comes from the published immutable scan.

i

Confidence is separate

Unavailable evidence is shown as missing and never counted as clean.

!

Verify before sensitive actions

Check the exact URL and context before payments, credentials, or downloads.

Fully explainable

Why this score?

Versioned weights
Threat IntelligenceWeight 25%
55/100

Threat providers were unavailable. The neutral uncertainty baseline is not a clean verdict.

Domain HistoryWeight 10%
95/100

Domain registration age and expiry were checked.

InfrastructureWeight 10%
92/100

Observed DNS records and network address were checked.

Website SecurityWeight 15%
95/100

Observed certificate validity and TLS protocol were checked.

Security HygieneWeight 15%
35/100

Observed security header values were checked for basic protective settings. Empty values, disabled HSTS and unrecognized values receive no credit. This is not a complete browser-policy validation.

TransparencyWeight 5%
43/100

Observed site metadata and About page were checked. Publisher-supplied details are not independently verified.

ReputationWeight 5%
50/100

Popularity is weak context, not proof of safety. Unranked sites use a neutral baseline.

Operational StabilityWeight 15%
85/100

Observed HTTP status and final connection scheme were checked.

Server-side analysis

Automated security checks

Local antivirus and phishing checks

ClamAV · homepage HTMLNo signature match in the sampled HTML
Engine version1.5.4
Signature database date (UTC)2026-10-16T06:24:17+00:00
HTML bytes submitted17,464
Phishing.Database · exact hostnameNot listed in this snapshot
Feed downloaded (UTC)2026-10-16T18:00:06+00:00
Hosts in local snapshot386,082

Sampled scripts and pages

Resource analysis incomplete

6 resources checked · 4 script links observed on the homepage. Partial resource coverage.

ClamAV inspects the fetched homepage HTML on our server. New scans also sample up to four linked scripts and two collected internal pages, with size and time limits. Scripts are not executed. Other downloads, private server files and logged-in pages remain outside this check. A signature match needs investigation and can be a false positive. No match is not a whole-site safety guarantee.

Exact hostname lookup uses a downloaded Phishing.Database snapshot. It does not send this domain to an external lookup API or mark sibling subdomains as harmful. Not listed does not mean safe. Snapshot age is download age, not proof that every entry was recently revalidated.

Homepage HTML only · Eight local rule families · local-security-v2

Checks use the fetched page and redirect chain. Scripts are not executed, forms are not submitted, and linked files are not downloaded. This is not a malware clearance.

Page resource inventory

Linked scripts4
Inline scripts1
Embedded frames0
External script hosts1

Counts describe the sampled HTML, not every resource loaded by the browser. External resources are common and are not automatically harmful.

No listed local patterns observed. The limited rule set cannot detect every threat or behavior.

External threat intelligence

Provider coverageNot checked

Local checks do not query external reputation databases. An unavailable check is never a clean result.

Registration

Domain information

Public RDAP observation
Canonical domaingrisha.org
RegistrarTucows Domains Inc.
RegisteredJun 29, 2002
Domain age24 years
ExpiresJun 29, 2027
Registry statusesclient transfer prohibited · client update prohibited
Report statePublished

Infrastructure

Network & hosting

Observed endpoint, not legal location
IP address104.21.23.131
Autonomous systemUnavailable
Network organizationUnavailable
Observed countryUnavailable
CDNCloudflare
Web application firewallNot detected

At a glance

Infrastructure summary

Observed during this scan

A compact view of the connection, DNS and security surface. These observations describe what the scanner could verify at scan time and do not prove ownership or ongoing availability.

HTTP response200 · https://grisha.org/
Endpoint104.21.23.131
NetworkUnavailable
CDN and WAFCloudflare · Not detected
DNS surface11 records · 2 nameservers · 3 mail exchangers
Protection signals0 security headers · 2 technologies · DNSSEC unknown

Page telemetry

Observed page statistics

Safe metadata only

These counters describe the fetched response and sampled HTML. Script counts describe references in the markup, not a complete browser network log. Cookie counts cover observed response headers.

Response size17,464 bytes
HTTP check duration1,000 ms
Cookies observedUnavailable
Script resources4 · 1 external hosts
Frames and sampled checks0 frames · 6 resources checked

Encrypted transport

TLS certificate

Valid when observed
StatusValid when observed
ProtocolTLSv1.3
IssuercountryName=US, organizationName=Google Trust Services, commonName=WE1
Valid fromOct 7, 2026
Valid untilJan 5, 2027
Certificate names*.grisha.org · grisha.org

Resolution

DNS footprint

DNSKEY status unknown

DNSKEY presence does not verify the DNSSEC signature chain. Missing records can mean no record was returned or the lookup was unavailable.

A104.21.23.131TTL —
A172.67.211.74TTL —
AAAA2606:4700:3030::6815:1783TTL —
AAAA2606:4700:3033::ac43:d34aTTL —
NSelsa.ns.cloudflare.comTTL —
NShugh.ns.cloudflare.comTTL —
MX4 route3.mx.cloudflare.netTTL —
MX85 route2.mx.cloudflare.netTTL —
MX96 route1.mx.cloudflare.netTTL —
TXTMS=ms16686765TTL —
TXTv=spf1 ip6:2600:3c03::f03c:93ff:fe92:2566 include:aspmx.googlemail.com include:_spf.mx.cloudflare.net ~allTTL —

DNS observations · no external lookup API

Domain email protection

Exact-host SPF and DMARC observations help the owner investigate email impersonation risks. They are separate from website malware checks and do not change the Safety Score.

SPFPolicy record observed, not fully validated
DMARCNo matching record returned for this exact hostname

What to do next

Review the records with your mail administrator. Inventory legitimate senders and test SPF and DKIM alignment before enforcing a stricter DMARC policy. Fix duplicate records and investigate overly permissive SPF rules.

This bounded check does not send email, probe SMTP, evaluate recursive SPF includes, verify DKIM signatures or apply organizational-domain DMARC inheritance. A missing subdomain record does not prove that no inherited protection exists. A DNS timeout is unknown, not an absent record. A policy record is not proof that messages authenticate successfully.

Responsible disclosure

security.txt

RFC 9116 observation

No readable security.txt file was observed at the standard locations. This is informational and is not evidence of malware.

Browser protections

Security headers

0 observed

Header evidence is unavailable. Missing data is not treated as a clean result or proof of compromise.

Response headers

Cookie protections

Passive observation

No Set-Cookie header was observed on the sampled homepage response. Other pages may set cookies separately.

Detected stack

Technologies

Cloudflare 98% jQuery 3.2.1 82%

Versions are shown only when publicly exposed by the page or response headers. An observed version is not, by itself, proof of a vulnerability.

JavaScript library advisories

JavaScript advisory analysis could not be completed or no eligible script files were sampled. No clean result is implied.

Recommended maintenance checks

jQueryConfirm the observed jQuery version is supported by your application and update it through your normal dependency process.

Structured facts

Website identity & response

Public page metadata
Page titleGregory Trubetskoy
First headingBlockchain Proof-of-Work is a Decentralized Clock
DescriptionNotes to self.
Canonical URLhttps://grisha.org/
Final URLhttps://grisha.org/
HTTP response200 · text/html; charset=utf-8 · 1000 ms
Languageen
Structured typesNone observed
Page page detectedhttps://grisha.org/blog/2018/01/23/explaining-proof-of-work/
missing100% evidence confidence
1100% evidence confidence
en100% evidence confidence
Local headers.hsts present100% evidence confidence
Local headers.csp present100% evidence confidence
1100% evidence confidence
1100% evidence confidence
Local headers.cors credentials with wildcard100% evidence confidence
Local headers.permissions policy present100% evidence confidence
11100% evidence confidence
2100% evidence confidence
3100% evidence confidence
unavailable100% evidence confidence
Dns consistency.cname present100% evidence confidence
4100% evidence confidence

Connection path

Redirect chain

0 recorded hops

No redirect hop was recorded for the sampled homepage.

Premium monitoring

Catch downtime and security changes automatically

Regular checks, availability history, and alert emails are reserved for Premium websites. Free reports remain point-in-time scans and do not create recurring server work.

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Compared with the previous scan

What changed

A comparison will appear after the next completed scan.

Explainable matching

Digital fingerprint

fingerprint-v1
rapid-vector-ring-982

Comparable components help find technically related websites. A match does not prove common ownership.

DnsHashed private comparison value
TechnologiesHashed private comparison value

Material changes only

Change history

Show change history

No meaningful changes recorded yet.

Website icon for grisha.org

Visual evidence

Website screenshot

grisha.orgPreview unavailable

No usable browser image was saved. The website icon is separate from a screenshot and is not visual evidence of the page.

For site owners

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Questions about grisha.org

FAQ

Still have questions? Contact us →
Is grisha.org safe to visit?

The latest Safety Score is 69/100 with 70% Evidence Confidence. This is a point-in-time assessment of observed technical signals, not a guarantee. Check the exact address and avoid entering payment details if anything looks unusual.

Did the scan detect malware on grisha.org?

ClamAV found no signature match in the sampled homepage HTML. External scripts, downloads and private server files were not checked. This is not a whole-site malware clearance.

When was grisha.org registered?

The public registry record shows Jun 29, 2002. Registration details may be privacy-protected or updated later.

Did grisha.org have a valid TLS certificate?

The scanner observed a valid TLS certificate using TLSv1.3. A valid certificate alone does not establish that the site is safe.

Can a paid listing change this website's score?

No. Premium placement and owner-supplied pages are labelled separately. Technical evidence, the Safety Score and moderation decisions remain independent.

Share your experience with grisha.org

Community reviews are moderated and remain separate from the technical Safety Score.

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