Stacks Technologies B.V.

stacks.ai · NL · Issued by DigiCert

AI-powered technology solutions and services provider

★★★ 5/10TechnologyEstablished tech company with AI focus, recognized in European tech sector

Expires in about 1 yearVMCRegisteredView PrecertASN.1 crt.sh crt.sh Precert

Certificate Summary

Fingerprint (SHA-256)a136f25fa59069d1d49a4e865a2b8ed769bffbf010ac654970859f1a3d2fdbd0

Serial Number0d:ba:70:64:e7:de:20:46:f3:d1:db:24:fb:33:80:12

Issued2026-02-20

Expires2027-03-23

Intermediate CADigiCert

SubjectStacks Technologies B.V., NL

SANsstacks.ai

CT LogGorgon (DigiCert) #31793 · 2026-02-26 00:01 UTC (18 days ago)

Certificate Lint

3 errors21 passed

3 errors1 notice21 passed

MCR (Mark Certificate Requirements)3 fails

✓

EKU must contain BIMI OIDMCR §7.1.2.7 ↗

e_bimi_eku_present

✓

EKU must contain only BIMI OIDMCR §7.1.2.7 ↗

e_bimi_eku_single

✓

Name Constraints must not be presentMCR §7.1.2.7 ↗

e_bimi_no_name_constraints

✗

Key Usage must include digitalSignatureerrorMCR §7.1.2.7 ↗

Key Usage extension is missing

e_bimi_key_usage

✓

Validity period must not exceed 825 daysMCR §6.3.2 ↗

e_bimi_validity_period

✓

SCT List extension must be presentMCR §7.1.2.7 ↗

e_bimi_sct_present

✓

Pilot ID extension must not be presentMCR §7.1.2.7 ↗

e_bimi_pilot_id_absent

✓

BIMI General Policy OID must be presentMCR §7.1.6.4 ↗

e_bimi_general_policy

✓

CPS URL must be present in certificate policiesMCR §7.1.6.4 ↗

e_bimi_cps_url_present

✓

Mark type must be present and validMCR §7.1.4.2.2 ↗

e_bimi_mark_type_valid

✗

Trademark Office must be present for Registered MarkerrorMCR §7.1.4.2 ↗

Missing Trademark Office (OID 1.3.6.1.4.1.53087.1.2) in subject DN

e_bimi_mark_type_dn_trademark_office

✓

Trademark Country must be present for Registered MarkMCR §7.1.4.2 ↗

e_bimi_mark_type_dn_trademark_country

✓

Trademark Registration ID must be present for Registered MarkMCR §7.1.4.2 ↗

e_bimi_mark_type_dn_trademark_registration_id

✓

Logotype extension must be presentMCR §7.1.2.7 ↗

e_bimi_logotype_present

✓

Logotype must contain data: URIMCR §7.1.2.7 ↗

e_bimi_logotype_data_uri

✓

SVG must be gzip-compressedMCR §7.1.2.7 ↗

e_bimi_svg_compressed

✗

SVG must conform to SVG Tiny PSerrorMCR §7.1.2.7 ↗

viewBox is not square: 600x540 (BIMI requires 1:1 aspect ratio); Missing recommended <desc> element for accessibility

e_bimi_svg_tiny_ps

✓

RSA key must be at least 2048 bitsMCR §6.1.5 ↗

w_bimi_rsa_key_size

—

ECDSA key must use P-256 or P-384MCR §6.1.5 ↗

w_bimi_ecdsa_curve

✓

Signature hash should be SHA-256 or strongerMCR §6.1.5 ↗

w_bimi_sig_hash

RFC 5280 (X.509)

✓

Certificate must not be a CARFC 5280 §4.2.1.9 ↗

e_bimi_basic_constraints

—

Key Usage extension must be criticalRFC 5280 §4.2.1.3 ↗

e_bimi_key_usage_critical

CA/Browser Forum

✓

Serial number should contain at least 64 bits of entropyCABF ↗

w_bimi_serial_entropy

✓

CA-specific policy OID should be presentCABF ↗

Found DigiCert policy OID: 2.16.840.1.114412.0.2.5

w_bimi_ca_policy_oid

RFC 3709 (Logotype)1 fail

✓

Logotype extension must not be criticalRFC 3709 §2.1 ↗

e_bimi_logotype_not_critical

✓

Logotype must contain a hashRFC 3709 §2.1 ↗

e_bimi_logotype_hash_present

✗

Logotype hash should use SHA-256noticeRFC 3709 §2.1 ↗

Logotype uses SHA-1 hash; SHA-256 recommended for stronger integrity

n_bimi_logotype_hash_sha256

Embedded Logo

SVG Hashb11785e3cb607453878f1f2b11ae66b6c701efb530231f4a31dc72b42e24e3fd

Revocation Status

No OCSP or CRL endpoints found in this certificate's extensions.

Certificate Details

Serial Number: 0d:ba:70:64:e7:de:20:46:f3:d1:db:24:fb:33:80:12

Issuer:

commonName: DigiCert Verified Mark Europe RSA4096 SHA256 2023 CA1

organizationName: DigiCert

Validity:

Not Before: Fri, 20 Feb 2026 00:00:00 UTC

Not After: Tue, 23 Mar 2027 23:59:59 UTC

Subject:

commonName: Stacks Technologies B.V.

organizationName: Stacks Technologies B.V.

countryName: NL

stateOrProvinceName: Noord-Holland

localityName: Amsterdam

BIMI Trademark Country: EM

BIMI Trademark ID: 019134874

BIMI Mark Type: Registered Mark

Jurisdiction Country: NL

Business Category: Private Organization

Serial Number: 93518528

Street Address: Nieuwezijds Voorburgwal 162

Subject Alternative Names:

DNS:stacks.ai

X509v3 Extensions:

Subject Key Identifier(2.5.29.14):C0:9B:8B:7D:4F:87:B2:ED:3D:7C:68:B9:2D:23:83:7D:39:4B:1E:A0

Subject Alternative Name(2.5.29.17):stacks.ai

Basic Constraints(2.5.29.19):CA: false

CRL Distribution Points(2.5.29.31):http://crl.digicert.eu/DigiCertVerifiedMarkEuropeRSA4096SHA2562023CA1.crl

Certificate Policies(2.5.29.32):DigiCert VMC Policy http://www.digicert.com/CPS BIMI Mark Certificate General Policy

Authority Key Identifier(2.5.29.35):14:CA:B5:EC:E9:14:EA:97:4E:47:22:FC:15:7C:BC:B7:63:3B:44:2F

Extended Key Usage(2.5.29.37):Brand Indicator for Message Identification (BIMI)

Authority Information Access(1.3.6.1.5.5.7.1.1):CA Issuers: http://cacerts.digicert.eu/DigiCertVerifiedMarkEuropeRSA4096SHA2562023CA1.crt

Logotype (BIMI)(1.3.6.1.5.5.7.1.12):Embedded SVG logotype (see Logo section)

CT Precert SCTs(1.3.6.1.4.1.11129.2.4.2):Signed Certificate Timestamps (embedded)

ASN.1 Structure

Signed Certificate Timestamps

1 SCTSingle-log transparency

Log Name	Operator	SCT Timestamp	Lag
DigiCert 'Gorgon' log	DigiCert	2026-02-20	13h

Certificate Chain

Leaf CertificateStacks Technologies B.V.

Position 0

Subject: 1.3.6.1.4.1.311.60.2.1.3=NL, 2.5.4.15=Private Organization, 2.5.4.5=93518528, C=NL, ST=Noord-Holland, L=Amsterdam, 2.5.4.9=Nieuwezijds Voorburgwal 162, O=Stacks Technologies B.V., CN=Stacks Technologies B.V., 1.3.6.1.4.1.53087.1.13=Registered Mark, 1.3.6.1.4.1.53087.1.3=EM, 1.3.6.1.4.1.53087.1.4=019134874

Issuer: C=US, O=DigiCert\, Inc., CN=DigiCert Verified Mark Europe RSA4096 SHA256 2023 CA1

Serial: 0d:ba:70:64:e7:de:20:46:f3:d1:db:24:fb:33:80:12

SHA-256: a136f25fa59069d1...3d2fdbd0

2026-02-20 – 2027-03-23

Intermediate CADigiCert, Inc.

Position 1

Subject: C=US, O=DigiCert\, Inc., CN=DigiCert Verified Mark Europe RSA4096 SHA256 2023 CA1

Issuer: C=US, ST=Utah, L=Lehi, O=DigiCert\, Inc., OU=www.digicert.com, CN=DigiCert Verified Mark Root CA

Serial: 0b:1c:90:18:7f:f9:d5:3d:3c:0e:a5:a3:e3:6f:0a:2a

SHA-256: 80ec7c231bef5810...eb65b882

2023-03-08 – 2038-03-07

Root CADigiCert, Inc.

Position 2

Subject: C=US, ST=Utah, L=Lehi, O=DigiCert\, Inc., OU=www.digicert.com, CN=DigiCert Verified Mark Root CA

Issuer: C=US, ST=Utah, L=Lehi, O=DigiCert\, Inc., OU=www.digicert.com, CN=DigiCert Verified Mark Root CA

Serial: 06:c1:67:cf:eb:f4:8d:35:d6:24:10:18:5e:11:c5:eb

SHA-256: 504386c9ee8932fe...33c46b42

2019-09-23 – 2049-09-23

Raw PEM