The current GnuPG keys (since the 2025 upgrades) comprise:-
An Offline Certifying Key used only to sign Stamper's GnuPG keys as well as to sign Stamper's TSA keys:-
[these ARE the real ones - not the test ones]
pub ed25519 2025-10-19 [SC]
0B77 D1C4 1FEB FF24 6941 24DD B0D6 11D3 CDA6 23C1
uid [ unknown] stamper.itconsult.co.uk - Certification Key (offline)
sig 3 B0D611D3CDA623C1 2025-10-19 [self-signature]
sig 2A34FA1BDA26CF63 2025-10-19 Matthew Richardson (Jersey, Channel Islands)
A Timestamping Key used only to timestamp items submitted to Stamper. Each such signature will be assigned a unique "Stamper Id":-
[these ARE the real ones - not the test ones]
pub ed25519 2025-10-19 [C]
2110 05B6 F5A3 A273 C730 A059 5BBC C373 6032 3DF3
uid [ unknown] stamper.itconsult.co.uk - Timestamping Key
sig 3 5BBCC37360323DF3 2025-10-19 [self-signature]
sig B0D611D3CDA623C1 2025-10-19 stamper.itconsult.co.uk - Certification Key (offline)
sub ed25519 2025-10-19 [S]
sig 5BBCC37360323DF3 2025-10-19 [self-signature]
A Management Key used to sign Git commits as well as the lists of the highest signature number for each date:-
[these ARE the real ones - not the test ones]
pub ed25519 2025-10-19 [C]
28B3 5C5A F515 6FF1 438B AFDF 7F76 9DB9 D3A4 240A
uid [ unknown] stamper.itconsult.co.uk - Management Key
sig 3 7F769DB9D3A4240A 2025-10-19 [self-signature]
sig B0D611D3CDA623C1 2025-10-19 stamper.itconsult.co.uk - Certification Key (offline)
sub ed25519 2025-10-19 [S]
sig 7F769DB9D3A4240A 2025-10-19 [self-signature]
[to follow]
Note: These keys are not compatible with the latest versions of GnuPG, but can be used with version 1.4. The --pgp2 option is required to import them.
The original GnuPG keys (prior to the 2025 upgrades) comprise:-
A Timestamping Key used only to timestamp items submitted to Stamper. Each such signature will be assigned a unique "Stamper Id":-
pub 2046R/70B61F81 1995-10-11
Key fingerprint = 4B 12 BC D5 78 85 11 06 3B 54 31 90 E0 9D F3 06
uid Timestamp Service
sig 70B61F81 2014-05-25 Timestamp Service
sig 0712FEBD 1995-10-12 Matthew Richardson
A Management Key used to sign the lists of the highest
signature number for each date:-
pub 1024R/083A08A9 1995-08-27
Key fingerprint = 90 89 12 3A 4F D6 69 9B DF B2 7C B2 49 61 02 E5
uid Scheduler Service (MER_Schedule on \\MER_DECXL)
sig 083A08A9 1995-08-27 Scheduler Service (MER_Schedule on \\MER_DECXL)
sig 0712FEBD 1995-08-27 Matthew Richardson
These are both signed using my older key 0712FEBD.
These keys also include my newer key 2A34FA1BDA26CF63, and it can be seen using GnuPG 1.4, that my newer key has been signed by my older key:-
pub 4096R/DA26CF63 2021-06-20
Key fingerprint = 1C90 F3BE 100F B9AD F837 9DAE 2A34 FA1B DA26 CF63
uid Matthew Richardson (Jersey, Channel Islands)
sig 3 DA26CF63 2021-06-20 Matthew Richardson (Jersey, Channel Islands)
sig 3 0712FEBD 2021-06-20 Matthew Richardson
uid Matthew Richardson
sig 3 DA26CF63 2021-06-20 Matthew Richardson (Jersey, Channel Islands)
sig 3 0712FEBD 2021-06-20 Matthew Richardson
sub 0C/572550CB 2021-06-20
sig DA26CF63 2021-06-20 Matthew Richardson (Jersey, Channel Islands)
sub 0e/9E074D19 2021-06-20
sig DA26CF63 2021-06-20 Matthew Richardson (Jersey, Channel Islands)
sub 0C/92414590 2023-12-22
sig DA26CF63 2023-12-22 Matthew Richardson (Jersey, Channel Islands)
pub 1024R/0712FEBD 1994-09-25
Key fingerprint = BC DB 9E 23 7B 76 4E 8E F4 05 BC 6F 8A D7 1B 0D
uid Matthew Richardson
sig 0712FEBD 1995-10-12 Matthew Richardson
uid Matthew Richardson
sig 0712FEBD 1994-09-25 Matthew Richardson
As a historical aside, both my key 0712FEBD and Stamper's key 70B61F81 are listed in The Global Trust Register 1988.