Guestbook book that was written by vantablack420 called unsigned_vantablack420.md - located near spawn of the world at -46 / 55 / 266 in the overworld.
The book is located on the tilder server.
VANTABLACK'S SECRET TRESURE ROOM #2
5/17/2021
one treasure per person per lifetime! keep this place secret
sign your name and what you took! guest-
book on next page
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GUESTBOOK:
1. PingMastered
Trident - We Are All Compost In Training
2. Cass "Owly" Python, 2021-05-25 - only took shulker box
3. MossMiss (aka missmoss) 2021-06-05 took Hand Crushed by a Mallet
4. the_pumpkin_man
In a time out of the time - took a weed shield: "Smoke Two Joints"
because smoke it everyday
gifted a strange looking map
5. notfire
7/23/21 - took a trident (three cheers for sweet revenge)
6. SnowCode
12-12-21 - took "Left hand suzuki method" pickaxe. This place is so cool!
7. inthreedee 2022-01-09 took Ward off the Vultures xD
8. praetor242
2022-02-07 left precious Southern Voodoo Doll :D
9. peopleRplaces
2022-02-27 - took "Trans Day Of Revenge" (crossbow)
10. Amber Lovelace 2022-05-20 - took "Queer as in Fuck You" (Shield)