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---
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tags: [excalidraw]
---
==⚠ Switch to EXCALIDRAW VIEW in the MORE OPTIONS menu of this document. ⚠==
# Text Elements
Mineral comes
out of the ground
^DG2MSniZ
Wholesaler ^XClsOfzM
Manufacturer ^pGNYVhjr
Manufacturer ^CRwxAbGF
Certificate ^k6eEBTji
Certificate ^KB3IjPdQ
Certificate ^HF7626x4
Certificate ^cLckZ9Jj
Certificate ^UqiUZ9y5
Certificate
(duplicate) ^cgaJCMyf
Certificate
(duplicate) ^cJhdlhw7
Double spend problem: The wholesaler could provide
the same certificate to different manufacturers.
How do we prevent double spend?
Audit of the wholesaler => show me what you bought and what you sold
Do they add up? (structure + tech solution)
Wholesaler are honest (ontological solution ...)
NB: you could also worry about generation of "fake" certificates
but this seems trivially solvable by having the issuing authority
digitally sign their certificates and publish their public key. ^H2TZXU2p
"Illegal" metals ^VCinCbQQ
NB: "authority" and trust for the initial
certificate issuance logically
HAS to be outside of blockchain.
Blockchain can NOT address "trust" here. ^mhWAXKZt
Phone ^SVgUyQzn
Phone ^2UMTpHri
Supply Chain Tracing ^1LU7A4M2
What's the problem?
I want to know what went into my phone and where it came from?
E.g. re there "conflict minerals" in there? How much co2 was involved ... ^wxcn01tW
Stage 1: Mining ^C618fKjp
Stage 2: Aggregation ^BSJxcM2U
Stage 3: Manufacturing ^oSh4ZZoK
Stage 4: Consumer ^YK0fin9l
Phone is planet friendly! ^G6GJGRw8
!! Phone seems planet friendly
but is NOT! ^jctG5kXf
How is Blockchain/DLT relevant? How is it better or worse
than other solutions (e.g. centralized DB or honest wholesalers) ^82yluRaQ
these are
"legitimate"
from place X ^36VXGWo8
%%
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%%
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