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The Horological Society's new "Caliber Archive" uses microscopic machining marks to authenticate pre-1980 movements. Each of the 12,000 documented watches has a blockchain certificate. This combats brands like Omega reissuing vintage designs with modern parts. The system caught 37% of "Frankenwatches" at last year's auctions. Traditionalists initially resisted digitization but now appreciate how it preserves craft knowledge - the archive includes interviews with retired watchmakers about old techniques.