Sybil-Resistant Blockchains
Fake nodes and spam attacks threaten decentralization.
Sybil resistance ensures only legitimate participants influence the network.
Some methods exist today (PoW, PoS, randomized committees) Widespread, fully robust solutions? Still evolving—mainstream adoption may take 2–5 years.
Capture GNSS raw + short video at the claimed location, verify the GNSS measurements against satellite ephemeris and signal signatures, then validate the phone’s integrity via Samsung attestation (Knox/secure element) to confirm hardware wasn’t tampered. Produce a signed proof (measurements + attestation) that can be recorded on-chain or stored as verifiable evidence.