Spectral Contracts — Physics-Signed Document Signing

Spectral Contracts replace traditional Public Key Infrastructure (PKI) with a physics-based signing algorithm. Each signature is anchored to the signer's WNSP Ψ channel wavelength, making the signature inseparable from the signer's spectral identity.

Signing algorithm: SHA-256(content) ⊕ hex(λ_signer) — the document hash is XOR-combined with the hexadecimal representation of the signer's wavelength. Verification requires knowing the signer's Ψ channel, which is derived deterministically from their spectral address.

No certificate authorities — spectral identity replaces PKI trust chains
Signature algorithm: SHA-256(content) ⊕ hex(λ_signer)
Signer identity anchored to their WNSP Ψ channel (wavelength, OAM mode, polarisation)
Verification is deterministic and physics-consistent
AGPL-3.0 licensed