attest.so is a multi-chain attestation protocol (Stellar, Solana, Starknet, Sui, Aptos) offering schemas, authorities, and resolvers, but the codebase is clearly Stellar-first: audits, whitepaper, and the deepest tests sit on Soroban, while the Anchor-based Solana program ships a placeholder-style devnet program ID with thinner coverage. Against the corpus, nothing closely matches the multi-chain unified design; the top general hit is UniProof at 0.047 UniProof - closest general match at 0.047 similarity, a single-chain Solana credentialing app, and the closest functional analog, ASSAP ASSAP - Solana-native attestation protocol analog, is a narrower anti-sybil attestation layer. Winner-DNA overlap is real but partial: Humanship ID Humanship ID - 5th place winner in identity/attestation space won 5th place in an adjacent identity niche, and the winners cohort skews heavily Solana-native, Rust, and Anchor, tech attest.so has, just not as its primary bet. Momentum is the strongest dimension: 1058 commits, 9 contributors, and continuous activity since mid-2024 GitHub metadata: 1058 commits, 9 contributors, 14 stars, though only 14 stars signals limited external pull. Ecosystem fit is the weakest number, since the Solana side reads as a secondary port rather than a native commitment. Next move: harden the Solana program with a real deployed ID and full test parity before positioning this as a Solana-native submission.