Bitsy Independent Verifier

Checks Bitsy ownership proofs, profile manifests, and copy receipts entirely in your browser. Nothing is sent anywhere. Save this single file and it works offline. Don’t trust the badge; verify it.

Verify the verifier itself: this file’s SHA-256 is Bitcoin-anchored via OpenTimestamps at /anchor.php?verifier=1. Run sha256sum on your saved copy and compare; a tampered verifier can’t hide.

What are you verifying? Ownership proof or profile manifest (wallet signature) Copy receipt (Bitsy ed25519 key) Pre-send address check (against a signed manifest) Manifest chain (JSON from /chain.php?u=…) Message (paste exactly; every character matters) Signature Address the signature should match (0x…, Bitcoin 1…/bc1q…, or Solana base58) Verify

Ethereum proofs use personal_sign (EIP-191); Bitcoin proofs accept legacy signmessage and BIP-322 (including taproot bc1p… and Sparrow’s segwit default); Solana proofs are ed25519 over the raw message bytes; receipts are ed25519 with Bitsy’s published receipt key (included with every receipt). The verification code below is bundled from the audited @noble/secp256k1, @noble/hashes, and tweetnacl libraries. View source to inspect it.