seedsigner/docs/qr_formats.md

QR Formats

Scanning QR Codes

SeedSigner supports scanning the following QR formats:

Animated QR Formats:

• PSBT
  • Blockchain Commons UR2 PSBT
  • Specter Desktop base64 segments animated
  • Legacy UR Format that should no longer be used

Static QR Formats:

• PSBT
  • Base64 (if the PSBT byte size is too large, SS may have trouble scanning)
• Seed
  • SeedSigner SeedQR format
    • A 48 or 96 length string of numbers representing a BIP-39 wordlist (all wordlist languages supported). The numeric sequence is a concatenation of four-digit, zero-padded segments. Each four-digit segment represents a BIP-39 word expressed by a zero-indexed position in the wordlist. For example, "0000" is "abandon" in the English BIP-39 wordlist.
  • SeedSigner CompactSeedQR format
    • The 128- or 256-bit entropy encoded as a binary QR
  • English BIP-39 Mnemonic words separated by a space (currently only supports 12 and 24 word seeds)
  • English BIP-39 Mnemonic with only first 4 letters separated by a space (currently only supports 12 and 24 word seeds)

Displaying QR Codes

SeedSigner supports displaying QR codes in the following formats:

Animated QR Formats:

• PSBT
  • Blockchain Commons UR2 PSBT
  • Specter Desktop base64 segments animated

Static QR Formats:

• Seed
  • SeedSigner Seed QR format
    • A 48 or 96 length string of numbers representing a BIP-39 wordlist (all wordlist languages supported). The numeric sequence is a concatenation of four-digit, zero-padded segments. Each four-digit segment represents a BIP-39 word expressed by a zero-indexed position in the wordlist. For example, "0000" is "abandon" in the English BIP-39 wordlist.