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Zpub Extended Public Key

What is Zpub Extended Public Key?

A Zpub Extended Public Key is a type of extended public key used in hierarchical deterministic (HD) wallets, specifically for Bitcoin and some other cryptocurrencies. It's an evolution of the xpub key, providing enhanced privacy and security features.

Key Characteristics

  1. Hierarchical Deterministic: Part of HD wallet structure, allowing generation of multiple addresses.

  2. Enhanced Privacy: Offers improved privacy compared to traditional xpub keys.

  3. Segwit Compatible: Designed for use with Segregated Witness (SegWit) addresses.

  4. Public Nature: Can generate public addresses without exposing private keys.

  5. Bech32 Format: Uses Bech32 encoding for improved error detection.

Functions of Zpub Keys

  1. Address Generation: Allows creation of multiple public addresses from a single key.

  2. Wallet Recovery: Facilitates easier backup and recovery of wallet addresses.

  3. Auditing: Enables monitoring of transactions without access to private keys.

  4. Multi-signature Setups: Used in creating complex multi-signature wallet arrangements.

  5. Watch-only Wallets: Ideal for creating wallets that can monitor but not spend funds.

Zpub vs. Other Extended Public Keys

  1. Xpub: Zpub is an upgraded version of Xpub, offering better privacy.

  2. Ypub: Similar to Zpub but for wrapped SegWit addresses.

  3. Vpub: Used for nested SegWit addresses in P2SH scripts.

  4. Tpub: The testnet equivalent of Xpub.

Advantages of Zpub

  1. Improved Privacy: Harder to link different addresses to the same wallet.

  2. SegWit Compatibility: Natively works with SegWit addresses for lower fees and better scalability.

  3. Future-Proofing: Designed with future Bitcoin upgrades in mind.

  4. Error Resistance: Bech32 encoding provides better error detection and correction.

  5. Standardization: Part of efforts to standardize HD wallet implementations.

Similar Terms

  • Public-Key: A cryptographic key that can be used to verify digital signatures created with the corresponding private key.

  • Bitcoin: The first and most well-known cryptocurrency, for which Zpub keys are primarily used.

  • Cryptocurrency Wallet: A software program that stores private and public keys and interacts with various blockchain to enable users to send and receive digital currency.

ChainFi, Inc (dba "Arch Lending" and referred to as "Arch" on this website) is not a bank. 


Loan Services. Crypto backed loans (“Loans”) are offered to U.S. borrowers by ChainFi, Inc. NMLS #2637200. NMLS Consumer Access.


Loan Availability. Loan availability may vary based on jurisdiction. Loans are not available to U.S. residents of AL, CA, DE, HI, ID, IL, MN, MS, MT, NV, ND, RI, SC, SD, TX, VT, VA, or WA or to U.S. businesses in CA, DC, HI, MT, NV, NM, ND, RI, SD, or VT. We encourage you to contact us to determine if our loans are available in your state.


Loan Agreement. Loans are issued pursuant to a loan agreement between Arch and you. This legally binding document outlines your rights, obligations, interest rates, repayment schedules, potential fees, default consequences, and any other terms and conditions related to your loan. Your loan agreement may contain state-specific provisions. By signing the loan agreement, you acknowledge your acceptance of these terms, so please ensure you understand every aspect before proceeding. 


Interest Rates. Annual interest rates are subject to change and may vary based on loan type, the principal amount requested, and the borrower's jurisdiction of residence. 


Supported Assets. For the latest list of supported assets, refer to our Help Center.


No Financial, Investment or Tax Advice Provided. The information on this website, articles, guides, tools, or communications, is for general informational purposes only. It is not, and should not be construed as, financial, investment, tax, or other professional advice. Arch is not a financial advisor, investment advisor, broker, tax advisor, or accounting firm. We do not provide personalized advice or recommendations for your unique financial situation or goals. You should consult a qualified professional before making any financial, investment or tax decisions. Any examples, hypothetical scenarios, calculator results, or general discussions of financial or tax concepts are for illustration only and don't guarantee specific outcomes or apply to your personal circumstances. By using this website, you acknowledge you are solely responsible for your financial decisions and will seek independent professional advice as needed.


No Guarantee of Offers, Loans, or Returns. Your use or access to this website or platform does not guarantee the availability of any current and/or future offer, promotion, terms, loan, or return. All offers, promotions, terms, and loans are subject to availability and the sole discretion of Arch. We reserve the right to modify or withdraw any offering at any time without prior notice.


State-Specific Disclosures. Additional state-specific disclaimers may apply depending on your location. We encourage you to review all relevant disclaimers and terms carefully before proceeding.

State of Idaho Disclaimer. In Idaho, ChainFi, Inc is doing business as Arch Lending and does not conduct activity under the name Arch.

ChainFi, Inc (dba "Arch Lending"), 595 Broadway, Floor 4, New York, NY 10012


For general questions, visit our Help Center or use the Intercom chat widget in the bottom right corner of any screen on this website. 


For customer service or complaints, email us at support@archlending.com, or call +1 201-690-7206 between Monday-Friday from 9am-7pm ET and Saturday-Sunday from 10am-5pm ET.

© 2025 All Rights Reserved

ChainFi, Inc (dba "Arch Lending" and referred to as "Arch" on this website) is not a bank. 


Loan Services. Crypto backed loans (“Loans”) are offered to U.S. borrowers by ChainFi, Inc. NMLS #2637200. NMLS Consumer Access.


Loan Availability. Loan availability may vary based on jurisdiction. Loans are not available to U.S. residents of AL, CA, DE, HI, ID, IL, MN, MS, MT, NV, ND, RI, SC, SD, TX, VT, VA, or WA or to U.S. businesses in CA, DC, HI, MT, NV, NM, ND, RI, SD, or VT. We encourage you to contact us to determine if our loans are available in your state.


Loan Agreement. Loans are issued pursuant to a loan agreement between Arch and you. This legally binding document outlines your rights, obligations, interest rates, repayment schedules, potential fees, default consequences, and any other terms and conditions related to your loan. Your loan agreement may contain state-specific provisions. By signing the loan agreement, you acknowledge your acceptance of these terms, so please ensure you understand every aspect before proceeding. 


Interest Rates. Annual interest rates are subject to change and may vary based on loan type, the principal amount requested, and the borrower's jurisdiction of residence. 


Supported Assets. For the latest list of supported assets, refer to our Help Center.


No Financial, Investment or Tax Advice Provided. The information on this website, articles, guides, tools, or communications, is for general informational purposes only. It is not, and should not be construed as, financial, investment, tax, or other professional advice. Arch is not a financial advisor, investment advisor, broker, tax advisor, or accounting firm. We do not provide personalized advice or recommendations for your unique financial situation or goals. You should consult a qualified professional before making any financial, investment or tax decisions. Any examples, hypothetical scenarios, calculator results, or general discussions of financial or tax concepts are for illustration only and don't guarantee specific outcomes or apply to your personal circumstances. By using this website, you acknowledge you are solely responsible for your financial decisions and will seek independent professional advice as needed.


No Guarantee of Offers, Loans, or Returns. Your use or access to this website or platform does not guarantee the availability of any current and/or future offer, promotion, terms, loan, or return. All offers, promotions, terms, and loans are subject to availability and the sole discretion of Arch. We reserve the right to modify or withdraw any offering at any time without prior notice.


State-Specific Disclosures. Additional state-specific disclaimers may apply depending on your location. We encourage you to review all relevant disclaimers and terms carefully before proceeding.

State of Idaho Disclaimer. In Idaho, ChainFi, Inc is doing business as Arch Lending and does not conduct activity under the name Arch.

ChainFi, Inc (dba "Arch Lending"), 595 Broadway, Floor 4, New York, NY 10012


For general questions, visit our Help Center or use the Intercom chat widget in the bottom right corner of any screen on this website. 


For customer service or complaints, email us at support@archlending.com, or call +1 201-690-7206 between Monday-Friday from 9am-7pm ET and Saturday-Sunday from 10am-5pm ET.

© 2025 All Rights Reserved

ChainFi, Inc (dba "Arch Lending" and referred to as "Arch" on this website) is not a bank. 


Loan Services. Crypto backed loans (“Loans”) are offered to U.S. borrowers by ChainFi, Inc. NMLS #2637200. NMLS Consumer Access.


Loan Availability. Loan availability may vary based on jurisdiction. Loans are not available to U.S. residents of AL, CA, DE, HI, ID, IL, MN, MS, MT, NV, ND, RI, SC, SD, TX, VT, VA, or WA or to U.S. businesses in CA, DC, HI, MT, NV, NM, ND, RI, SD, or VT. We encourage you to contact us to determine if our loans are available in your state.


Loan Agreement. Loans are issued pursuant to a loan agreement between Arch and you. This legally binding document outlines your rights, obligations, interest rates, repayment schedules, potential fees, default consequences, and any other terms and conditions related to your loan. Your loan agreement may contain state-specific provisions. By signing the loan agreement, you acknowledge your acceptance of these terms, so please ensure you understand every aspect before proceeding. 


Interest Rates. Annual interest rates are subject to change and may vary based on loan type, the principal amount requested, and the borrower's jurisdiction of residence. 


Supported Assets. For the latest list of supported assets, refer to our Help Center.


No Financial, Investment or Tax Advice Provided. The information on this website, articles, guides, tools, or communications, is for general informational purposes only. It is not, and should not be construed as, financial, investment, tax, or other professional advice. Arch is not a financial advisor, investment advisor, broker, tax advisor, or accounting firm. We do not provide personalized advice or recommendations for your unique financial situation or goals. You should consult a qualified professional before making any financial, investment or tax decisions. Any examples, hypothetical scenarios, calculator results, or general discussions of financial or tax concepts are for illustration only and don't guarantee specific outcomes or apply to your personal circumstances. By using this website, you acknowledge you are solely responsible for your financial decisions and will seek independent professional advice as needed.


No Guarantee of Offers, Loans, or Returns. Your use or access to this website or platform does not guarantee the availability of any current and/or future offer, promotion, terms, loan, or return. All offers, promotions, terms, and loans are subject to availability and the sole discretion of Arch. We reserve the right to modify or withdraw any offering at any time without prior notice.


State-Specific Disclosures. Additional state-specific disclaimers may apply depending on your location. We encourage you to review all relevant disclaimers and terms carefully before proceeding.

State of Idaho Disclaimer. In Idaho, ChainFi, Inc is doing business as Arch Lending and does not conduct activity under the name Arch.

ChainFi, Inc (dba "Arch Lending"), 595 Broadway, Floor 4, New York, NY 10012


For general questions, visit our Help Center or use the Intercom chat widget in the bottom right corner of any screen on this website. 


For customer service or complaints, email us at support@archlending.com, or call +1 201-690-7206 between Monday-Friday from 9am-7pm ET and Saturday-Sunday from 10am-5pm ET.

© 2025 All Rights Reserved