Blockchain Glossary

Addresses and accounts

A digital wallet does not store on-chain assets inside the application itself. Asset state lives on the relevant blockchain. The wallet primarily helps you manage addresses, authorize transactions, and prove control through cryptographic keys. This mental model makes it easier to understand device changes, network differences, and why the same-looking address can show different assets on different chains. For addresses and accounts, separate the object you are acting on, the active network, the expected outcome, and the evidence you can independently verify. Do not rely on interface wording alone; use addresses, transaction hashes, explorers, and contract details where appropriate. For this topic, a useful sequence is: understand the concept, check before acting, submit only when the details are clear, verify on-chain status, and review any permissions that remain afterward.

A practical check

A digital wallet does not store on-chain assets inside the application itself. Asset state lives on the relevant blockchain. The wallet primarily helps you manage addresses, authorize transactions, and prove control through cryptographic keys. This mental model makes it easier to understand device changes, network differences, and why the same-looking address can show different assets on different chains. For addresses and accounts, separate the object you are acting on, the active network, the expected outcome, and the evidence you can independently verify. Do not rely on interface wording alone; use addresses, transaction hashes, explorers, and contract details where appropriate. For this topic, a useful sequence is: understand the concept, check before acting, submit only when the details are clear, verify on-chain status, and review any permissions that remain afterward.

Private keys and seed phrases

A digital wallet does not store on-chain assets inside the application itself. Asset state lives on the relevant blockchain. The wallet primarily helps you manage addresses, authorize transactions, and prove control through cryptographic keys. This mental model makes it easier to understand device changes, network differences, and why the same-looking address can show different assets on different chains. For private keys and seed phrases, separate the object you are acting on, the active network, the expected outcome, and the evidence you can independently verify. Do not rely on interface wording alone; use addresses, transaction hashes, explorers, and contract details where appropriate. For this topic, a useful sequence is: understand the concept, check before acting, submit only when the details are clear, verify on-chain status, and review any permissions that remain afterward.

A practical check

A digital wallet does not store on-chain assets inside the application itself. Asset state lives on the relevant blockchain. The wallet primarily helps you manage addresses, authorize transactions, and prove control through cryptographic keys. This mental model makes it easier to understand device changes, network differences, and why the same-looking address can show different assets on different chains. For private keys and seed phrases, separate the object you are acting on, the active network, the expected outcome, and the evidence you can independently verify. Do not rely on interface wording alone; use addresses, transaction hashes, explorers, and contract details where appropriate. For this topic, a useful sequence is: understand the concept, check before acting, submit only when the details are clear, verify on-chain status, and review any permissions that remain afterward.

Blocks and confirmations

A digital wallet does not store on-chain assets inside the application itself. Asset state lives on the relevant blockchain. The wallet primarily helps you manage addresses, authorize transactions, and prove control through cryptographic keys. This mental model makes it easier to understand device changes, network differences, and why the same-looking address can show different assets on different chains. For blocks and confirmations, separate the object you are acting on, the active network, the expected outcome, and the evidence you can independently verify. Do not rely on interface wording alone; use addresses, transaction hashes, explorers, and contract details where appropriate. For this topic, a useful sequence is: understand the concept, check before acting, submit only when the details are clear, verify on-chain status, and review any permissions that remain afterward.

A practical check

A digital wallet does not store on-chain assets inside the application itself. Asset state lives on the relevant blockchain. The wallet primarily helps you manage addresses, authorize transactions, and prove control through cryptographic keys. This mental model makes it easier to understand device changes, network differences, and why the same-looking address can show different assets on different chains. For blocks and confirmations, separate the object you are acting on, the active network, the expected outcome, and the evidence you can independently verify. Do not rely on interface wording alone; use addresses, transaction hashes, explorers, and contract details where appropriate. For this topic, a useful sequence is: understand the concept, check before acting, submit only when the details are clear, verify on-chain status, and review any permissions that remain afterward.

Gas and fees

A digital wallet does not store on-chain assets inside the application itself. Asset state lives on the relevant blockchain. The wallet primarily helps you manage addresses, authorize transactions, and prove control through cryptographic keys. This mental model makes it easier to understand device changes, network differences, and why the same-looking address can show different assets on different chains. Gas prices can change with congestion, transaction complexity, and protocol conditions. A pending transaction is not the same as a final transaction, so verify the hash and confirmation state on the correct network before relying on the result. For this topic, a useful sequence is: understand the concept, check before acting, submit only when the details are clear, verify on-chain status, and review any permissions that remain afterward.

A practical check

A digital wallet does not store on-chain assets inside the application itself. Asset state lives on the relevant blockchain. The wallet primarily helps you manage addresses, authorize transactions, and prove control through cryptographic keys. This mental model makes it easier to understand device changes, network differences, and why the same-looking address can show different assets on different chains. Gas prices can change with congestion, transaction complexity, and protocol conditions. A pending transaction is not the same as a final transaction, so verify the hash and confirmation state on the correct network before relying on the result. For this topic, a useful sequence is: understand the concept, check before acting, submit only when the details are clear, verify on-chain status, and review any permissions that remain afterward.

DApps, contracts, and approvals

A digital wallet does not store on-chain assets inside the application itself. Asset state lives on the relevant blockchain. The wallet primarily helps you manage addresses, authorize transactions, and prove control through cryptographic keys. This mental model makes it easier to understand device changes, network differences, and why the same-looking address can show different assets on different chains. An approval usually gives a contract permission to spend within a defined scope. It may not move assets immediately, but broad or persistent permissions can increase exposure. Review the spender, allowance, network, and whether the permission is still needed. For this topic, a useful sequence is: understand the concept, check before acting, submit only when the details are clear, verify on-chain status, and review any permissions that remain afterward.

A practical check

A digital wallet does not store on-chain assets inside the application itself. Asset state lives on the relevant blockchain. The wallet primarily helps you manage addresses, authorize transactions, and prove control through cryptographic keys. This mental model makes it easier to understand device changes, network differences, and why the same-looking address can show different assets on different chains. An approval usually gives a contract permission to spend within a defined scope. It may not move assets immediately, but broad or persistent permissions can increase exposure. Review the spender, allowance, network, and whether the permission is still needed. For this topic, a useful sequence is: understand the concept, check before acting, submit only when the details are clear, verify on-chain status, and review any permissions that remain afterward.

Core terms at a glance