# CRYPTO 101

> LEARN THE TOOLS. KEEP YOUR RECORDS.


## Posts

- [4 resources for backup planning, account access and crypto learning](https://cryptoptimus.com/crypto-recovery-tools-compared/): Cryptosteel Seed24, Trezor Keep Metal Single-share, YubiKey 5C NFC and Ledger Academy have separate roles. This comparison helps you avoid buying one type of product to solve a different problem.
- [4 crypto research tools compared: transaction evidence, network context and market data](https://cryptoptimus.com/crypto-research-tools-compared/): Etherscan, mempool.space, DeFiLlama and CoinGecko answer different questions. Compare them by the evidence you need, not by the number of colourful charts on screen.
- [4 crypto record tools compared: local history, hosted reports and mobile tracking](https://cryptoptimus.com/crypto-record-tools-compared/): Compare rotki, Koinly, CoinTracker and Crypto Pro by the record you need to produce. A portfolio display, a reconciled history and a tax report are different outputs.
- [3 software wallets compared for network support and everyday permissions](https://cryptoptimus.com/crypto-software-wallets-compared/): Compare MetaMask, Rabby and Exodus around a named network and task. A wallet interface is useful only when you understand what it connects to and what it asks you to authorise.
- [4 hardware wallets compared: screens, phone support and backup routines](https://cryptoptimus.com/crypto-hardware-wallets-compared/): Compare Trezor Safe 5, Ledger Flex, BitBox02 Nova Multi and Keystone 3 Pro by the devices you use, the details you need to inspect and the backup process you can maintain.
- [Ledger Academy review: building a useful reading routine](https://cryptoptimus.com/ledger-academy-review/): A topic-based educational library to use alongside independent sources and your own learning notes.
- [YubiKey 5C NFC review: its role in an access plan](https://cryptoptimus.com/yubikey-5c-nfc-review/): A USB-C and NFC security key for supported account sign-ins, with a role separate from wallet recovery.
- [Trezor Keep Metal Single-share review: its role in an access plan](https://cryptoptimus.com/trezor-keep-metal-review/): A format-specific metal backup product for the documented 20-word single-share workflow.
- [Cryptosteel Seed24 review: its role in an access plan](https://cryptoptimus.com/cryptosteel-seed24-review/): A physical tile-based backup product to assess by capacity, assembly and storage responsibilities.
- [Revoke.cash review: understanding token allowances](https://cryptoptimus.com/revoke-cash-review/): An allowance-inspection tool to understand when reviewing token spending permissions on supported networks.
- [CoinGecko review: what the data can and cannot tell you](https://cryptoptimus.com/coingecko-review/): An aggregated market-data reference for checking asset identity, listed markets and the context of a quoted price.
- [DeFiLlama review: what the data can and cannot tell you](https://cryptoptimus.com/defillama-review/): A research dashboard for comparing definitions and trends across protocols and networks.
- [mempool.space review: what the data can and cannot tell you](https://cryptoptimus.com/mempool-space-review/): A Bitcoin explorer and mempool visualiser for understanding a transaction’s context and fee units.
- [Etherscan review: what the data can and cannot tell you](https://cryptoptimus.com/etherscan-review/): An Ethereum explorer for investigating a transaction reference or public address without treating the result as an identity check.
- [Crypto Pro review: imports, records and the output you need](https://cryptoptimus.com/crypto-pro-review/): An Apple-focused portfolio tracker for readers who want personal records and price alerts across their usual devices.
- [CoinTracker review: imports, records and the output you need](https://cryptoptimus.com/cointracker-review/): A hosted portfolio and tax-reporting service to examine through a small reconciliation trial before a full-history import.
- [Koinly review: imports, records and the output you need](https://cryptoptimus.com/koinly-review/): A hosted transaction-import and reporting service to compare when reconciling records across multiple sources.
- [rotki review: imports, records and the output you need](https://cryptoptimus.com/rotki-review/): A local-first record and portfolio application for readers who want to organise history while retaining control of the main database.
- [Exodus Wallet review: the network, the interface and permissions](https://cryptoptimus.com/exodus-review/): A desktop and mobile wallet to compare when you want a multi-asset interface with a documented support path.
- [Rabby Wallet review: the network, the interface and permissions](https://cryptoptimus.com/rabby-review/): An EVM-focused wallet interface to examine when your work spans Ethereum-compatible applications.
- [MetaMask review: the network, the interface and permissions](https://cryptoptimus.com/metamask-review/): A wallet interface for people who need to interact with supported networks and applications, with permissions to review carefully.
- [Keystone 3 Pro review: compatibility, confirmation and backup](https://cryptoptimus.com/keystone-3-pro-review/): A large-screen wallet to compare when you prefer a documented QR-based signing routine.
- [BitBox02 Nova Multi review: compatibility, confirmation and backup](https://cryptoptimus.com/bitbox02-nova-review/): A compact hardware wallet with USB-C and Bluetooth, plus a microSD-based backup workflow to understand before choosing.
- [Ledger Flex review: compatibility, confirmation and backup](https://cryptoptimus.com/ledger-flex-review/): An E Ink touchscreen signer for readers comparing a desktop and mobile routine.
- [Trezor Safe 5 review: compatibility, confirmation and backup](https://cryptoptimus.com/trezor-safe-5-review/): A touchscreen hardware wallet to consider for a wired routine with a compatible computer or Android device.
- [Prepare an incident handover before you need one](https://cryptoptimus.com/prepare-an-incident-handover-before-you-need-one/): Keep a non-secret timeline, verified help routes and unanswered questions ready for an appropriate responder.
- [Compare crypto tools by the job you need to finish](https://cryptoptimus.com/compare-crypto-tools-by-the-job-you-need-to-finish/): Create a shortlist around the device, input, output and ongoing work each option requires.
- [A four-session crypto study plan with something to show for it](https://cryptoptimus.com/a-four-session-crypto-study-plan-with-something-to-show-for-it/): Use recall, a fictional example and one evidence note to turn reading time into retained understanding.
- [Missing cost is not zero: keep portfolio arithmetic honest](https://cryptoptimus.com/missing-cost-is-not-zero-keep-portfolio-arithmetic-honest/): Use fictional quantities and dated valuations to distinguish a complete subtotal from an unsupported result.
- [Make a crypto research note another person can follow](https://cryptoptimus.com/make-a-crypto-research-note-another-person-can-follow/): Give each claim a source, date, scope and unresolved question rather than collecting screenshots alone.
- [The token, the picture and the permission are different records](https://cryptoptimus.com/the-token-the-picture-and-the-permission-are-different-records/): Build a reading checklist for token identity, metadata and the separate terms attached to creative work.
- [Draw a DeFi dependency map before interpreting the dashboard](https://cryptoptimus.com/draw-a-defi-dependency-map-before-interpreting-the-dashboard/): Follow the interface, contracts, assets and external dependencies without turning metrics into a safety score.
- [A stablecoin name is the beginning of the research](https://cryptoptimus.com/a-stablecoin-name-is-the-beginning-of-the-research/): Separate the target value, backing description, redemption route and token identity.
- [Write a recovery plan without writing down the secret](https://cryptoptimus.com/write-a-recovery-plan-without-writing-down-the-secret/): Record responsibilities and official instructions while keeping actual recovery material out of ordinary notes.
- [Connected, approved, signed: three different wallet actions](https://cryptoptimus.com/connected-approved-signed-three-different-wallet-actions/): Keep wallet connections, token allowances and signature requests in separate questions.
- [Put a tempting crypto offer through an evidence check](https://cryptoptimus.com/put-a-tempting-crypto-offer-through-an-evidence-check/): Separate the promise, the payment request and the source before making any commitment.
- [Build a crypto security routine you can actually repeat](https://cryptoptimus.com/build-a-crypto-security-routine-you-can-actually-repeat/): Create a short maintenance record for software, access routes and recovery dependencies.
- [Turn an exchange export into an organised working file](https://cryptoptimus.com/turn-an-exchange-export-into-an-organised-working-file/): Preserve originals, map fields and isolate exceptions before trusting a combined transaction list.
- [Read a transaction page without jumping to conclusions](https://cryptoptimus.com/read-a-transaction-page-without-jumping-to-conclusions/): Use an explorer as evidence for a specific network question, with its limits still visible.
- [A transfer preparation note that stops on missing information](https://cryptoptimus.com/a-transfer-preparation-note-that-stops-on-missing-information/): Keep the destination, network, fee assumptions and unresolved questions in one non-secret record.
- [Read a fee estimate by checking its units first](https://cryptoptimus.com/read-a-fee-estimate-by-checking-its-units-first/): Work through fictional Ethereum and Bitcoin examples without treating a worksheet as a live quote.
- [Same ticker, different network: make an asset identity card](https://cryptoptimus.com/same-ticker-different-network-make-an-asset-identity-card/): Record network and asset identity together so a familiar name does not become an assumption.
- [Who can do what? A custody responsibilities worksheet](https://cryptoptimus.com/who-can-do-what-a-custody-responsibilities-worksheet/): Map authorisation, service dependencies and recovery responsibilities before comparing devices.
- [What a wallet screen shows, and what it does not hold](https://cryptoptimus.com/what-a-wallet-screen-shows-and-what-it-does-not-hold/): Separate the interface, account, signing authority and recovery method using a fictional example.
- [A coin, a token and a network: organise the names before learning more](https://cryptoptimus.com/a-coin-a-token-and-a-network-organise-the-names-before-learning-more/): Build a small identity card that separates an asset, its network and the service displaying it.
- [Hello world!](https://cryptoptimus.com/hello-world/): Welcome to WordPress. This is your first post. Edit or delete it, then start writing!

## Pages

- [Refund and Returns Policy](https://cryptoptimus.com/refund_returns/): This is a sample page.
- [About Us](https://cryptoptimus.com/about-us/): Welcome to Cryptoptimus, an independent cryptocurrency and blockchain publication dedicated to simplifying decentralized finance, Web3, and market analysis for everyday investors.
- [Financial Disclaimer](https://cryptoptimus.com/financial-disclaimer/): The information provided on Cryptoptimus (https://cryptoptimus.com) is for general educational, educational, and informational purposes only.
- [Privacy Policy](https://cryptoptimus.com/privacy-policy-2/): At Cryptoptimus, accessible from https://cryptoptimus.com, one of our main priorities is the privacy of our visitors.
- [Editorial approach](https://cryptoptimus.com/editorial-policy/): Sources, dated checks and the limits of what we know.
- [Affiliate Disclosure](https://cryptoptimus.com/affiliate-disclosure/): How product links and purchases support this site.
- [Terms](https://cryptoptimus.com/terms/): Using this site and its digital products.
- [Privacy](https://cryptoptimus.com/privacy/): The information this site uses and how to contact us.
- [Contact](https://cryptoptimus.com/contact/): Questions about a tool, a purchase or something you have read? Get in touch.
- [About](https://cryptoptimus.com/about/): Welcome to Chain Notes.
- [Quick tips](https://cryptoptimus.com/quick-tips/): Useful habits for research and record keeping.
- [Compare the workflows](https://cryptoptimus.com/best-picks/): Side-by-side choices for wallets, records, research and recovery organisation.
- [A closer look at the tools](https://cryptoptimus.com/reviews/): Sourced research with setup details, dependencies and limits you can inspect.
- [Understand what you are looking at](https://cryptoptimus.com/blog/): Terms, records and the questions worth asking before you use a crypto tool.
- [Home](https://cryptoptimus.com/): LEARN THE TOOLS. KEEP YOUR RECORDS.
- [My tools](https://cryptoptimus.com/my-tools/): Find the apps you can use and return to the projects saved in this browser.
- [Transaction Record Decoder](https://cryptoptimus.com/tools/transaction-decoder/): Explain copied EVM receipts or Bitcoin input/output totals, with fee arithmetic and missing-data checks.
- [Incident Evidence Pack Builder](https://cryptoptimus.com/tools/incident-kit/): Build a case-specific evidence inventory, dated chronology and support report for 12 incident types.
- [Crypto Research Evidence Desk](https://cryptoptimus.com/tools/research-desk/): Investigate 100 criteria across 20 research frameworks, with evidence prompts and a worked comparison.
- [Custody Planning Workbook](https://cryptoptimus.com/tools/custody-plan/): Answer questions about your arrangement to build a tailored operating checklist and responsibility plan.
- [Transaction Ledger Organizer](https://cryptoptimus.com/tools/transaction-ledger/): Map CSV columns, review duplicate candidates, pair transfer legs and retain original row references.
- [Fee & Break-even Planner](https://cryptoptimus.com/tools/fee-break-even/): Compare fee routes, total costs and the price needed to break even, using your own assumptions.
- [Transaction Preparation Sheet](https://cryptoptimus.com/tools/transaction-prep/): Gather network, destination and routing details with 12 authored preparation checklists.
- [Offer Warning Checklist](https://cryptoptimus.com/tools/offer-checklist/): Work through 40 warning prompts and keep observed facts separate from unanswered questions.
- [Network Fee Converter](https://cryptoptimus.com/tools/network-fees/): Convert your gas or virtual-size inputs into an explained fee estimate, with optional manual fiat conversion.
- [Crypto Concepts Map](https://cryptoptimus.com/tools/concept-map/): Search 120 definitions, explore 60 relationships and keep your own study cards.
- [All tools](https://cryptoptimus.com/tools/): Free reference tools and premium workspaces for the concepts, sources and records you want to keep.
- [My account](https://cryptoptimus.com/my-account/): Your orders, downloads and account details, all in one place.
- [Checkout](https://cryptoptimus.com/checkout/): Use your account to keep your downloads together. Your order summary shows exactly what is included.
- [Cart](https://cryptoptimus.com/cart/): Review your selection, then continue when you are ready.
- [Shop](https://cryptoptimus.com/shop/): Explore the tools in our shop.

## Products

- [All App Access](https://cryptoptimus.com/product/all-app-access/): One purchase opens every app on this site, including new apps added later. Keep your projects in your browser.
- [Transaction Record Decoder](https://cryptoptimus.com/product/transaction-record-decoder/): Explain copied EVM receipts or Bitcoin input/output totals, with fee arithmetic and missing-data checks.
- [Incident Evidence Pack Builder](https://cryptoptimus.com/product/incident-evidence-pack-builder/): Build a case-specific evidence inventory, dated chronology and support report for 12 incident types.
- [Crypto Research Evidence Desk](https://cryptoptimus.com/product/crypto-research-evidence-desk/): Investigate 100 criteria across 20 research frameworks, with evidence prompts and a worked comparison.
- [Custody Planning Workbook](https://cryptoptimus.com/product/custody-planning-workbook/): Answer questions about your arrangement to build a tailored operating checklist and responsibility plan.
- [Transaction Ledger Organizer](https://cryptoptimus.com/product/transaction-ledger-organizer/): Map CSV columns, review duplicate candidates, pair transfer legs and retain original row references.
- [Fee & Break-even Planner](https://cryptoptimus.com/product/fee-break-even-planner/): Compare fee routes, total costs and the price needed to break even, using your own assumptions.
- [Transaction Preparation Sheet](https://cryptoptimus.com/product/transaction-preparation-sheet/): Gather network, destination and routing details with 12 authored preparation checklists.
- [Offer Warning Checklist](https://cryptoptimus.com/product/offer-warning-checklist/): Work through 40 warning prompts and keep observed facts separate from unanswered questions.
- [Network Fee Converter](https://cryptoptimus.com/product/network-fee-converter/): Convert your gas or virtual-size inputs into an explained fee estimate, with optional manual fiat conversion.
- [Crypto Concepts Map](https://cryptoptimus.com/product/crypto-concepts-map/): Search 120 definitions, explore 60 relationships and keep your own study cards.

## Optional

- [Agent (MCP protocol)](websites-agents.hostinger.com/cryptoptimus.com/mcp)

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