Hodlberg ]-[ Financial - Tokenized Holdings

Frequently Asked Questions

Last Updated: September 23rd, 2021
  • What is this (tl;dr)?
  • Hodlberg ]-[ Financial lets one "attest" their cryptocurrency holdings and mint a Non-Fungible Token (NFT) on the Ethereum blockchain. The minted Hodlberg NFT aggregates all attested wallet balances into one convenient token, without compromising privacy. The balance and token data aggregated into your Hodlberg NFT is always up-to-date.
  • What is this?
  • Hodlberg ]-[ Financial is a system that allows one to "attest" their cryptocurrency holdings via Message Signing (meaning no funds are ever exchanged, held by Hodlberg, or at risk) and from those attested addresses, mint a Non-Fungible Token (NFT) on the Ethereum blockchain. This token aggregates all attested balances across multiple blockchains, supported associated ERC20s, and any held NFTs, in one convenient place. All underlying attested addresses are private – meaning never exposed to anyone other than the Hodlberg NFT holder (and Hodlberg). The NFT's tokenURI() method within its smart contract returns metadata that includes an aggregate balance and, if authorized, detailed underlying asset data. This data is live and always up to date. Hodlberg also comes with an API for Authorized Third-Parties to access non-public token data programmatically. The NFT can be integrated into a variety of other applications, all while keeping the underlying asset addresses private.
  • What is this not?
  • Hodlberg ]-[ Financial is non-custodial. This is not a yield token. There is no on-chain governance. There are no tokenomics, at least not intrisic to Hodlberg.
  • Why do I care?
  • Your Hodlberg NFT allows for some interesting possibilites. It's both informational and functional! Some examples:
    • A unique, evolving, in-game asset
    • Personal clout in social media
    • Under-collateralized loans
    • Net worth evaluations
    • An NFT of NFTs (more on that below)
    • Stuff we haven't thought of yet!
  • How much does this cost?
  • Hodlberg is completely free, for both token holders and third-party API users. However, minting a Hodlberg token is subject to Ethereum network fees, paid in "gas", from which Hodlberg does not profit.
  • Can I try this out without minting?
  • Yes. Before a token is minted and made permanent on the Ethereum blockchain, an unminted, "Temporary Token" is created. This token has certain limitations and will expire after 24 hours.
  • Gas prices are really high and minting an NFT is expensive. Why aren't you using a Layer 2 solution, and why should I bother to mint a token?
  • We feel your pain. Hopefully, it won't be like this forever, but we feel like minting a token and directly integrating with Mainnet is the right choice for the following reasons:
    • The Hodlberg NFT is immutable - While the metadata is generated by us, in order to keep things private, the Hodlberg NFT will live forever and is a part of the decentralized Internet
    • Everything rolls up into Layer 1 Mainnet eventually - It’s far easier to add compatibility and interoperability with Layer 2s and side-chains if you’re starting from the top
    • Integrating directly with Layer 1 means universal compatibility - The NFT is 100% native - no new blockchain APIs to learn or integrate for developers
    • Ensures compatibility with PoS once it’s time
    • Minted Hodlberg NFTs have perks - To start, the visual representation of the NFT is different than what you get on Testnet or as a Temporary Token
    • NFT market exposure - We’re not sure how this might be useful, but it exists, as your token will be viewable on OpenSea (or any other NFT marketplace)
    • The Hodlberg NFT can be traded or sold - Again, we’re not sure why one would want to do this (the underlying attested assets don’t move with the Hodlberg Token Holder’s wallet), but because it’s a native ERC721 and follows the token standard, do what you will!
  • How safe is this?
  • Completely! There is no financial risk involved whatsoever. Hodlberg doesn't hold any of your funds, has no ability to transfer funds at any point, and has no personally identifiable information should our database become compromised. Please read more about our privacy measures here.
  • How does the privacy work?
  • Wallets need be attested only once. Hodlberg stores the public address off-chain so we can always have an up-to-date balance for your Hodlberg NFT, but we never expose that public address to anyone, other than you. We highly encourage the Hodlberg Token to be minted to a brand-new wallet, without any association to other wallets you have. Doing so will ensure that there is no chain-analysis audit trail for a third-party to follow to discover your identity. Read more about our Privacy Policy and how we keep your data safe.
  • What cryptocurrencies do you support?
  • Ethereum, Bitcoin, Litecoin, Dogecoin, and ERC20s
  • What ERC20s do you support?
  • Hodlberg supports most of the top ERC20s. Click to see the list.
    • $BASED - Based Money
    • 1INCH - 1inch
    • 1ST - FirstBlood
    • AAVE - Aave
    • ACH - Alchemy Pay
    • ADAI - Aave DAI
    • ADX - AdEx
    • AE - Aeternity
    • AETH - ankrETH
    • AGI - SingularityNET
    • AKRO - Akropolis
    • ALBT - AllianceBlock
    • ALEPH - Aleph.im
    • ALINK - Aave LINK
    • ALPHA - Alpha Finance
    • AMP - Amp
    • AMPL - Ampleforth
    • ANKR - Ankr
    • ANT - Aragon
    • API3 - API3
    • APY - APY.Finance
    • ARMOR - ARMOR
    • ARPA - ARPA Chain
    • AST - AirSwap
    • ATUSD - Aave TUSD
    • AUDIO - Audius
    • AUSDC - Aave USDC
    • AXN - Axion
    • AXS - Axie Infinity
    • AZUKI - Azuki
    • BAC - Basis Cash
    • BACON - BaconSwap
    • BADGER - Badger DAO
    • BAL - Balancer
    • BAND - Band Protocol
    • BAO - Bao Finance
    • BAS - Basis Share
    • BAT - Basic Attention Token
    • BEL - Bella Protocol
    • BLZ - Bluzelle
    • BNSD - BNSD Finance
    • BNT - Bancor Network Token
    • BOA - BOSAGORA
    • BOND - BarnBridge
    • BONDLY - Bondly
    • BOOST - Boosted Finance
    • BOR - BoringDAO
    • BOT - Bounce
    • BSD - Basis Dollar
    • BSDS - Basis Dollar Share
    • BTMX - Bitmax Token
    • BTU - BTU Protocol
    • BUILD - BUILD Finance
    • BUSD - Binance USD
    • BZRX - bZx Protocol
    • C20 - CRYPTO20
    • CBAT - cBAT
    • CC10 - Cryptocurrency Top 10 Tokens Index
    • CDAI - cDAI
    • CEL - Celsius Network
    • CELR - Celer Network
    • CETH - cETH
    • CHERRY - Cherry
    • CHSB - SwissBorg
    • CHZ - Chiliz
    • CND - Cindicator
    • COCOS - COCOS BCX
    • COFI - CoFiX
    • COIN - Coin Artist
    • COL - Unit Protocol
    • COMBO - Furucombo
    • COMP - Compound
    • CORE - cVault.finance
    • COVER - Cover Protocol
    • COW - Cowboy.Finance
    • CRE - Carry
    • CREAM - Cream
    • CRETH2 - Cream ETH 2
    • CRO - Crypto.com Coin
    • CRV - Curve DAO Token
    • CTSI - Cartesi
    • CUNI - cUNI
    • CUSDC - cUSDC
    • CUSDT - cUSDT
    • CVC - Civic
    • CVP - PowerPool Concentrated Voting Power
    • CZRX - c0x
    • DAI - Dai
    • DAIQ - Daiquilibrium
    • DATA - Streamr DATAcoin
    • DDIM - DuckDaoDime
    • DDX - DerivaDAO
    • DEBASE - Debase
    • DEFI5 - DEFI Top 5 Tokens Index
    • DEFLCT - Deflect
    • DENT - Dent
    • DEUS - DEUS Finance
    • DEXT - DexTools
    • DF - dForce Token
    • DFT - DeFiat
    • DHT - dHEDGE DAO
    • DIA - DIA
    • DIE - Die
    • DIGG - DIGG
    • DIP - Etherisc DIP Token
    • DNT - district0x
    • DODO - DODO
    • DOKI - Doki Doki Finance
    • DOUGH - PieDAO DOUGH v2
    • DPI - DeFiPulse Index
    • DRC - Dracula Token
    • DRGN - Dragonchain
    • DSD - Dynamic Set Dollar
    • DUCK - DLP Duck Token
    • DUSK - DUSK Network
    • EASY - EasyFi
    • ELF - elf
    • ELG - Escoin Token
    • ENJ - Enjin Coin
    • ERSDL - UnFederalReserve
    • ESD - Empty Set Dollar
    • EURS - STASIS EURO
    • EXRD - e-Radix
    • FARM - Harvest Finance
    • FET - Fetch.ai
    • FORTH - Ampleforth Governance Token
    • FRAX - Frax
    • FRM - Ferrum Network
    • FTM - Fantom
    • FTT - FTX Token
    • FUN - FunFair
    • FXS - Frax Share
    • GALA - Gala
    • GEM - Cargo Gems
    • GLM - Golem
    • GNO - Gnosis
    • GRO - GROWTH DeFi
    • GRT - The Graph
    • GSWAP - Gameswap
    • GT - GateToken
    • GTC - Gitcoin
    • GUSD - Gemini Dollar
    • GYSR - Geyser
    • HBTC - Huobi BTC
    • HEGIC - Hegic
    • HOT - Holo
    • HOUSE - Toast.finance
    • HT - Huobi Token
    • HUSD - HUSD
    • HXRO - Hxro
    • HYN - Hyperion
    • ICHI - ichi.farm
    • IDEX - IDEX
    • IDLE - IDLE
    • INDEX - Index Cooperative
    • INJ - Injective Protocol
    • IYF - IYF.finance
    • JIAOZI - Jiaozi
    • JUL - JustLiquidity
    • JULIEN - JULIEN
    • KAI - KardiaChain
    • KARMA - Karma DAO
    • KBOND - Klondike Bond
    • KBTC - Klondike BTC
    • KCS - KuCoin Token
    • KEEP - Keep Network
    • KIMCHI - KIMCHI.finance
    • KLON - Klondike Finance
    • KNC - Kyber Network
    • KP3R - Keep3rV1
    • L2 - Leverj Gluon
    • LAMB - Lambda
    • LEND - Aave [OLD]
    • LEO - LEO Token
    • LGCY - LGCY Network
    • LGO - LGO Token
    • LINA - Linear
    • LINK - Chainlink
    • LIT - Litentry
    • LON - Tokenlon
    • LOOM - Loom Network
    • LPT - Livepeer
    • LRC - Loopring
    • LTO - LTO Network
    • LUA - Lua Token
    • MANA - Decentraland
    • MARK - Benchmark Protocol
    • MATH - MATH
    • MATIC - Matic Network
    • MEGA - MegaCryptoPolis
    • MEME - Meme
    • MET - Metronome
    • MFT - Mainframe
    • MIR - Mirror Protocol
    • MIS - Mithril Share
    • MKR - Maker
    • MLN - Enzyme
    • MOON - MoonSwap
    • MORK - MORK
    • MPH - 88mph
    • MRPH - Morpheus Network
    • MTA - Meta
    • MTL - Metal
    • MUSD - mStable USD
    • MUST - Must
    • MX - MX Token
    • MXC - MXC
    • NDR - Node Runners
    • NEST - Nest Protocol
    • NEXO - NEXO
    • NFTX - NFTX
    • NKN - NKN
    • NMR - Numeraire
    • NOIA - Syntropy
    • NOODLE - NOODLE.Finance
    • NPXS - Pundi X
    • NU - NuCypher
    • NXM - Nexus Mutual
    • NYAN - Nyan Finance
    • OCEAN - Ocean Protocol
    • OCTO - OctoFi
    • OGN - Origin Protocol
    • OKB - OKB
    • OM - MANTRA DAO
    • OMG - OMG Network
    • OPIUM - Opium
    • ORAI - Oraichain Token
    • ORBS - Orbs
    • ORN - Orion Protocol
    • OXT - Orchid Protocol
    • PAID - PAID Network
    • PASTA - Spaghetti
    • PAX - Paxos Standard
    • PAXG - PAX Gold
    • PCT - Percent
    • PEAK - PEAKDEFI
    • PERP - Perpetual Protocol
    • PHA - Phala Network
    • PICKLE - Pickle Finance
    • PIPT - Baby Power Index Pool Token
    • PLA - PlayDapp
    • PNK - Kleros
    • PNT - pNetwork
    • POLS - Polkastarter
    • POLY - Polymath Network
    • POND - Marlin
    • POWR - Power Ledger
    • PPT - Populous
    • PRE - Presearch
    • PROM - Prometeus
    • PRQ - PARSIQ
    • PYLON - Pylon Finance
    • QKC - QuarkChain
    • QNT - Quant
    • QSP - Quantstamp
    • RAI - Rai Reflex Index
    • RAMP - RAMP
    • RARI - Rarible
    • RBC - Rubic
    • RCN - Ripio Credit Network
    • REN - REN
    • RENBTC - renBTC
    • REP - Augur
    • REPV2 - Augur
    • REQ - Request
    • RFOX - RedFOX Labs
    • RGT - Rari Governance Token
    • RING - Darwinia Network Native Token
    • RLC - iExec RLC
    • RLY - Rally
    • ROOK - KeeperDAO
    • ROOM - OptionRoom
    • ROOT - Rootkit
    • ROT - Rotten
    • RPL - Rocket Pool
    • RSPT - Rari Stable Pool Token
    • RSR - Reserve Rights Token
    • RUNE - THORChain (ERC20)
    • SAC - Stand Cash
    • SAI - Sai
    • SALT - SALT
    • SAND - SAND
    • SAS - Stand Share
    • SASHIMI - Sashimi
    • SBTC - sBTC
    • SDT - Stake DAO
    • SEAL - Seal Finance
    • SETH - sETH
    • SEUR - sEUR
    • SFI - saffron.finance
    • SHR - ShareToken
    • SHRIMP - Shrimp Finance
    • SHROOM - Shroom.Finance
    • SKL - SKALE
    • SLP - Smooth Love Potion
    • SNL - Sport and Leisure
    • SNOW - Snowswap
    • SNT - Status
    • SNX - Synthetix Network Token
    • SOLARITE - Solarite
    • SOLVE - SOLVE
    • SPANK - SpankChain
    • SPI - Shopping.io
    • SRM - Serum
    • STACY - Stacy
    • STAKE - xDAI Stake
    • STBZ - Stabilize
    • STETH - StakeHound Staked Ether
    • STMX - StormX
    • STORJ - Storj
    • STPT - STP Network
    • STX - Stox
    • SUSD - sUSD
    • SUSHI - Sushi
    • SVCS - GivingToServices
    • SWAG - SWAG Finance
    • SWAP - Trustswap
    • SWRV - Swerve
    • SWSH - SwapShip
    • SXP - Swipe
    • SYFI - Soft Yearn
    • TBTC - tBTC
    • TEL - Telcoin
    • TITAN - TitanSwap
    • TON - Tokamak Network
    • TRAC - OriginTrail
    • TRB - Tellor
    • TRU - TrueFi
    • TUSD - TrueUSD
    • TXL - Tixl
    • UBT - Unibright
    • ULT - Ultiledger
    • UMA - UMA
    • UNI - Uniswap
    • UNISTAKE - Unistake
    • UOS - Ultra
    • UQC - Uquid Coin
    • USDC - USD Coin
    • USDK - USDK
    • USDN - Neutrino USD
    • USDP - USDP Stablecoin
    • USDT - Tether
    • UST - TerraUSD
    • UTK - UTRUST
    • VAL - Sora Validator Token
    • VALUE - Value Liquidity
    • VERI - Veritaseum
    • VGX - Voyager Token
    • VIDT - VIDT Datalink
    • WBTC - Wrapped Bitcoin
    • WHALE - WHALE
    • WHITE - Whiteheart
    • WNXM - Wrapped NXM
    • WOZX - Efforce
    • WTF - Walnut.finance
    • XAAVEA - xAAVEa
    • XAAVEB - xAAVEb
    • XAUT - Tether Gold
    • XBASE - Eterbase Utility Token
    • XCM - CoinMetro
    • XOR - Sora
    • XRT - Robonomics Network
    • YAM - YAM
    • YAMV2 - YAM v2
    • YAX - yAxis
    • YCC - Yuan Chain Coin
    • YELD - Yeld Finance
    • YFFI - yffi finance
    • YFI - yearn.finance
    • YFII - DFI.money
    • YFL - YF Link
    • YIELDX - YieldX
    • YLD - YIELD App
    • YVAULT-LP-YCURVE - yUSD
    • ZAI - Zero Collateral Dai
    • ZAP - Zap
    • ZB - ZB Token
    • ZCN - 0chain
    • ZKS - ZKSwap
    • ZOM - ZOM
    • ZOMBIE - Zombie.Finance
    • ZRX - 0x
    • ZZZ - zzz.finance
  • Can you add coin/token _____?
  • ERC20s are easy, just let us know. Coins are harder. If there's a legitimate currency you'd like to see Hodlberg support, please get in touch and we'll see what we can do.
  • Do you support centralized exchanges?
  • At the moment, we support Coinbase.
  • If I add my Coinbase account, do you bring in all balances for every coin?
  • Yes. If you hold a coin/balance on Coinbase, it will become part of your aggregate balance and Hodlberg NFT metadata.
  • Can I have more than one Hodlberg NFT?
  • Yes!
  • I own a bunch of other NFTs that are worth big bucks! Are those part of my token's balance?
  • Yes! If they've ever sold on OpenSea, the sale price will be reflected in the aggregate balance.
  • What if my NFT has never sold?
  • The NFT will still be part of the Hodlberg NFT, along with all its metadata, but will be valued at 0.
  • I want to see my balance valued in ETH (or BTC or GBP). Do you support that?
  • Yes! Add ?currency=ETH to the end of the URL where you view your token. We support conversion to just about everything.
  • What happens if you get hacked?
  • That would suck! It would probably mean token balances accessed via the site or the API would most likely stop working until we got things up and running again. The good news is there's no personally identifiable information in our database that could cause any damage to you. Other than hackers knowing a certain token is comprised of certain addresses... that's about it. Please read more about our privacy measures here.
  • What is Message Signing?
  • Message Signing is the cryptographic process to prove control over a given Public Address. No funds are exchanged, and verification happens instantly.
  • Did you follow the ERC721 standard?
  • Of course!
  • What if I want to delete my token?
  • Your NFT is available to be "burned" by you, the token holder, though Hodlberg does not offer a UI to do so.
  • If I burn my token, will that release the underlying attested addresses or Coinbase account so I can use them again in a different token?
  • No.
  • Is Hodlberg fully decentralized?
  • No. Your Hodlberg NFT exists on the blockchain and is owned by you, however the metadata behind your NFT is generated in real-time by Hodlberg's servers. In order to keep the underlying attested addresses private, this data cannot live on the blockchain. Read more about how we keep your data safe here.
  • What if I want to remove an already attested address from a token and use those underlying funds for a different token?
  • This is not possible. The only solution would be to move the underlying funds to a different address.
  • What's a Challenge Token?
  • A Challenge Token is a token snapshot (meaning the balance will not update once the Challenge Token is generated) that lives for 24hours and has some additional custom text added to its face and metadata. A unique URL will be created to access this token, or one can download the token image directly. A Challenge Token can be useful when attempting to convince non-technical others one is actually in control of a Hodlberg NFT.
  • What is Fuzzing?
  • Because block explorers offer easy access to looking up addresses and balances, if a token is being viewed by the public or an Authorized Third-Party and the token owner has not changed the default settings, all balances (aggregate and for individual coins/tokens) will be "fuzzed." That is, a small, random percentage will be added to the coin/token amount so that one cannot go looking for an exact match in a block explorer to determine the token holder's underlying address. Fuzzing can be disabled for authorized third-parties by the token holder, and when viewing one's own token on Hodlberg, fuzzing is never applied. Challenge Tokens are always fuzzed. If the underlying asset amount changes, the small, random fuzz percentage changes as well.
  • What kind of control do I have over what an Authorized Third-Party sees?
  • A token holder can, via the Hodlberg UI, turn on or off fuzzing globally, hide amounts of a particular coin/token (balance and quantity held), or hide individual coins/tokens completely. A token holder can also revoke access from an Authorized Third-Party at any moment, reverting that third-party to the public view of the token.
  • What kind of control do I have over what an Authorized Third-Party sees when it comes to my owned NFTs?
  • A token holder can, via the Hodlberg UI, make individual NFTs within a collection visible, allow visibility into overall collection information (number of NFTs held in that collection and aggregate balance), only show the number of NFTs held in a given collection, or turn access off completely.
  • If I disable access to a certain coin/token, will it affect my aggregate balance?
  • No. The disabled coin or token's balance will still contribute to the overall total, but will not be broken out.
  • From where are you getting the coin price data?
  • Coingecko
  • How often do you update the price data?
  • Every minute.
  • Why does my token say it's "unminted"?
  • Creating a token on Hodlberg is free. This "unminted" token is temporary and not an NFT. One can tell a token is unminted by the indicator on the token face. Minting a newly created token will turn it into an NFT, wholly owned by you, and render it permanent.
  • How long does an unminted, Temporary Token last?
  • 24 hours
  • What happens to my unminted, Temporary Token when it expires?
  • It is deleted, and all underlying attested addresses and connected centralized exchange accounts are released. You can use these addresses or accounts again to create a new token.
  • Why can't I use an address or account more than once?
  • If one could attest the same address multiple times, then there would be no limit to the balances attributed to minted tokens. Even if a token is deleted, underlying attested addresses are bound to that token forever.
  • What data does the public see?
    • Ethereum Owner Address
    • Token ID
    • Balance (fuzzed)
    • Last Updated Date
    • Audit Signatures
    • If the token is an unminted, Temporary Token
    • If the token belongs to the original owner
    • Challenge Text (optional)
    See how this is all laid out at Anatomy of a Token
  • What data does an Authorized Third-Party see?
    • Number of underlying asset addresses
    • If a Centralized Exchange has been attested
    In addition to the "public" data, the NFT holder has the option to grant access to additional data points:
    • Coin/Token names and symbols held
    • Coin/Token balances
    • Coin/Token amounts
    • NFT collection name
    • NFT collection amount of held tokens
    • NFT metadata (image url, Open Sea link, token name, token collection)
  • What data does the API return?
  • In addition to the "public" data, the API contains many extra fields that might be useful:
    • Token Mint Date
    • Image URL
    • Balance data as both a String and Number
  • If I'm viewing my own token on Hodlberg after signing in, what data so I see?
  • In addition to the "public" data, the "Reveal Data" button will also display:
    • Token Secret - used for generating the Asset Signature and in Asset Auditing
    • Underlying Asset Addresses
    • An "authorized" flag
  • Are Challenge Tokens available to be viewed or created via the API?
  • No.
  • Are unminted tokens available to be viewed via the API?
  • No.
  • Can I create a Challenge Token from an unminted token?
  • No.
  • What if I lose access to the wallet holding my token?
  • You can always mint a new one, but any underlying address won't be usable in a new attestation. You'll need to move your funds to new addresses to use them again. The one exception is an attested Centralized Exchange account, like Coinbase. Please visit this page to learn how to remove your connected account from your NFT.
  • What if I lose access to the underlying attested asset?
  • Hodlberg cannot help with this.
  • Are you on Twitter?
  • Yes: @hodlberg
  • Can I sell my token?
  • There's nothing stopping anyone from selling/trading their minted NFT, but addresses used in attestation can only be used ONCE and there's no guarantee someone isn't going to rug pull you since they always control the underlying attested asset. The token does have an indicator if it belongs to the original owner, both in the dynamically generated graphics and in the returned JSON metadata when using the API, so third-party sites can do with that info what they will.
  • What is "adding" to a token?
  • Once a token is created as an unminted, Temporary Token, or minted permanently as an NFT, it can have more addresses attested to increase its balance. This is free and can happen at any time.
  • What is an Asset Audit?
  • Hodlberg will generate a hash, compromised of all underlying attested addresses for a token, plus your "asset secret," a randomly generated value akin to a salt. This hash appears on the left side of every token image and in the metadata. Hodlberg provides a tool to make sure the hash matches what Hodlberg generates. Since Hodlberg has to know the underlying asset addresses to generate the hash (and calculate balances), one can know that Hodlberg is not manipulating underlying data.
  • What is a Token Audit?
  • Hodlberg will generate a signed message every time a token is viewed, comprised of the data on the "face" of the token, including the aforementioned hash from the Asset Audit, signed with the Hodlberg private key corresponding to the Hodlberg instance (Mainnet or Testnet). This message appears on the right side of every token image and in the metadata. Hodlberg provides a tool to make sure the message matches what Hodlberg generates. In this way, one can be sure a token image hasn't been photoshopped or manipulated, and that all underlying metadata is also genuinely from Hodlberg.
  • Since this isn't fully decentralized, how do I know Hodlberg isn't manipulating the balances?
  • This is what the Asset Audit and Token Audit are for! We encourage you to create a token, then, using the Asset Audit and Token Audit tools, see for yourself that the generated signature and balances are valid. Trust, but verify!
  • Can I view my token on OpenSea?
  • Yup!
  • What's a Site Key?
  • Third-Party Authorized sites have two ways to be granted access to a Hodlberg NFT holder's private token data:
    1. On-site (on the third-party's site) authentication via the Hodlberg API
    2. Token-holder controlled access via Site Key
    Every third-party site has a Site Key, a unique code, that a token holder can use to grant access to a site from Hodlberg's user interface. To effectively add a third-party as an authorized viewing of one's token, a holder must know both the Site Key and their user ID for the given site. More information is available in our API documentation.
  • I'm interested in working with your API. Where is the documentation?
  • Here
  • Is the API free?
  • Yes! For now.
  • How do I become an Authorized Third-Party?
  • Click here or, if you're on desktop, click the ]-[ in the top-right of the site and then pick "login." If you're on mobile, open the hamburger and select "login" from there.
  • How can I test all of this?
  • Switch to Testnet (Rinkeby) by either visiting testnet.hodlberg.com or, if you're on desktop, click the ]-[ in the top-right of the site and then pick "Switch to Testnet" If you're on mobile, open the hamburger and select "Switch to Testnet" from there.
  • How does Testnet functionality differ from Mainnet?
    • Balances are capped at $100 per coin - quantities held are adjusted
    • ETH is priced at $1
    • ERC20s are not available
    • Balances for ETH addresses pull from Rinkeby
    • Balances for BTC, LTC, and Dogecoin addresses pull from their respective Mainnet
    • NFTs pull from Rinkeby
    • Addresses and accounts (like Coinbase) used for attestation can be re-used on Mainnet
    • Tokens will have the testnet "T" designator visible
    • Token visual design is set to Testnet
  • Something went wrong with my experience... can you help?
  • Yes! Please reach out and we'll try to make it right.
  • Where are your smart contracts?
  • Mainnet
    Testnet
  • You didn't answer my question... now what?
  • Contact us!