All Questions

The RPC (currently delphinet), allows you to query a contract's storage and big map key at a particular block id. GET ../<block_id>/context/big_maps/<big_map_id>/<script_expr> GET ....

On the Ethereum blockchain, there is a lot of talk about formal proofs and verification of smart contracts. In particular, ERC20 tokens and various exchange contracts will mention that they are ...

Good afternoon, Currently there is no tool to conveniently look work with Tezos addresses and convert from mneumonic to secret key, from encrypted to unencrypted. Iancoleman has created a great tool ...

Gas cost is an important topic in smart contract development. We want to maintain the costs as low as possible to allow for more operations in a block. There is a handy gas consumption reference, but ...

A little request to baking bad, or TezTech, or anyone else who wants to create this. I have a reqeust to have a mneumonic code coverter for bip39(tz1),Secp256k1(tz2), NIST P256(tz3) created, similar ...

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Is it possible to determine an upper bound for the (runtime) max stack depth that a given Michelson program will use? I'm thinking here in terms of static analysis of the program. So, 'given a ...

I'm trying to figure out how to withdraw money from the contract within a smartpy entrypoint, and test the result in my scenario. When I test the entrypoint: @sp.entry_point def withdraw(self, ...

Missed a block and saw the following error on the baker terminal window (Ubuntu) "Error Found no ledger corresponding to ledger://xxx..." This made me think that there might be a ...

Can you write verifiable code for ETH? if so what's special about Tezos in this respect, does it run faster, is writing the verifiable code faster?

This answer mentions an improved way for an oracle to provide random numbers to a contract. use commitments, i.e. the oracle would push a hash in the contract before the game, and send the random ...

I have a message send with tezos-client like: tezos-client sapling forge transaction 10 from alice to zet13Alicexxxxxx using sap --message 'test' How to get content of send message in shielded ...

The Michelson documentation for the Edo protocol mentions four new operations for tickets and this blog post has an example of how tickets are used. I see that the contract in that example can take a ...

The RPC for querying big maps mentions script_expr, but no where else in the Tezos Developer Documentation is it mentioned. What is script_expr? Where can developers learn more about it? What ...

I've delegated all my tezos from ICO using TezBox and at first everything was OK. But recently I had some problems with TezBox wallet and decided to install Galleon instead. I downloaded Galleon ...

Is Tezos similar to Bitcoin in that the more confirmations you wait, the more secure your transaction is? If so then how many confirmations is generally considered 'safe'?

i tried sending my funds from trezor Simple Staking wallet to the exchange, and it seems that the transaction is stuck. i tried many recommendations online such as increasing the transaction fee but ...

I was trying to send a transaction from my Trezor SimplyStaking wallet over 5 hours ago and seem to get an error. at the tzkt explorer, it says the following errors Status Branch refused Pre-...

My freshly started node using v8.1 is connected to two nodes using v8.1 and it gives me these messages for every new head: 2021-01-11 18:59:00.915 CET Jan 11 17:59:00.915 - prevalidator.NetXdQprcVkpa....

I've discovered that Liquidity, LigoLang and Ocamel Support Tezos development, but I've only found 1 resource that states that SmartPy supports only LigoLang. I wanted to use the right language to ...

I’ve been doing a lot of thinking about NFTs and was wondering how to go about creating a public provable burn address to send redeemed/needing to be removed from the useable Universe NFTs to?

I want to be able to verify that a signature is signed by a public key's address in my smart contract method on tezos. For example with solidity see: https://ethereum.stackexchange.com/questions/2171/...

const wallet = await this.getWallet(this.selectedNetwork); // get wallet using DAppClient... const Tezos = new TezosToolkit(this.config.rpc_endpoints[this.selectedNetwork]); Tezos.setProvider({ ...

I'm interested in translating the gas and storage costs I get in response from the node after an operation into XTZ prices. Where could I find this information online?

How do I get find the Tezos test net as opposed to the web browser smart py interface? Regards WF

Seeing the following warning in the node log node.validator: fetching protocol PtEdoTezd3RHSC31mpxxo1npxFjoWWcFgQtxapi51Z8TLu6v6Uq node running PsDELPH1 what's the issue? thx

Sorry in advanced, my english is not the best. but i have to try. Situation: I bought Tezos on the Binance App. Then i sent all the Tezos to my Wallet (ERC20 Wallet). Now its not showing on the wallet,...

I am trying to deploy a contract to delphinet with truffle. On a local sandbox the contract deploys just fine, but for the deployment on Delphi I am getting: proto.007-PsDELPH1.storage_exhausted....

I am trying to call FA-2.0 transfer entry point using tezos taquito, I have also gone through https://tezostaquito.io/docs/complex_parameters/. however I get the error below when I try to call ...

I am about to write some tests to verify some method functionality. The method functionality is quite simple: function checkAmount(const store : storage) : storage is block{ if Tezos.amount <= ...

After building native binaries of version 8 from source, running tezos-node gives me: Illegal instruction (core dumped) Since Rust is the new requirement for v8, I thought that maybe the Rust ...

i had some tezos removed by my baker (fresh tezos). Would this just be their annual fee? i always assumed they took their 15% before distributing xtz to my account. Why would they removed a large sum ...

I am trying to write tests for my contract, which stores an user as follows: type userData is record [ addressSet : set(bytes); storedAmount : tez; ] My storage is a big_map as ...

I am trying to un-delegate within galleon and I keep getting an error stating "Cannot Read Property 'signoperation' of null. I have increased the custom fee to .05 xtz and I have 1 xtz in my ...

How is the “Ledger Blake2b hash” calculated by the tezos-client and the Ledger? I can calculate the other hashes, but unable to figure out the “Ledger Blake2b hash”: Raw Script-expression-ID-Hash: ...

According to the help page for the tezos-node you can pass -vv to get logs at the debug level. I'm looking to see the request body, response, and status codes in the RPC logs but that information ...

I have a machine (A) running a Tezos node, with RPC port set to 8732. Its local IP is 192.168.1.200. I have another machine (B), from the same network, from which I'd like to connect to the RPC of A. ...

When reading operations from a block, implicit accounts and contracts are returned with a key bytes and in hexadecimal format. "parameters": { "entrypoint": "transfer"...

This item is listed in the change log for v8, "When the client asks for a password, it no longer tries to hide its input if the client was not run from a terminal, which allows for use in a ...

When running a Tezos node, is it possible to set up a subscription service so that you can be notified of transactions spending from, or interacting with a smart contract? For example, if you want ...

I am wondering how to effectively monitor for some given address for FA 1.2 and FA 2 token balance updates. Given that the entrypoints to the contract are defined, I'd like to write something which ...

When trying to check the transferred value is positive I get an error that TMutez is not TIntOrNat.: sp.verify(sp.amount > 0, "Amount should be positive")

I'm learning SmartPy and I'm trying to make a simple escrow contract. I read that contract.balance can be used to access the balance of a contract. In that case, how would I go about receiving XTZ to ...

I'm on macOS Catalina. I'm attempting to import a snapshot. It will import all of the data, but when cleaning up I encounter an error and the import doesn't finish. ./tezos-node snapshot import ~/...

My team and I just voted for Edo. We are on the list of voters; just with our address. We would like to appear there with the name of our organization as well as with the logo and the link which ...

I have a function like this @sp.entry_point def _verifySigPersonalSign(self,req,sig): sp.verify((req.deadline != sp.timestamp(0)) | (sp.now<=req.deadline), "request ...

I have Depected 9.5 XTZ into the address of TZ1 wallet and was recorded on the blockchain, but when I checked the balance in Tezbox wallet, I did not see the balance like picture. My TZ1: ...

req passed to _verifySigPersonalSign will be of type ERC import smartpy as sp ERC = sp.TRecord(sender=sp.TAddress,to=sp.TAddress,deadline=sp.TTimestamp) class StoreValue(sp.Contract): @sp....

According to this documentation: Roll snapshots represent the state of rolls for a given block. Roll snapshots are taken every BLOCKS_PER_ROLL_SNAPSHOT = 256 blocks, which is 16 times per cycle. ...

I am using the following formula and associated constants to calculate fees: https://tezos.gitlab.io/protocols/003_PsddFKi3.html#more-details-on-fees-and-cost-model Also referenced here: https://tezos....