ihor

The current implementation of the set_approval_for_all method in the CEP-78 NFT standard does not behave as expected. Ideally, this method should allow for the approval of multiple operators, enabling token owners to list their tokens on multiple marketplaces. However, this is not currently possible with the CEP-78 standard, limiting it to exclusive listings.

The method only approves tokens owned at the time of the entry point call, and does not cover tokens acquired later. This is because it simply loops over all of the owner's tokens and approves them individually, making the operation very expensive in terms of gas usage. In fact, a warning in the comments next to the entry point advises developers to "DO NOT invoke this entrypoint unless absolutely necessary."

This unexpected behavior may also confuse dApp developers who are familiar with Ethereum's ERC-721 standard, potentially hurting the adoption of the Casper network.

To address these issues, we propose changing the set_approval_for_all impleme

ihor

CES as Casper ecosystem-wide standard

Events play a crucial role in the functioning and interactivity of decentralized applications (dApps) built on top of the blockchain. Events allow dApps to communicate and respond to changes in the blockchain state, making them a fundamental component of the overall blockchain ecosystem.

For example, events can be used to trigger a specific action or process when a certain condition is met, such as when an NFT token was transfered on the chain. This allows dApps to interact with the blockchain in real-time and provide users with instant feedback and updates.

Due to the absence of native events, developers of Casper dApps have resorted to workaround solutions to emulate events in deploy execution results. This involves creating distinctive WriteCLValue transforms that hold the event data, an approach commonly referred to as contract-level events.

When discussing contract-level events, the following aspects are of particular concern:

1. Cost overhead

ihor

[RFC-0002] Casper Event Standard Proposal

Author(s)	ihor@make.services, david.hernando@make.services
Status	Implemented in casper-event-standard
Created	2022-11-14
Updated	2023-02-01

This proposal describes a Casper Event Standard that could mitigate the lack of native events until they are implemented.

ihor

Sources used:
- https://github.com/CasperLabs/casper-node/blob/v1.5.0/resources/production/README.md
- https://docs.google.com/document/d/1YO_WnjPt2sGJgPB1jm_hVDHYULYsjPEAtkiAiY0e3-0/edit#
- https://docs.casperlabs.io/en/latest/node-operator/index.html
- Discord

[✓] 1. Create casperlabs-validator security group that exposes the following ports to public:
- 7777 - for http access to the status endpoint: http://<IP Address>:7777/status.
- 34553 - to gossip with other nodes

ihor

sudo su
wget http://rpms.famillecollet.com/enterprise/remi-release-6.rpm
sudo rpm -Uvh remi-release-6*.rpm
yum-config-manager --enable remi-php71

wget ftp://195.220.108.108/linux/epel/6/x86_64/scl-utils-20120229-1.el6.x86_64.rpm
rpm -Uvh scl-utils-20120229-1.el6.x86_64.rpm 

yum install php71 -y

ihor

# Modify /etc/yum.repos.d/epel.repo. Under the section marked [epel], change enabled=0 to enabled=1.

sudo yum install erlang --enablerepo=epel

wget http://www.rabbitmq.com/releases/rabbitmq-server/v3.1.1/rabbitmq-server-3.1.1-1.noarch.rpm

sudo rpm -Uvh rabbitmq-server-3.1.1-1.noarch.rpm

# Enable managament plugin
sudo rabbitmq-plugins enable rabbitmq_management

ihor

#!/bin/bash

DAEMON=/usr/local/sbin/rabbitmq-server
OPTS=''
NAME=rabbitmq
DESC=rabbitmq

test -x $DAEMON || exit 0
set -e

ihor

#!/bin/bash

DAEMON=/usr/local/bin/supervisord
OPTS='-c /usr/local/etc/supervisor/supervisord.conf'
NAME=supervisor
DESC=supervisor

test -x $DAEMON || exit 0
set -e

ihor

#!/bin/bash

DAEMON=/usr/local/bin/mongod
OPTS='run --config /usr/local/etc/mongo/mongod.conf'
NAME=mongodb
DESC=mongodb

test -x $DAEMON || exit 0
set -e

ihor

#!/bin/bash

DAEMON=/usr/local/bin/redis-server
OPTS=/usr/local/etc/redis/redis.conf
NAME=redis
DESC=redis

test -x $DAEMON || exit 0
set -e