Hedera
Fleeting- External reference: https://hedera.com/
hbars
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External reference: https://docs.hedera.com/hedera/sdks-and-apis/deprecated/sdks/hbars
Denominations Abbreviations Amount of HBAR Cryptocurrency gigabar 1 Gℏ = 1,000,000,000 ℏ megabar 1 Mℏ = 1,000,000 ℏ kilobar 1 Kℏ = 1,000 ℏ hbar 1 ℏ = 1 ℏ millibar 1,000 mℏ = 1 ℏ microbar 1,000,000 μℏ = 1 ℏ tinybar 100,000,000 tℏ = 1 ℏ
Function Description HbarUnit.Tinybar The atomic (smallest) unit of hbar, used natively by the Hedera network HbarUnit.Microbar Equivalent to 100 tinybar or 1⁄1,000,000 hbar. HbarUnit.Millibar Equivalent to 100,000 tinybar or 1⁄1,000 hbar HbarUnit.Hbar The base unit of hbar, equivalent to 100 million tinybar. HbarUnit.Kilobar Equivalent to 1 thousand hbar or 100 billion tinybar.HbarUnit.Megabar HbarUnit.Megabar Equivalent to 1 million hbar or 100 trillion tinybar. HbarUnit.Gigabar Equivalent to 1 billion hbar or 100 quadrillion tinybar. — https://docs.hedera.com/hedera/sdks-and-apis/deprecated/sdks/hbars#hbar-to
Hedera Consensus Service
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External reference: https://hedera.com/consensus-service
Verifiable time-stamping and ordering of events for any web2 or web3 application
Hedera File Service
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External reference: https://docs.hedera.com/hedera/sdks-and-apis/sdks/file-service/create-a-file
The maximum file size is 1,024 kB.
— https://docs.hedera.com/hedera/sdks-and-apis/sdks/file-service/create-a-file
Hedera Smart Contract Service
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External reference: https://hedera.com/smart-contract
Build decentralized applications using Solidity and the most ubiquitous EVM tooling, libraries, and environments
Hedera Token Service
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External reference: https://hedera.com/token-service
Configure, mint, and manage native fungible and non-fungible tokens on the Hedera network
account creation
either ecdsa or eddsa
a single account cannot have two sets of keys due to the underlying cryptography
— https://www.devgem.io/posts/how-to-use-both-ed25519-and-ecdsa-keys-for-a-single-account-on-hedera
creation
sending some hbar to an evm address is enough to have an account created and activated.
link between evm and hedera
the EVM address is an alias of the account ID.
— https://docs.hedera.com/hedera/tutorials/hello-world/create-fund-account
local node
- External reference: https://docs.hedera.com/hedera/tutorials/more-tutorials/how-to-set-up-a-hedera-local-node
three public networks
mainnet
testnet
previewnet
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External reference: https://help.hedera.com/hc/en-us/articles/360012117338-What-is-the-Hedera-Previewnet#breadcrumb
second testnet — the “previewnet” — which would run a development version of the Hedera codebase.
— https://help.hedera.com/hc/en-us/articles/360012117338-What-is-the-Hedera-Previewnet#breadcrumb
previewnet is designed to offer developers in the Hedera community early exposure to features coming down the pipe. It’s not always stable and accounts / data are likely to be lost when the network codebase is upgraded.
— https://help.hedera.com/hc/en-us/articles/360012117338-What-is-the-Hedera-Previewnet#breadcrumb
HBAR (ℏ)
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External reference: https://hedera.com/hbar
HBAR is the native, energy-efficient cryptocurrency of the public Hedera network
does not work in deno
const { Client } = await import("npm:@hashgraph/sdk");
const client = Client.forTestnet()
> Warning: Not implemented: Http2Session.socket
{"grpc-status": "0"}
See https://github.com/denoland/deno/issues/20903