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bc0c698692
- Updates MPT Concept docs with metadata schema - Updates issue-mpt-with-metdata example code with new schema changes.
83 lines
2.7 KiB
Python
83 lines
2.7 KiB
Python
import json
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from xrpl.utils import str_to_hex, hex_to_str
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from xrpl.clients import JsonRpcClient
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from xrpl.wallet import generate_faucet_wallet
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from xrpl.transaction import submit_and_wait
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from xrpl.models import LedgerEntry, MPTokenIssuanceCreate, MPTokenIssuanceCreateFlag
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# Set up client and get a wallet
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client = JsonRpcClient("https://s.devnet.rippletest.net:51234")
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print("Funding new wallet from faucet...")
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wallet = generate_faucet_wallet(client, debug=True)
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# Define metadata as JSON
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mpt_metadata = {
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"t": "TBILL",
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"n": "T-Bill Yield Token",
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"d": "A yield-bearing stablecoin backed by short-term U.S. Treasuries and money market instruments.",
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"i": "example.org/tbill-icon.png",
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"ac": "rwa",
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"as": "treasury",
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"in": "Example Yield Co.",
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"us": [
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{
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"u": "exampleyield.co/tbill",
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"c": "website",
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"t": "Product Page"
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},
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{
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"u": "exampleyield.co/docs",
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"c": "docs",
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"t": "Yield Token Docs"
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}
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],
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"ai": {
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"interest_rate": "5.00%",
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"interest_type": "variable",
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"yield_source": "U.S. Treasury Bills",
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"maturity_date": "2045-06-30",
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"cusip": "912796RX0"
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}
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}
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# Convert JSON to a string (without excess whitespace), then string to hex
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mpt_metadata_string = json.dumps(mpt_metadata, separators=(',', ':'))
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mpt_metadata_hex = str_to_hex(mpt_metadata_string)
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# Define the transaction, including other MPT parameters
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mpt_issuance_create = MPTokenIssuanceCreate(
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account=wallet.address,
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asset_scale=4,
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maximum_amount="50000000",
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transfer_fee=0,
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flags=MPTokenIssuanceCreateFlag.TF_MPT_CAN_TRANSFER |
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MPTokenIssuanceCreateFlag.TF_MPT_CAN_TRADE,
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mptoken_metadata=mpt_metadata_hex
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)
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# Prepare, sign, and submit the transaction
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print("Sending MPTokenIssuanceCreate transaction...")
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response = submit_and_wait(mpt_issuance_create, client, wallet, autofill=True)
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print(json.dumps(response.result, indent=2))
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# Check transaction results
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result_code = response.result["meta"]["TransactionResult"]
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if result_code != "tesSUCCESS":
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print(f"Transaction failed with result code {result_code}")
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exit(1)
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issuance_id = response.result["meta"]["mpt_issuance_id"]
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print(f"MPToken successfully created with issuance ID {issuance_id}")
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# Look up MPT Issuance entry in the validated ledger
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print("Confirming MPT Issuance metadata in the validated ledger.")
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ledger_entry_response = client.request(LedgerEntry(
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mpt_issuance=issuance_id,
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ledger_index="validated"
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))
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# Decode the metadata
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metadata_blob = ledger_entry_response.result["node"]["MPTokenMetadata"]
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decoded_metadata = json.loads(hex_to_str(metadata_blob))
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print("Decoded metadata:", decoded_metadata)
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