21.0.0

Release notes

This is the first release of Soroban environment supporting protocol 21.

New features in protocol 21

• Secp256r1 support in Soroban host: https://github.com/stellar/stellar-protocol/blob/master/core/cap-0051.md
• Host function for extending TTL of contract instance and code separately: https://github.com/stellar/stellar-protocol/blob/master/core/cap-0053.md
• Use refined cost model for VM instantiation in order to reduce the VM instantiation metered costs: https://github.com/stellar/stellar-protocol/blob/master/core/cap-0054.md
• Intra-transaction VM module caching for the further Soroban cost reduction: https://github.com/stellar/stellar-protocol/blob/master/core/cap-0055.md, https://github.com/stellar/stellar-protocol/blob/master/core/cap-0056.md

What's Changed

• Bump XDR dependency for write fee in LCM by @dmkozh in #1366
• Bump XDR used by env by @dmkozh in #1367
• Decompose VM instantiation costs and add module cache by @graydon in #1359
• Proposal: Allow Extending Instance and Code TTL With Separate Values on the Host Environment For More Cost-Efficient Implementations by @heytdep in #1368
• Refactor extend {code, instance} TTL by @jayz22 in #1373
• Module cache followup by @graydon in #1375
• Add secp256r1 host function for signature verification by @jayz22 in #1376
• Charge for BTreeSet by @jayz22 in #1381
• Module cache upload and run by @graydon in #1382
• Protocol-version-qualify test observations by @graydon in #1383
• Reuse hash method in metered_hash_xdr by @jayz22 in #1385
• Set dep versions to what is used in core by @sisuresh in #1387
• Observe xdr by @graydon in #1386
• Pass bucket list size to simulation as a side input. by @dmkozh in #1389
• Protocol 21 by @graydon in #1384
• Multi-protocol support for E2E host and simulation tests. by @dmkozh in #1377
• Package version 21 by @graydon in #1394
• Update dev xdr hash by @jayz22 in #1400
• Improvements for recording mode metering of module cache by @dmkozh in #1401
• Update xdr hash by @jayz22 in #1403
• Add e2e test for custom account authorization. by @dmkozh in #1404
• Extend cost params in simulation in order to match the hardcoded value. by @dmkozh in #1405
• Use the released 21.0.0 XDR. by @dmkozh in #1406

Full Changelog: v20.3.0...v21.0.0