S3 V3 Presigned GET requests - always adds X-Amz-Content-Sha256 · Issue #954 · aws/aws-sdk-php · GitHub
How does C # use R2 to generate pre signed urls to upload files? - General - Cloudflare Community
403 Forbidden on trying to put Key with signedUrl in v3 · Issue #1000 · aws/aws-sdk-js-v3 · GitHub
ruby - The authorization mechanism you have provided is not supported. Please use AWS4-HMAC-SHA256 - Stack Overflow
DevAudit/s3-upload-aws4.sh at master · sonatype-nexus-community/DevAudit · GitHub
AWS S3 upload using signature v4 · GitHub
How AWS S3 Requests Are Authenticated: HMAC-SHA256, by Shekhar
web services - AWS Upload file to S3 REST API - Missing required header for this request: x-amz-content-sha256 - Stack Overflow
Missing required header for this request: x-amz-content-sha256 · Issue #2138 · aws/aws-cli · GitHub
