OTC (.otc)
.otc file signature | application/vnd.oasis.opendocument.chart-template
Magic Bytes
Offset 0
50 4B
Sources: Apache Tika
Extension
.otc
MIME Type
application/vnd.oasis.opendocument.chart-template
Byte Offset
0
Risk Level
Safe
Validation Code
How to validate .otc files in Python
def is_otc(file_path: str) -> bool:
"""Check if file is a valid OTC by magic bytes."""
signature = bytes([0x50, 0x4B])
with open(file_path, "rb") as f:
return f.read(2) == signatureHow to validate .otc files in Node.js
function isOTC(buffer: Buffer): boolean {
const signature = Buffer.from([0x50, 0x4B]);
return buffer.subarray(0, 2).equals(signature);
}How to validate .otc files in Go
func IsOTC(data []byte) bool {
signature := []byte{0x50, 0x4B}
if len(data) < 2 {
return false
}
return bytes.Equal(data[:2], signature)
}API Endpoint
/api/v1/otc
curl https://filesignature.org/api/v1/otc
See the full API documentation for all endpoints and parameters.
Frequently Asked Questions
What is a .otc file?
A .otc file is a OTC file.
What are the magic bytes for .otc files?
The magic bytes for OTC files are 50 4B at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.
How do I validate a .otc file?
To validate a .otc file, read the first bytes of the file and compare them against the known magic bytes (50 4B) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.
What is the MIME type for .otc files?
The primary MIME type for .otc files is application/vnd.oasis.opendocument.chart-template.
Is it safe to open .otc files?
OTC (.otc) files are generally safe to open. They are classified as low risk because they primarily contain data rather than executable code. However, always ensure files come from a trusted source.