UUID Timestamp & MAC Extractor
UUID Timestamp & MAC Extractor: Reconstructs 60-bit 100-nanosecond timestamp count since Oct 15, 1582 and extracts 48-bit MAC node address.
About this uuid timestamp & mac extractor
UUID Timestamp & MAC Extractor — browser-based utility.
How this tool works
Implements client-side UUID Timestamp & MAC Extractor operations. Reconstructs 60-bit 100-nanosecond timestamp count since Oct 15, 1582 and extracts 48-bit MAC node address specifically designed for a database administrator extracts creation timestamp and mac node identifier from a uuidv1 identifier.
- Stream Byte Decoding: Converts input text into UTF-8 binary octet arrays via native TextEncoder / Uint8Array APIs.
- Bit Manipulation & Sextet Packing: Slices binary byte streams into 6-bit chunks, translating them against Base64 index lookup tables.
- Lempel-Ziv / Huffman Encoding: Applies LZ77 sliding-window dictionary compression and Huffman trees for DEFLATE/GZIP payloads.
- Integrity Verification: Validates complete round-trip reversibility, verifying that decoded bytes match original inputs byte-for-byte.
Worked example
Scenario: Inspect a canonical version-4 UUID without inventing time or node data.
Sample input:
Processing: Parse five hexadecimal groups, identify version and variant, then derive time only for v1 or v7.
Illustrative output:
Limits and verification
Rejects malformed Base64 containing invalid characters or incorrect padding lengths. In URL decoding, rejects incomplete or truncated percent sequences (such as '%2' or '%ZZ').
Examples demonstrate an expected workflow; they do not prove every input or every branch of an external specification. Check important results with an independent source before using them for money, security, compliance, safety, or irreversible file changes.
Browser processing boundary
Tool input is processed by code running in the browser and is not intentionally sent to a CZOA processing API. The page can still request ordinary site assets, analytics, or advertising when those services are enabled. Browser extensions and managed-device software remain outside this tool's control.
Relevant references
These references govern or help explain the format, protocol, or calculation used here. Listing a reference does not claim certification or complete implementation of every optional feature.
- RFC 9562 (Universally Unique IDentifiers - UUIDs)
- RFC 4122 (Universally Unique IDentifier URN Namespace)
Content owner: CZOA Tools · Last reviewed: 2026-09-15 · Review methodology
How to use it
- Enter, paste, or select your input data into the UUID Timestamp & MAC Extractor workspace controls.
- Review available parameter fields, units, formats, or options configured for your task.
- Click the action button or observe immediate live calculations rendered in your browser runtime.
- Inspect the resulting output and any diagnostic messages, then copy or download the result if needed.
Frequently asked questions
Which UUID versions yield a timestamp here?+
The page accepts a trimmed 8-4-4-4-12 hexadecimal UUID, reports its version and variant, and derives an ISO timestamp only for version 1 or version 7. A version-1 result also exposes the final 12-hex-digit node field.
How is a version-1 timestamp reconstructed?+
It combines time_low, time_mid and the low 12 bits of time_hi into 100-nanosecond ticks, subtracts the 15 October 1582 UUID epoch, then converts milliseconds to a JavaScript Date. Version 7 instead reads its leading 48 bits as Unix milliseconds.
What does the tested browser result establish?+
The frozen page processed 550e8400-e29b-41d4-a716-446655440000 as version 4 with RFC 4122/RFC 9562 variant and returned null timestamp and node. This confirms it does not invent v1 data for that UUID.
Which UUID claims are outside this tool?+
It does not authenticate issuer, prove uniqueness, validate every RFC semantic constraint, recover a MAC for non-v1 values, or guarantee ISO conversion for a time outside JavaScript Date range.