Unrecorded (adjective)

1. Not having been recorded or not having been documented.
2. Not having been officially recorded or not having been registered.

Origin:

From the latin word "in-" meaning not and the past participle "recordatus" meaning remembered or recorded.

Examples:

1. The conversation was unrecorded and not written down.
2. The meeting's minutes were unrecorded and not saved.
3. The unrecorded history of the town was passed down through oral tradition.
4. The sale was unrecorded and not reported to the government.
5. The unrecorded music was only known by a select few.