As to the Hearsay Rule, Section 44 of Rule 130 of the Rules ofCourt similarly provides that entries in official records are anexception to the rule. The rule provides that entries in officialrecords made in the performance of the duty of a publicofficer of the Philippines, or by a person in the performance ofa duty specially enjoined by law, are prima facie evidence ofthe facts therein stated. The necessity of this rule consists inthe inconvenience and difficulty of requiring the official'sattendance as a witness to testify to the innumerabletransactions in the course of his duty. The document'strustworthiness consists in the presumption of regularity ofperformance of official duty. Cadastral maps are the output of cadastral surveys. TheDENR is the department tasked to execute, supervise andmanage the conduct of cadastral surveys. It is, therefore,clear that the cadastral map and the corresponding list ofclaimants qualify as entries in official records as they wereprepared by the DENR, as mandated by law. As such, they areexceptions to the hearsay rule and are prima facie evidenceof the facts stated therein.25. REPUBLIC OF THE PHILIPPINES VS MUPASDoctrine:Under the best evidence rule, when the subject of inquiryrelates to the contents of a document, no evidence shall beadmissible other than the original document itself. In provingthe terms of a written document, the original of the documentmust be produced in court.—Under the best evidence rule,when the subject of inquiry relates to the contents of adocument, no evidence shall be admissible other than theoriginal document itself. In proving the terms of a writtendocument, the original of the document must be produced incourt. Facts:On October 5, 1994, Asia's Emerging Dragon Corp. (AEDC)submitted an unsolicited proposal to the Government -throughtheDepartmentofTransportationandCommunications (DOTC)and the Manila International AirportAuthority (MIAA)- for the construction and development of theNAIA-IPT III under a build-operate-and-transfer (BOT)arrangement. The DOTC and the MIAA invited the public tosubmit competitive and comparative proposals to AEDC'sunsolicited proposal in accordance with the BOT Law and itsimplementing rulesPaircargo consortium also submitted their competitiveproposal to build the NAIA-IPT IIIBoth AEDC and Paircargo offered to build, however, Paircargosubmitted a bid superior to AEDC’s unsolicited proposal, thusDOTC awarded the project to Paircargo (PIATCO)PIATCO engaged the services of Takenaka, as well as,Asahikosan, both foreign corporations organized in Japan, forthe construction of the NAIA-IPT, however, PIATCO defaultedon its obligations, and to settle the problem Takenaka andAsahikosan agreed to defer PIATCO’s payments until June2003.