GTDTEBTCSPECv1.0 Encoding: UTF-8 Fields: schematxid, numeroUuid, fechaHoraEmision, serie, numeroDocumento, granTotal, moneda schematxid: the txid for this specific schema on the bitcoin blockchain numeroUuid: Canonicalized, 32 lowercase hex, no hyphens fechaHoraEmision: ISO 8601 timestamp with offset, drop the fractional seconds, do not round: yyyy-mm-ddThh:mm:ss-06:00 serie: uppercase letters A-Z, 1-8 characters numeroDocumento: integer, no leading zeros granTotal: fixed 2 decimals, dot separator, no thousands sep moneda: ISO 4217 three letter currency code. Order: schematxid+numeroUuid+fechaHoraEmision+serie+numeroDocumento+granTotal+moneda Separator: Plus sign. ASCII 43, Unicode U+002B: "+" Canonical: join fields with separator, no trailing separator, no spaces Hash: SHA-256 of canonical string, lowercase hex Schema: GTDTEBTCSPECv1.0+<schematxid>+<numeroUuid>+<hash>