bip-0327: use a portable monotonic clock in the reference self-test #2278

pull fametrano wants to merge 1 commits into bitcoin:master from fametrano:bip327-portable-monotonic-clock changing 1 files +1 −1

fametrano commented at 6:50 PM on September 7, 2026: contributor

bip-0327/reference.py's self-test reads time.clock_gettime_ns(time.CLOCK_MONOTONIC) for extra_in. Both symbols are documented "Availability: Unix" in CPython, so python3 reference.py raises AttributeError on Windows.

time.monotonic_ns() is the portable monotonic clock CPython documents for measuring elapsed time, available on all platforms since 3.7. It returns the same nanosecond int, so .to_bytes(8, 'big') is unaffected.

Not tested on Windows; verified against CPython's platform-availability docs.

bip-0327: use a portable monotonic clock in the reference self-test

reference.py reads time.clock_gettime_ns(time.CLOCK_MONOTONIC) to vary
extra_in across signing iterations. Both symbols are documented
"Availability: Unix", so `python3 reference.py` raises AttributeError on
Windows.

time.monotonic_ns() is the portable monotonic clock CPython documents for
measuring elapsed time, available on all platforms since 3.7. Not tested
on Windows.

fc9a1bce34

Contributors

fametrano