FTB-C000657 / Implementation concept

Bottom Candidate Availability

Bottom Candidate Availability is the first knowledge index at which the final low in a double bottom is confirmed.

Advanced 1 linked topicEvidence-reviewed

Definitions

In plain terms

The second low is not usable until its right-side pivot bars have arrived.

Technical

candidate_available_at = final_structural_low_index + pivot_right, and no neckline test is allowed earlier.

Scope

Plotting the pattern at its final low hides the actual discovery clock.

Examples

  • A reviewer computes Bottom Candidate Availability on a deterministic close fixture and checks pivot timing, threshold equality, neckline behavior, and rejection diagnostics before publication.

Common misconceptions

  • Plotting the pattern at its final low hides the actual discovery clock.

Concept relationships

Prerequisites

Related

Required by

Where this concept is used

Evidence and governance

  1. Pine Script repainting concepts TradingView · official platform documentation

    Supports: preferred label, short definition, technical definition

    Limits: Platform display behavior does not establish financial usefulness or predictive value.

  2. Foundations of Technical Analysis: Computational Algorithms, Statistical Inference, and Empirical Implementation Lo, Mamaysky, and Wang · first party technical publication

    Supports: preferred label, short definition, technical definition

    Limits: The paper's smoothing, sample, and empirical design are not copied into this package and do not validate its thresholds.

  3. scipy.signal.find_peaks SciPy · first party technical publication

    Supports: preferred label, short definition, technical definition

    Limits: This retrospective signal function is not itself a causal OHLC pivot detector.

  4. Pine Script pivot techniques TradingView · official platform documentation

    Supports: preferred label, short definition, technical definition

    Limits: The package freezes its own equality, separation, and OHLC policies rather than claiming one universal pivot definition.

  5. Zig Zag indicator QuantConnect · official platform documentation

    Supports: preferred label, short definition, technical definition

    Limits: This package selects a close-only percentage-reversal variant and documents the difference.

  6. LEAN ZigZag source QuantConnect · first party technical publication

    Supports: preferred label, short definition, technical definition

    Limits: A maintained implementation is evidence for one convention, not a universal market rule.

Reviewed by
fintech-builder-batch-012
Last reviewed
2026-08-10
Next review
2027-08-10
Record status
evidence reviewed

This record is evidence-reviewed and readable, but not yet promoted to published — it is served noindex,follow and excluded from the sitemap.

Written by

Fintech engineer building market-data and financial systems, and the author of every article, glossary record, and reference implementation on The Fintech Builder.