TLY / CHRONON

A demographically-ruled monetary asset. TLY is the index: humanity's total remaining life-years, S(t) = Σ over (age, sex, country) of population × remaining life expectancy. Mirror is the protocol whose token supply algorithmically mirrors S. CHRONON is the token. Price floats; the formula governs supply only.

Layered rollout (DECISIONS.md #1): v1 index → v2 cash-settled derivatives → v3 Mirror token → v4 Ledger.

Governing documents

File	Role
`DECISIONS.md`	Locked design decisions. Never contradicted.
`RESEARCH_PROGRAM.md`	The full map: math, data, phases, gates, governance.
`SPEC.md`	The seven build capabilities with acceptance criteria.
`METHODOLOGY_v0.md`	The v0 math: estimator, transport identity, error budget.
`RALPH_LOOP.md`	The autonomous build loop protocol.

Provenance notice (A-16 CLOSED 2026-09-03): the 2026-08-16 loss was resolved by RESTORE, not ratification-of-reconstruction: seed/ and METHODOLOGY_v0.md are the verbatim originals (delivered back in chronon-restore-A16.zip); the reconstructions remain archived under ops/reconstruction/2026-08-16/, still byte-runnable. AC-1.2 is strict: the v1 engine reproduces every original golden value to 4 dp on the frozen data/snapshots/v0-original/ inputs.

Research series: every published print is research-mode until the G5 source-of-record switch to WPP — the current settlement path uses WHO GHO life tables, whose license is non-commercial; the commercial licensing gate (tly/licensing_gate.py) blocks that path by construction. Prints carry this in their accuracy/coverage blocks; nothing here is investment advice or a settlement-grade benchmark yet.

Principles (non-negotiable)

Radical verifiability. Every published figure is computed by open code from keyless public endpoints, prints its source URLs, and is reproducible by any third party. No number ships without a runnable path.
First print settles. Corrections are forward-only, in ledger/CORRECTIONS.md. No historical value is ever restated.
Decimal everywhere supply- or index-adjacent (precision 34, ROUND_HALF_EVEN). Floats never touch published numbers.
Snapshot-first. Fetch to data/snapshots/<date>/ with a sha256 manifest, then compute offline. Small v0 snapshots are committed; large snapshots move to object storage with manifests committed in-repo (RESEARCH_PROGRAM Part VII).
Licensing gate. docs/LICENSING.md must be cleared before the first public print.

Layout

tly/              the package (index computation)
seed/             v0 calculator and its golden output (ground truth)
tests/            pytest suite; the golden test anchors every refactor
data/snapshots/   content-hashed input snapshots
docs/             licensing table, governance artifacts
ledger/           forward-only correction ledger
loop/             Ralph-loop state: BACKLOG.md, JOURNAL.md, LEARNINGS.md
.github/          CI (tests on push) + weekly Monday 12:00 UTC print job

Run

python3.12 -m venv .venv && . .venv/bin/activate
pip install -e '.[dev]'
pytest

Autonomous build: ./ralph.sh (see RALPH_LOOP.md).

Licensing

Code: Apache-2.0 (LICENSE). Documentation and published index data: CC BY 4.0. Upstream data licenses: docs/LICENSING.md.