Rarity Blueprint

v1.0

Scope & Normalization

Scope: Evaluate the national number (strip the country code).

Canonical form: Strings of digits only.

Length consideration: Treat patterns primarily on the last 7–8 digits (common local length); longer global strings still qualify for premium tiers if they have unique global patterns (e.g., ultra-palindromes across the whole number).

Feature Extractors (Signals)

🏆Vanity / T9 Words (highest signal)

Method: Map digits → T9 and scan for words (≥4 letters), proper nouns, brand-like tokens; allow hyphenless compounds (HELLO, LOVE, STAR, CALL, PIZZA, ESTONIA, etc.). Accept common short words (3 letters) only if there are ≥2 of them or if surrounded by other strong features.

Strength tiers:

• Legendary:

  ≥5-letter clean word (e.g., HELLO, PIZZA) or two meaningful 4+ letter words in sequence (e.g., CALL-ME).

• Diamond:

  One strong 4–5 letter word plus another rare feature (palindrome core, quads, 7777/8888, etc.).

• Gold:

  One clear 4-letter word without extra rare features.

• Silver:

  Two or more 3-letter words (e.g., FUN-BOX) without other strong features.

🔄Palindromes & Symmetry

Local palindrome window sizes: 5, 6, 7, 8, 9+.

Rules:

• Legendary:

  Full-string palindrome (local part) of length ≥8 or a 7–8 digit palindrome centered and aligned (e.g., xABCDCBAx).

• Diamond:

  Long contiguous palindrome ≥6 and another strong feature (e.g., 777).

• Gold:

  Palindrome length ≥5.

• Silver:

  Shorter palindromes (3–4) only count if supported by a second feature.

🔁Repeats & Blocks (AB, ABA, ABAB, ABC, etc.)

Your rule honored:

ABAB (two-combination only, like 8484) ⇒ Silver.

Extended / stronger repeats:

Gold:

• ABABAB (≥6 digits of clean 2-block repeat).
• ABCABC (3-block repeat, ≥6 digits).
• AAA triple (same digit repeated 3+ times contiguously) when not part of a longer quad/stretch.

Diamond:

• AAAA quad or more (≥4 contiguous identical digits).
• Mixed stacked blocks with length ≥8 that show high structural regularity (e.g., ABABABAB, ABCABCABC with ≥9 digits).

Legendary:

• Dual-structure repeats (e.g., ABCABC embedded in a palindrome, or quad(s) combined with high-value lucky digits like 7777/8888).

📈Sequential Runs & Arithmetic Progressions

Ascending/descending runs: 0123, 3456, 9876, wrap-around allowed once (…7890).

• Gold:

  Clean run of length ≥5.

• Diamond:

  Runs ≥6 or combined with other strong features.

• Silver:

  Runs of length 4 if no other feature.

🍀Cultural / Lucky Clusters

777, 888, 999 and 8888/7777:

• Diamond:

  Contiguous 7777/8888/9999, or two distinct lucky triples in one number.

• Gold:

  Single lucky triple (e.g., 777) not part of a quad and without other strong features.

• Legendary:

  Lucky quad + another premium signal (vanity word or long palindrome).

📅Date / Year Signatures & "Story"

YYYY years like 1999, 2000, 2025; dates like DDMMYY, MMDDYY, YYYYMMDD.

• Gold:

  Clean recognizable year or DDMM/MMDD with sensible day/month.

• Diamond:

  Full date structures (DDMMYYYY, YYYYMMDD) or mirrored dates (e.g., 20022002).

• Legendary:

  Perfect palindromic/ambigrammatic dates or date + lucky stack.

✨Numeric Aesthetics (secondary tie-breakers)

Digit diversity index (fewer distinct digits ↑ rarity if structure is strong).

Alternation (e.g., 121212), mirroring, center symmetry.

Prime/checksum quirks: treat as slight boosters, not tier setters.

Scoring & Tiering

Base scores (sum of strongest features; don't stack the same category twice unless qualitatively different)

Vanity/T9 (single ≥5-letter word)+5

Vanity/T9 (two 4+ letter words)+6

Long palindrome (≥6)+4

Full-string local palindrome+5

Repeats:

ABAB (silver-only baseline)+1 (capped at Silver unless combined with other features)

ABABAB/ABCABC (≥6 length)+3

AAA (triple)+2

AAAA+ (quad or more)+4

Runs:

4-long+1

5-long+2

6+ long+3

Lucky:

Single 777/888/999 (triple)+3

Quad 7777/8888/9999+5

Dates:

Year or clean MMDD/DDMM+2

Full date 6–8 digits+3

Palindromic date+4

Aesthetics boosters (one time):

Strong mirroring/center symmetry/diversity+1

Tier Thresholds (with the repeat rule enforced)

Legendary:

Score ≥8 or Vanity/T9 (≥5 letters) and any other Gold+ feature or Lucky quad + any Gold+ feature.

Diamond:

Score 6–7 or any AAAA+ or long palindrome (≥6) + any other feature.

Gold:

Score 3–5 or ABABAB/ABCABC (≥6), 5+ runs, single lucky triple, year/date patterns.

Silver:

Everything else that has at least one weak pattern (incl. ABAB 2-combo repeats).

Important: ABAB by itself cannot exceed Silver.

Conflict resolution: pick the highest tier that any rule confers (after enforcing the ABAB cap). If multiple categories apply, use the score to settle ties; if still tied, prefer vanity > palindrome > lucky > repeats > runs > dates > aesthetics.

Audit & Upgrade Policy

⬆️Immediate upgrades:

• 5+ digit palindromes ⇒ at least Gold.
• Repeats beyond ABAB (ABABAB, ABCABC, AAAA+) ⇒ Gold/Diamond.
• Lucky triples/quads (777/888/999; esp. quads) ⇒ Gold/Diamond.
• Any clean 4–5+ letter T9 word ⇒ Gold/Diamond, and Legendary if combined.

⬇️Demotions:

• Simple ABAB patterns that have been placed in Gold/Diamond should be Silver unless accompanied by another strong feature.

Output Format & Categories

Current schema:

Pattern Type: one of { vanity, palindrome, repeating sequence, sequential run, lucky, date, composite, aesthetic }.

Pattern Matches: the detected token (e.g., HELLO, 7777, ABABAB, ABCABC, 48384, DDMMYYYY), or a compact descriptor when composite (e.g., HELLO + 777).

Distribution Intent

We won't "force" the same proportions; rarity emerges from features. Still, we can target a healthy but scarce top:

Legendary:~0.1–0.5%

Diamond:~1–2%

Gold:~8–15%

Silver:the remainder with at least one detectable (even weak) feature

Vanity/T9 will be the strongest lever for Diamond/Legendary. If a number forms a clear 5+ letter word: Legendary unless an obvious conflict.