Pith Number

pith:RR4T7FGH

pith:1999:RR4T7FGH2CU3IEJWQ2KI3COMC6

not attested not anchored not stored refs pending

The KX method for producing K-band flux-limited samples of quasars

C. B. Foltz, P. C. Hewett, S. J. Warren

arxiv:astro-ph/9911064 v1 · 1999-11-04 · astro-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RR4T7FGH2CU3IEJWQ2KI3COMC6}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T02:40:27.429940Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8c793f94c7d0a9b4113686948d89cc17b3ac1c639361f8a118e2dda9f809f571

Aliases

arxiv: astro-ph/9911064 · arxiv_version: astro-ph/9911064v1 · doi: 10.48550/arxiv.astro-ph/9911064 · pith_short_12: RR4T7FGH2CU3 · pith_short_16: RR4T7FGH2CU3IEJW · pith_short_8: RR4T7FGH

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/RR4T7FGH2CU3IEJWQ2KI3COMC6 \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 8c793f94c7d0a9b4113686948d89cc17b3ac1c639361f8a118e2dda9f809f571

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b5a47efb0ccf2d47e13061bf858797ed7e06885881d0bf27c41b480d0cf326c8",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-11-04T18:57:37Z",
    "title_canon_sha256": "452e8d673fb6d0e3b346d6171b4f5388a9c39461cf2c4d0726a6ae481dc961d0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9911064",
    "kind": "arxiv",
    "version": 1
  }
}