Pith Number

pith:EXFQF2UQ

pith:2011:EXFQF2UQUYRGCHAREJQ6HIYGV2

not attested not anchored not stored refs pending

Ultraviolet Continuum Color Variability of Luminous Sloan Digital Sky Survey QSOs

Hiroaki Sameshima, Shintaro Koshida, Takeo Minezaki, Tomoki Morokuma, Yukiyasu Kobayashi, Yu Sakata, Yuzuru Yoshii

arxiv:1103.3619 v1 · 2011-03-18 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EXFQF2UQUYRGCHAREJQ6HIYGV2}

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	2026-05-18T02:02:49.861444Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

25cb02ea90a622611c112261e3a306ae8c29033e584a2f84138004ed3c62ab98

Aliases

arxiv: 1103.3619 · arxiv_version: 1103.3619v1 · doi: 10.48550/arxiv.1103.3619 · pith_short_12: EXFQF2UQUYRG · pith_short_16: EXFQF2UQUYRGCHAR · pith_short_8: EXFQF2UQ

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/EXFQF2UQUYRGCHAREJQ6HIYGV2 \
  | 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: 25cb02ea90a622611c112261e3a306ae8c29033e584a2f84138004ed3c62ab98

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6d31a0a9d071ec85065c01e62268da17a00e80026ba17ade96accbaf224356ef",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2011-03-18T13:26:40Z",
    "title_canon_sha256": "02b913aa7e41a18872988f9633cf8b26899b0318e68fb1633c2fced81f6d061f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1103.3619",
    "kind": "arxiv",
    "version": 1
  }
}