Pith Number

pith:737O3CN6

pith:2009:737O3CN6DSYM6XAOAXJHZD325T

not attested not anchored not stored refs pending

NIR spectroscopy of SDSS J0303-0019: a low luminosity, high Eddington ratio quasar at z~6

D.A. Riechers, F. Walter, Heidelberg), H.-W. Rix, J.D. Kurk (MPIA, L. Jiang, S. Jester, X. Fan

arxiv:0907.0435 v1 · 2009-07-02 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{737O3CN6DSYM6XAOAXJHZD325T}

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	2026-05-18T02:13:11.118225Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fefeed89be1cb0cf5c0e05d27c8f7aecdb32a587b549690e0cc41fa50c4c7c34

Aliases

arxiv: 0907.0435 · arxiv_version: 0907.0435v1 · doi: 10.48550/arxiv.0907.0435 · pith_short_12: 737O3CN6DSYM · pith_short_16: 737O3CN6DSYM6XAO · pith_short_8: 737O3CN6

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/737O3CN6DSYM6XAOAXJHZD325T \
  | 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: fefeed89be1cb0cf5c0e05d27c8f7aecdb32a587b549690e0cc41fa50c4c7c34

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3857e142ff394dc04cb4753671a6ca064d635f8a4d1e850d642bf7494adda92c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-07-02T16:38:16Z",
    "title_canon_sha256": "e20fe5b9e230e427a6678a39bc98e51a10ba0ea22bf8cc1dd19842c86d174dff"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.0435",
    "kind": "arxiv",
    "version": 1
  }
}