Pith Number

pith:FYLBJPGM

pith:2004:FYLBJPGML32IA565Q73BCXWSYT

not attested not anchored not stored refs pending

XMM-Newton observations of the BL Lac MS0205.7+3509: a dense, low-metallicity absorber

(10) University of Alaska), 11) ((1) University of Copenhagen, 2), (2) University of Leicester, (3) NUI Dublin, (4) NASA-GSFC, 5), (5) USRA, (6) Cork IT, (7) University of Maryland, 8), (8) Johns Hopkins, (9) University of Colorado, B. McBreen (3), D. Watson (1, E. Perlman (7, J. N. Reeves (4, J. Stocke (9), L. Hanlon (3), N. Smith (6), T. A. Rector (10

arxiv:astro-ph/0402105 v1 · 2004-02-04 · 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{FYLBJPGML32IA565Q73BCXWSYT}

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	2026-07-04T16:42:58.388767Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2e1614bccc5ef48077dd87f6115ed2c4f27a481d2e690b819523ca70ffc36aa1

Aliases

arxiv: astro-ph/0402105 · arxiv_version: astro-ph/0402105v1 · doi: 10.48550/arxiv.astro-ph/0402105 · pith_short_12: FYLBJPGML32I · pith_short_16: FYLBJPGML32IA565 · pith_short_8: FYLBJPGM

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/FYLBJPGML32IA565Q73BCXWSYT \
  | 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: 2e1614bccc5ef48077dd87f6115ed2c4f27a481d2e690b819523ca70ffc36aa1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "89caa922f53ef2669792deef68188df42f7cea71ab7bcac09171ed067c49ee37",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-02-04T17:23:18Z",
    "title_canon_sha256": "877dce550d43d371fe133f2c3f37e5c1a3a7c516a936008414a71ba9821c2361"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0402105",
    "kind": "arxiv",
    "version": 1
  }
}