Pith Number

pith:XU73MJ75

pith:2009:XU73MJ7522ZR7LEW7B4MDVAFGE

not attested not anchored not stored refs pending

Spectral modelling of 1 ES 1218+30.4

F. Spanier, K. Mannheim, M. R\"uger

arxiv:0909.3732 v1 · 2009-09-21 · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XU73MJ7522ZR7LEW7B4MDVAFGE}

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	2026-05-18T02:11:45.871928Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bd3fb627fdd6b31fac96f878c1d4053119855350bcd794ea6a51605e1a0fbc6b

Aliases

arxiv: 0909.3732 · arxiv_version: 0909.3732v1 · doi: 10.48550/arxiv.0909.3732 · pith_short_12: XU73MJ7522ZR · pith_short_16: XU73MJ7522ZR7LEW · pith_short_8: XU73MJ75

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/XU73MJ7522ZR7LEW7B4MDVAFGE \
  | 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: bd3fb627fdd6b31fac96f878c1d4053119855350bcd794ea6a51605e1a0fbc6b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6bd67f0f7ed45b511d54ffb44b8504c7d7ced5a978eaf6b6215dcfe550d3af01",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2009-09-21T10:54:40Z",
    "title_canon_sha256": "8c3e95ff906b4a4f18ac5fcb29e9099db8feee4995efbcbc7e82455c601b10fd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.3732",
    "kind": "arxiv",
    "version": 1
  }
}