Pith Number

pith:A2CCN5HA

pith:2012:A2CCN5HAFAJGYGLXKPM4UPHIYH

not attested not anchored not stored refs pending

Ultraviolet Spectra of ULX Systems

Jifeng Liu, Joel N. Bregman, Julie N. Felberg, Martin K\"ummel, Patrick J. Seitzer

arxiv:1205.0424 v1 · 2012-05-02 · 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{A2CCN5HAFAJGYGLXKPM4UPHIYH}

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	2026-05-18T03:56:34.561554Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

068426f4e028126c197753d9ca3ce8c1d5597d3b3f189208022964174518567e

Aliases

arxiv: 1205.0424 · arxiv_version: 1205.0424v1 · doi: 10.48550/arxiv.1205.0424 · pith_short_12: A2CCN5HAFAJG · pith_short_16: A2CCN5HAFAJGYGLX · pith_short_8: A2CCN5HA

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/A2CCN5HAFAJGYGLXKPM4UPHIYH \
  | 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: 068426f4e028126c197753d9ca3ce8c1d5597d3b3f189208022964174518567e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "045f481ef75ae2900e42e8f7224d5d43a34d0e0a6d69d8865d441cfa869094f3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2012-05-02T13:34:10Z",
    "title_canon_sha256": "a85e713235090431f83927062ae4251fed9f08ba99e4aac97897ad69607c16e6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1205.0424",
    "kind": "arxiv",
    "version": 1
  }
}