Pith Number

pith:JFTDOIEW

pith:2007:JFTDOIEW2URLBFGXNDKVGPVPAX

not attested not anchored not stored refs pending

Long-term X-ray changes in the emission from the anomalous X-ray pulsar 4U 0142+61

(2) Dynetics, (3) NASA GSFC), C. R. Tam (1), F. P. Gavriil (3) ((1) McGill University, Inc.; NSSTC, M. E. Gonzalez (1), P. M. Woods (2), R. Dib (1), V. M. Kaspi (1)

arxiv:0708.2756 v2 · 2007-08-21 · 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{JFTDOIEW2URLBFGXNDKVGPVPAX}

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	2026-05-18T02:35:30.538808Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4966372096d522b094d768d5533eaf05e63c390637e0a7b66bc76f55922514ef

Aliases

arxiv: 0708.2756 · arxiv_version: 0708.2756v2 · doi: 10.48550/arxiv.0708.2756 · pith_short_12: JFTDOIEW2URL · pith_short_16: JFTDOIEW2URLBFGX · pith_short_8: JFTDOIEW

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/JFTDOIEW2URLBFGXNDKVGPVPAX \
  | 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: 4966372096d522b094d768d5533eaf05e63c390637e0a7b66bc76f55922514ef

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d0c0a61ad48d8c09db43f07287da0d60ee40363917a835220e73543685bf6257",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-08-21T04:24:18Z",
    "title_canon_sha256": "14b0f65bfe0b4f719292cc1d9fbdcce676335925460338a0e78dbbc3bec88049"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0708.2756",
    "kind": "arxiv",
    "version": 2
  }
}