Pith Number

pith:DDADYJ2F

pith:2011:DDADYJ2FDN2HOUILPJTDEPOD3V

not attested not anchored not stored refs pending

4U 1907+09: a HMXB running away from the Galactic plane

E.Schilbach, R.-D.Scholz, S.Roeser, V.V.Gvaramadze

arxiv:1102.2437 v1 · 2011-02-11 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DDADYJ2FDN2HOUILPJTDEPOD3V}

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	2026-05-18T02:03:11.888440Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

18c03c27451b7477510b7a66323dc3dd5a0cd80bb366a1c28e4355cf1a266d37

Aliases

arxiv: 1102.2437 · arxiv_version: 1102.2437v1 · doi: 10.48550/arxiv.1102.2437 · pith_short_12: DDADYJ2FDN2H · pith_short_16: DDADYJ2FDN2HOUIL · pith_short_8: DDADYJ2F

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/DDADYJ2FDN2HOUILPJTDEPOD3V \
  | 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: 18c03c27451b7477510b7a66323dc3dd5a0cd80bb366a1c28e4355cf1a266d37

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7cd37a9b7bc65a931c1eda015e7b43e1981199c42b16eabd0d13c2a638213d92",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2011-02-11T21:00:01Z",
    "title_canon_sha256": "b81a449eda125d4820b5c7adc610897095e4a6b7ec9871ceb308a2aef262d555"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1102.2437",
    "kind": "arxiv",
    "version": 1
  }
}