Pith Number

pith:A7XCKBSY

pith:2015:A7XCKBSYNBIIXFBHR4AT4PFRZB

not attested not anchored not stored refs pending

Spectroscopic and photometric analysis of the early-type spectroscopic binary HD 161853 in the centre of an H II region

A. Sota, C. Putkuri, E. J. Alfaro, J. I. Arias, J. Ma\'iz Apell\'aniz, N. I. Morrell, N. R. Walborn, R. Gamen, R. H. Barb\'a

arxiv:1511.03470 v2 · 2015-11-11 · 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{A7XCKBSYNBIIXFBHR4AT4PFRZB}

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	2026-05-18T01:26:40.570292Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

07ee25065868508b94278f013e3cb1c866dbb3819f94cd02438987036cbc72fa

Aliases

arxiv: 1511.03470 · arxiv_version: 1511.03470v2 · doi: 10.48550/arxiv.1511.03470 · pith_short_12: A7XCKBSYNBII · pith_short_16: A7XCKBSYNBIIXFBH · pith_short_8: A7XCKBSY

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/A7XCKBSYNBIIXFBHR4AT4PFRZB \
  | 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: 07ee25065868508b94278f013e3cb1c866dbb3819f94cd02438987036cbc72fa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0b6dee1a0191f9abc65459910b7121da206c9ca9d0aced240c2adbe63787e813",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2015-11-11T12:11:05Z",
    "title_canon_sha256": "77b4c088c23f2ff38898bab859e228c1e419210e41294d57ec44ed465e1a5317"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1511.03470",
    "kind": "arxiv",
    "version": 2
  }
}