Pith Number

pith:TJFALUB7

pith:2015:TJFALUB7CHO67EHV6XWUYDGCT6

not attested not anchored not stored refs pending

The chemistry of planetary nebulae in the outer regions of M31

B. Balick, K.B. Kwitter, K. Hensley, R.B.C. Henry, R.L.M. Corradi

arxiv:1504.03869 v1 · 2015-04-15 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TJFALUB7CHO67EHV6XWUYDGCT6}

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	2026-05-18T01:36:53.899816Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9a4a05d03f11ddef90f5f5ed4c0cc29fa21bfd001887718a61ee361b88563ed8

Aliases

arxiv: 1504.03869 · arxiv_version: 1504.03869v1 · doi: 10.48550/arxiv.1504.03869 · pith_short_12: TJFALUB7CHO6 · pith_short_16: TJFALUB7CHO67EHV · pith_short_8: TJFALUB7

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/TJFALUB7CHO67EHV6XWUYDGCT6 \
  | 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: 9a4a05d03f11ddef90f5f5ed4c0cc29fa21bfd001887718a61ee361b88563ed8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2e56db993f54069433b50edb70864308d84233ab7a0b6e9a5ffa30d649aecf8a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-04-15T11:44:58Z",
    "title_canon_sha256": "2e131a7f70fdd71e1888233df627cec9564f0527c7f5798147a94be54a2e5c9f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.03869",
    "kind": "arxiv",
    "version": 1
  }
}