Pith Number

pith:77MREFYV

pith:2015:77MREFYVN4AZO2P2FP4QLE2XAH

not attested not anchored not stored refs pending

Discovery of a Shell of Neutral Atomic Hydrogen Surrounding the Carbon Star IRC+10216

E. Gerard (Observatoire de Paris), L. D. Matthews (MIT Haystack Observatory), T. Le Bertre (Observatoire de Paris)

arxiv:1502.02050 v1 · 2015-02-06 · 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{77MREFYVN4AZO2P2FP4QLE2XAH}

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	2026-05-18T01:41:04.338364Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ffd91217156f019769fa2bf905935701f646838e1dcc1c87e160c4ba615da8a5

Aliases

arxiv: 1502.02050 · arxiv_version: 1502.02050v1 · doi: 10.48550/arxiv.1502.02050 · pith_short_12: 77MREFYVN4AZ · pith_short_16: 77MREFYVN4AZO2P2 · pith_short_8: 77MREFYV

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/77MREFYVN4AZO2P2FP4QLE2XAH \
  | 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: ffd91217156f019769fa2bf905935701f646838e1dcc1c87e160c4ba615da8a5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f107a9f3ea93f9d09fe05f8e0da9f9f795333f30789fb9c24157076278a0f419",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2015-02-06T21:19:59Z",
    "title_canon_sha256": "e4fdf17c6b491c171ecde94df6b9cbf21b67af55692628fd912647bc77fb8154"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.02050",
    "kind": "arxiv",
    "version": 1
  }
}