Pith Number

pith:7NL6F7WY

pith:2008:7NL6F7WYUII6QI4WS7MNK6CFWH

not attested not anchored not stored refs pending

Detection of HCO2+ toward the Low-Mass Protostar IRAS 04368+2557 in L1527

Nami Sakai, Satoshi Yamamoto, Takeshi Sakai, Yuri Aikawa

arxiv:0801.4441 v1 · 2008-01-29 · 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{7NL6F7WYUII6QI4WS7MNK6CFWH}

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	2026-05-18T04:29:33.741210Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fb57e2fed8a211e8239697d8d57845b1f29719fcfb98ded44313f49b8ba188a2

Aliases

arxiv: 0801.4441 · arxiv_version: 0801.4441v1 · doi: 10.48550/arxiv.0801.4441 · pith_short_12: 7NL6F7WYUII6 · pith_short_16: 7NL6F7WYUII6QI4W · pith_short_8: 7NL6F7WY

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/7NL6F7WYUII6QI4WS7MNK6CFWH \
  | 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: fb57e2fed8a211e8239697d8d57845b1f29719fcfb98ded44313f49b8ba188a2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6a0cd62220654052b23fe4abe91d47cf565277b3a7e090769810cd82cadd3cd9",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-01-29T07:51:45Z",
    "title_canon_sha256": "cf7b8a73e3da404fffe55f9e01956956706aac29ef6ff30fadf18b959ee8c201"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0801.4441",
    "kind": "arxiv",
    "version": 1
  }
}