Pith Number

pith:NVNWCLOH

pith:2012:NVNWCLOH2QRVFMCSKKHCOOB542

not attested not anchored not stored refs pending

Spectroscopic detection of Carbon Monoxide in the Young Supernova Remnant Cassiopeia A

Jan Cami, Jeonghee Rho, Takashi Onaka, William Reach

arxiv:1202.4540 v1 · 2012-02-21 · 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{NVNWCLOH2QRVFMCSKKHCOOB542}

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	2026-05-18T01:58:23.095681Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6d5b612dc7d42352b052528e27383de6ad425c44a91f7539b8df1d77665086cd

Aliases

arxiv: 1202.4540 · arxiv_version: 1202.4540v1 · doi: 10.48550/arxiv.1202.4540 · pith_short_12: NVNWCLOH2QRV · pith_short_16: NVNWCLOH2QRVFMCS · pith_short_8: NVNWCLOH

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/NVNWCLOH2QRVFMCSKKHCOOB542 \
  | 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: 6d5b612dc7d42352b052528e27383de6ad425c44a91f7539b8df1d77665086cd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0c04d65b96ef96b61424ecd6013127e877ac1f9466933cbb31e2d92f4d9233ea",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2012-02-21T07:05:59Z",
    "title_canon_sha256": "db58cee43bf36b70a0f7d4c02bf10784264dfa399ab3c70f03881f908194cad7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.4540",
    "kind": "arxiv",
    "version": 1
  }
}