Pith Number

pith:Q6MYZ3BO

pith:2003:Q6MYZ3BOU5FCCOV3D5OG7O5GLQ

not attested not anchored not stored refs pending

First detection of NH3 (1,0 - 0,0) from a low mass cloud core: On the low ammonia abundance of the rho Oph A core

Aa. Sandqvist, A. Brandeker, A. Hjalmarson, A. Lecacheux, B. Larsson, C. Curry, C. Wilson, E. Falgarone, E. Gregersen, F.v. Scheele, G. Mitchell, G. Olofsson, G. Serra, H. Floren, I. Ristorcelli, J. Harju, J.H. Black, K. Mattila, K. Volk, L. Johansson, L. Nordh, L. Pagani, M. Fich, M. Gerin, M. Olberg, N. Tothill, P. Bergman, P. Bernath, P. Encrenaz, P. Feldman, R. Booth, R. Liseau, R. Plume, S. Kwok, T. Hasegawa, T. Liljestrom, U. Frisk, V. Buat

arxiv:astro-ph/0303132 v1 · 2003-03-06 · 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{Q6MYZ3BOU5FCCOV3D5OG7O5GLQ}

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	2026-07-04T16:36:36.573668Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

87998cec2ea74a213abb1f5c6fbba65c2742bf4374f447e4308c579d0d734c84

Aliases

arxiv: astro-ph/0303132 · arxiv_version: astro-ph/0303132v1 · doi: 10.48550/arxiv.astro-ph/0303132 · pith_short_12: Q6MYZ3BOU5FC · pith_short_16: Q6MYZ3BOU5FCCOV3 · pith_short_8: Q6MYZ3BO

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/Q6MYZ3BOU5FCCOV3D5OG7O5GLQ \
  | 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: 87998cec2ea74a213abb1f5c6fbba65c2742bf4374f447e4308c579d0d734c84

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c30f2b90a4e60870ea32c1147e4345986558861014100f0b09b6b8216897b30f",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-03-06T08:57:36Z",
    "title_canon_sha256": "3de7806d850c1c5ddbbfd45df50d86bb864dce273659cca19996335782e507a7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0303132",
    "kind": "arxiv",
    "version": 1
  }
}