Pith Number

pith:72SD7XRE

pith:2011:72SD7XREQW25ODC4G4ILONURWS

not attested not anchored not stored refs pending

Observing a column-dependent zeta in dense interstellar sources: the case of the Horsehead Nebula

E. Herbst, E. Roueff, O. Morata, P. B. Rimmer

arxiv:1110.2399 v1 · 2011-10-11 · astro-ph.GA

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

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	2026-05-18T02:00:13.721250Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fea43fde2485b5d70c5c3710b73691b4a68938114a01d692915b2c4547e42a2b

Aliases

arxiv: 1110.2399 · arxiv_version: 1110.2399v1 · doi: 10.48550/arxiv.1110.2399 · pith_short_12: 72SD7XREQW25 · pith_short_16: 72SD7XREQW25ODC4 · pith_short_8: 72SD7XRE

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/72SD7XREQW25ODC4G4ILONURWS \
  | 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: fea43fde2485b5d70c5c3710b73691b4a68938114a01d692915b2c4547e42a2b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1d084d00d2de32ea63712634fc83116ba5ed0e38d782795a127d7c8aa00eeed7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2011-10-11T15:27:53Z",
    "title_canon_sha256": "0a8f4ec0d030f02454879c0fe415ab3006c8525e423821fea243349c8701df5c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1110.2399",
    "kind": "arxiv",
    "version": 1
  }
}