Pith Number

pith:NVYBR5D5

pith:2013:NVYBR5D53PHKX6XE5AE2BN2Q4Z

not attested not anchored not stored refs pending

Pre-main sequence stars older than 8 Myr in the Eagle Nebula

Guido De Marchi, M. G. Guarcello, Nino Panagia, Rosaria Bonito

arxiv:1307.8446 v1 · 2013-07-31 · 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{NVYBR5D53PHKX6XE5AE2BN2Q4Z}

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	2026-05-18T01:48:32.109068Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6d7018f47ddbceabfae4e809a0b750e64b57c7352f373a1c5a468aa20796988e

Aliases

arxiv: 1307.8446 · arxiv_version: 1307.8446v1 · doi: 10.48550/arxiv.1307.8446 · pith_short_12: NVYBR5D53PHK · pith_short_16: NVYBR5D53PHKX6XE · pith_short_8: NVYBR5D5

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/NVYBR5D53PHKX6XE5AE2BN2Q4Z \
  | 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: 6d7018f47ddbceabfae4e809a0b750e64b57c7352f373a1c5a468aa20796988e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9f4db62395f1682d475723291e46055fdba88b0acf8e3b75e5cba3e58cab62b1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-07-31T19:57:43Z",
    "title_canon_sha256": "a2a24dd200107915df716ddf27263221a6a8ead770c9464e6e87cbb709ab888b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.8446",
    "kind": "arxiv",
    "version": 1
  }
}