Pith Number

pith:4O3DW6RE

pith:2013:4O3DW6RE2GM6A4VE6MMVFJ74EB

not attested not anchored not stored refs pending

A SCUBA-2 850 micron survey of protoplanetary discs in the sigma Orionis cluster

Amy J. Barger, Caitlin M. Casey, Chian-Chou Chen, David B. Sanders, Iain M. Coulson, Jonathan P. Williams, Lennox L. Cowie, Lucas A. Cieza, Michael Koss, Nicholas Lee, Sean M. Andrews

arxiv:1307.7174 v1 · 2013-07-26 · astro-ph.GA · astro-ph.EP · 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{4O3DW6RE2GM6A4VE6MMVFJ74EB}

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	2026-05-18T01:48:33.924036Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e3b63b7a24d199e072a4f31952a7fc204195efbe7d15bb7ee16e79fe03163827

Aliases

arxiv: 1307.7174 · arxiv_version: 1307.7174v1 · doi: 10.48550/arxiv.1307.7174 · pith_short_12: 4O3DW6RE2GM6 · pith_short_16: 4O3DW6RE2GM6A4VE · pith_short_8: 4O3DW6RE

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/4O3DW6RE2GM6A4VE6MMVFJ74EB \
  | 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: e3b63b7a24d199e072a4f31952a7fc204195efbe7d15bb7ee16e79fe03163827

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4ab274051e74586bd83ff4d2272971396171d0647430477f0b1735e2e3ad51b4",
    "cross_cats_sorted": [
      "astro-ph.EP",
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2013-07-26T21:33:30Z",
    "title_canon_sha256": "c4f73be28f9485396129e0bc93fdc18268afbc0dbcdc9f2ba5228f33124d7973"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.7174",
    "kind": "arxiv",
    "version": 1
  }
}