Pith Number

pith:2JPC4LCC

pith:2019:2JPC4LCCP7H7N7RJ4RVYO2IA4I

not attested not anchored not stored refs pending

Characterising the i-band variability of YSOs over six orders of magnitude in timescale

Cameron P. M. Bell, C. D. H. Williams, Darryl J. Sergison, S. P. Littlefair, Tim Naylor

arxiv:1912.01615 v1 · 2019-12-03 · 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{2JPC4LCCP7H7N7RJ4RVYO2IA4I}

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	2026-07-05T00:30:38.209296Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d25e2e2c427fcff6fe29e46b876900e22349e7cd683728d101bb203352d7303e

Aliases

arxiv: 1912.01615 · arxiv_version: 1912.01615v1 · doi: 10.48550/arxiv.1912.01615 · pith_short_12: 2JPC4LCCP7H7 · pith_short_16: 2JPC4LCCP7H7N7RJ · pith_short_8: 2JPC4LCC

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/2JPC4LCCP7H7N7RJ4RVYO2IA4I \
  | 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: d25e2e2c427fcff6fe29e46b876900e22349e7cd683728d101bb203352d7303e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7ff3fe3dfe8b313c0b4d0426b271ea3d64b74b746533ae921b0f46705eb267e0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2019-12-03T19:00:02Z",
    "title_canon_sha256": "9d6ec375f7e9a2096bc905c2806e761aaaf3af4f95682034011172d0f1f2fa04"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1912.01615",
    "kind": "arxiv",
    "version": 1
  }
}