Pith Number

pith:2S6SFMRS

pith:2010:2S6SFMRS5CZM6OJIHNHCCBUUQP

not attested not anchored not stored refs pending

Modelling the variability of 1ES1218+30.4

Felix Spanier, Matthias Weidinger

arxiv:1005.3747 v1 · 2010-05-20 · astro-ph.HE · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2S6SFMRS5CZM6OJIHNHCCBUUQP}

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	2026-05-18T04:42:45.607195Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d4bd22b232e8b2cf39283b4e21069483c4c007fbfef72494f3baeadaefc50bb1

Aliases

arxiv: 1005.3747 · arxiv_version: 1005.3747v1 · doi: 10.48550/arxiv.1005.3747 · pith_short_12: 2S6SFMRS5CZM · pith_short_16: 2S6SFMRS5CZM6OJI · pith_short_8: 2S6SFMRS

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/2S6SFMRS5CZM6OJIHNHCCBUUQP \
  | 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: d4bd22b232e8b2cf39283b4e21069483c4c007fbfef72494f3baeadaefc50bb1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ed78f1e8a8c8fd9fb2d5010952ba7e311fd4295922adaee369945d9b0b4a076b",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2010-05-20T16:03:15Z",
    "title_canon_sha256": "72c582ab16bd89faa4dd901f900d77d3298fec06213ff2c6169268f2d53c6410"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1005.3747",
    "kind": "arxiv",
    "version": 1
  }
}