Pith Number

pith:INTZHO5R

pith:2001:INTZHO5RAELOLRYDULOI4NND6M

not attested not anchored not stored refs pending

Was GRB 990123 a unique optical flash?

Alicia M. Soderberg, Cambridge), Enrico Ramirez-Ruiz (IoA

arxiv:astro-ph/0110519 v2 · 2001-10-23 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{INTZHO5RAELOLRYDULOI4NND6M}

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	2026-07-04T16:24:20.111479Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

436793bbb10116e5c703a2dc8e35a3f301bca666abea76cf2b0b033c654e6f56

Aliases

arxiv: astro-ph/0110519 · arxiv_version: astro-ph/0110519v2 · doi: 10.48550/arxiv.astro-ph/0110519 · pith_short_12: INTZHO5RAELO · pith_short_16: INTZHO5RAELOLRYD · pith_short_8: INTZHO5R

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/INTZHO5RAELOLRYDULOI4NND6M \
  | 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: 436793bbb10116e5c703a2dc8e35a3f301bca666abea76cf2b0b033c654e6f56

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1dada1f079a76b479bc8dca007ac998ac5bebe4f571af0d27050a7b44929373b",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-10-23T20:06:55Z",
    "title_canon_sha256": "979fa18501c8c30a28ac6e28b6cf1f012a0b51715f618a319314d13ca3c9fd87"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0110519",
    "kind": "arxiv",
    "version": 2
  }
}