Pith Number

pith:U7I2M4CA

pith:1998:U7I2M4CAJDMWNODYNILISWKVVS

not attested not anchored not stored refs pending

Cosmological Adaptive Mesh Refinement

Greg L. Bryan, Michael L. Norman

arxiv:astro-ph/9807121 v1 · 1998-07-13 · 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{U7I2M4CAJDMWNODYNILISWKVVS}

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	2026-05-18T01:21:56.462996Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a7d1a6704048d966b8786a16895955ac9017c2cb1d0c4b4477dfa11d939ef8d9

Aliases

arxiv: astro-ph/9807121 · arxiv_version: astro-ph/9807121v1 · doi: 10.48550/arxiv.astro-ph/9807121 · pith_short_12: U7I2M4CAJDMW · pith_short_16: U7I2M4CAJDMWNODY · pith_short_8: U7I2M4CA

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/U7I2M4CAJDMWNODYNILISWKVVS \
  | 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: a7d1a6704048d966b8786a16895955ac9017c2cb1d0c4b4477dfa11d939ef8d9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9cf8b00dcc83009c64302050dde27ec8bd7174426b204398f3b6f135f018aaf9",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-07-13T15:25:26Z",
    "title_canon_sha256": "10184fbf1b1d46fbaab5fca9af80bdfa35ea4ced74ce5e94a2e3df2205d3c730"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9807121",
    "kind": "arxiv",
    "version": 1
  }
}