01
Snapshot-derived
Observed wallet change
Rank, balance, and observed-set changes are compared across compatible monitoring runs using raw on-chain balances.A balance decrease does not prove a sale.
On-chain intelligence for crypto investors
The chartreacts last.Watch the wallets first.
HolderOS monitors the important wallets around the tokens you invest in and turns observable holder changes into a ranked intelligence feed - so you can understand what is changing before manually searching through block explorers.
Context before conclusionsEvidence behind every signalObserved coverage disclosed
Rank changeBalance changeObserved concentrationExchange evidenceSource limitations
From raw activity to investment context
The chain reports what happened.HolderOS explains what deserves attention.
Block explorer
0x7F2…A91 changed its $NOVA balance between two monitoring runs.
Accurate data. Missing context.HolderOS
This owner's observed rank moved from #9 to #4 while concentration among the observed owner set increased.
Snapshot-derived signal · This does not prove a purchase or future sale.What changedHow large the change wasHow it compares with the previous runWhat the evidence can and cannot prove
One feed. More context. Fewer unsupported conclusions.
See what changed.Then inspect the evidence.
HolderOS separates observed holder changes, transaction-backed activity, and unavailable conclusions - so you can understand what is known without confusing a signal with a prediction.
Confirmed signalFictional example
Tokens moved to a reliably labeled exchange address.
A monitored wallet sent tokens in a transaction whose destination is classified as an exchange by an identified source.
- What changed
- Transaction evidence available
- Why it matters
- Exchange deposits can be relevant to potential sell-pressure review
- Limitation
- A deposit does not prove that a sale occurred
Signal traceConfirmed
EvidenceTransaction record
CoverageObserved owner set
LimitationDeposit is not proof of sale
Evidence before conclusions
Not every wallet changemeans the same thing.
HolderOS separates snapshot-derived changes, transaction-backed activity, and inferred classifications before presenting a signal to an investor.
02
Confirmed evidence
Transaction-backed activity
Transfers and exchange-related activity require transaction evidence, reliable address classification, and source provenance.A transfer destination matters, but intent is still not guaranteed.
03
Heuristic
Inferred context
Where identity or behavior is inferred rather than proven, HolderOS displays the reasoning, source, confidence, and limitation.Inferred classifications are never presented as verified identity.
The monitoring loop
Add a token.Understand what changes.
A focused workflow for investors who want evidence-backed visibility into important wallet activity around the tokens they hold or follow.
01
Add a token
Start without uploading a holder list.
Add a supported token by contract address or supported token link. HolderOS resolves the token and begins discovering the supported observed owner set automatically.Start monitoring02
Monitor the observed owner set
Compare what changed between runs.
HolderOS tracks observed ranks, raw balances, supply percentages, owner-set entries and exits, monitoring quality, and evidence-backed activity where supported.Explore the signals03
Review the evidence
Know what is fact, inference, or unavailable.
Every signal includes its source, timestamp, classification, supporting values, and limitations so you can investigate without treating the output as a price prediction.View Investor plansChoose your monitoring depth
Start with one token.Expand as your portfolio grows.
Every Investor plan follows the same principle: show the evidence, disclose the coverage, and separate observable activity from unsupported conclusions.
Free
$0
Track one token, one watchlist, digest-only.
- 1 watchlist
- 1 token
- Daily digest
- In-app alerts
Starter
$150/month
For a focused short list of tokens.
- 3 watchlists
- 3 tokens total
- Hourly checks
- Email + in-app alerts
Pro
$300/month
Real-time coverage across every channel.
- 5 watchlists
- 5 tokens total
- Real-time checks
- Email + Telegram + in-app
- Advanced analytics
Enterprise
Custom
Unlimited watchlists and tokens.
- Unlimited watchlists
- Unlimited tokens
- Real-time checks
- All channels
- Advanced analytics
Straight answers
Before youmonitor a token.
Need an answer about a specific chain, token, or monitoring limitation? Talk with the HolderOS team.
01Does HolderOS predict whether a token’s price will rise or fall?+
No. HolderOS monitors observable wallet, balance, rank, concentration, and transaction evidence. It helps investors understand what deserves attention, but it does not guarantee intent, predict price movement, or provide a buy-or-sell instruction.
02Do I need to upload a holder list?+
No. Investor monitoring begins with a supported token. HolderOS automatically discovers the supported observed owner set using approved on-chain providers.
03Does HolderOS monitor every holder of a token?+
Not always. Coverage depends on the chain and provider. The current Solana implementation derives wallet owners from the largest observed token accounts and clearly discloses that this is not a complete holder list.
04Does a balance decrease mean that a wallet sold?+
No. A balance decrease proves only that the observed balance changed between compatible monitoring runs. A sale, transfer destination, or exchange deposit requires additional transaction evidence.
05How does HolderOS verify exchange activity?+
Exchange-related activity is displayed only when the system has transaction evidence and a reliable address classification with source provenance. Snapshot balance changes alone are not classified as exchange deposits.
06Which networks are supported?+
Automatic holder discovery is currently available for supported Solana tokens. EVM holder discovery is not yet active and is shown as unavailable rather than simulated.
07Can I monitor more than one token?+
Yes. Investor accounts can organize monitored tokens into watchlists, subject to the active plan limits shown on the pricing page.
08What happens when monitoring data is incomplete or unavailable?+
HolderOS shows partial, failed, stale, or unavailable states explicitly. It does not present incomplete discovery as complete coverage.
The next meaningful change starts with a wallet
See the activity.Understand the limitation.
Start monitoring supported tokens and review important observed wallet changes with the evidence and context behind every signal.