1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x978f40a225c7b086e661480285ea64bb8fb0ea9ac7f65a6f41e801d86447d91d. Chain 2 (Bitcoin): anchored in block 954002 (2026-06-16T20:47:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3273b6cc-db08-4985-afc1-1ef2433e2b91.json and https://artists.proofprofile.net/proofs/artist/3273b6cc-db08-4985-afc1-1ef2433e2b91.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Blaulicht Klingelton - Martinshorn Polizei Feuerwehr Rettungsdienst - German Police Siren
Normal Digital - Iphone Klingelton - Single
Christmas Klingelton - Weihnachten - Single
U.S. Polizei Klingelton - American Police Siren - Single
Süßer Hund Klingelton - Hunde Bellen Kläffen
Blaulicht - Martinshorn Sirene Polizei Feuerwehr Rettungsdienst Soundeffekt Klingelton Alarm - Police Siren Germany
Dezent Geschäftlich Normal Ruhig Digital Minimal Beep
Miau Klingelton! - Süße Katze Sound Für Handy (feat. Katzen Jammer)
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907cbdd26d2f4581c3d43e385c1c7aa7d17319e2ee865a30b511c6c5abe66cac. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:01:14Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR6V81336669.
Valentinstag klingelton (Ich liebe dich)
Schöner Klingelton! Dezent Ruhig Normal Beep Für Handy (Alle Hersteller)
Schöner Klingelton - Smooth Jazz Für Das Handy (Alle Hersteller)
Noch Schöner! Klingelton Dezent Ruhig Design Für Handy (Alle Hersteller)