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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb28cdf3c31fba4c261acf3eddf055a4e9d060673857e77648b91918af1bf0eb8. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/db340b4f-000d-4580-bfde-e32eca8b6a4f.json and https://artists.proofprofile.net/proofs/artist/db340b4f-000d-4580-bfde-e32eca8b6a4f.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Du bist jetzt ganz bei Dir – Vielfalt der Entspannung (Band 3: Entspannung für Schüler ab Klasse 9)
Du bist jetzt ganz bei Dir – Vielfalt der Entspannung (Band 2: Entspannung für Übungsleiter und Coaches)
Du bist jetzt ganz bei Dir – Vielfalt der Entspannung (Band 1: Entspannung für Berufstätige)
Gute Nacht: Entspannt einschlafen, erholt aufwachen (Band 4 der Reihe «Vielfalt der Entspannung»)
Führerschein erfolgreich bestehen (Band 5 der Reihe "Vielfalt der Entspannung")
Führerschein erfolgreich bestehen.1 - Führerschein erfolgreich bestehen
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463c2ad7693946bae3bdc8b0a5cffa106986ccfd4683f4d759e771caf36b58be. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWM10162977 — a six-check JSON result.
Führerschein erfolgreich bestehen.2 & Umgang mit Prüfungsangst.1 - Führerschein erfolgreich bestehen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a06927ebe00294859c0e00000ad5cbca50f9a54c5de9c826217f33703438274. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWM10162978 — a six-check JSON result.
Umgang mit Prüfungsangst.2 - Führerschein erfolgreich bestehen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43db58fcbd6ed53ce5b03a9e99b2132f4a231fb191b3a3d34f69709531bc24a2. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWM10162979 — a six-check JSON result.
Umgang mit Prüfungsangst.3 - Führerschein erfolgreich bestehen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60408df2736b4f5234b99d3dd210c574f7de8d75bc871bcf45a34452c31360c2. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWM10162980 — a six-check JSON result.
Umgang mit Prüfungsangst.4 - Führerschein erfolgreich bestehen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ed48380675374262fa2703b7a143e366e2f3655e33069cb17ad519daaa691f. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWM10162981 — a six-check JSON result.
Umgang mit Prüfungsangst.5 - Führerschein erfolgreich bestehen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a60f906ab32f38aa55d514c591f6364e6c31ae34cf5d52bd356f7e14651c887. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWM10162982 — a six-check JSON result.
Umgang mit Prüfungsangst.6 - Führerschein erfolgreich bestehen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x974a58f5de47a914a24173925c456a7c368c25d05134e7db12c6aabd18cdcaae. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWM10162983 — a six-check JSON result.
Umgang mit Prüfungsangst.7 & Dein Weg zum Führerschein und wie Du dranbleibst.1 - Führerschein erfolgreich bestehen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf0b2cdfde0ba78a74edd5e6f64d1e3563fbaa953e0b6ec09b23fc85bfb94e22. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWM10162984 — a six-check JSON result.
Dein Weg zum Führerschein und wie Du dranbleibst.2 - Führerschein erfolgreich bestehen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2fa53e0bb3819f0ceedcc68006a484cf945b2b354fd9a78c18aa82aa49c621f. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWM10162985 — a six-check JSON result.
Dein Weg zum Führerschein und wie Du dranbleibst.3 - Führerschein erfolgreich bestehen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2524ccf5cbd50e690972ae748aa101f0f50ec89431ed9ebe66eb507179b815fe. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWM10162986 — a six-check JSON result.
Dein Weg zum Führerschein und wie Du dranbleibst.4 & Mentale Vorbereitung: Theorieprüfung.1 - Führerschein erfolgreich bestehen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ffca2ce93fe685ee5337ccf89890a1b0c386101a90c23f217b59d9be78b3e24. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWM10162987 — a six-check JSON result.
Mentale Vorbereitung: Theorieprüfung.2 - Führerschein erfolgreich bestehen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8ad2b68345b475a54c1979fdcaf97846ed40cd1890d8a11de80236ce8d66883. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWM10162988 — a six-check JSON result.
Mentale Vorbereitung: Theorieprüfung.3 - Führerschein erfolgreich bestehen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01450e011f5c605ec546567ec683feb3007068bafd7ee5c61c43410fe1c524bc. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWM10162989 — a six-check JSON result.
Mentale Vorbereitung: Theorieprüfung.4 - Führerschein erfolgreich bestehen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30b669e522d44dc059a5e14ec6ec6ec7c85c1a0c05ac5ca9aeb46c62161958c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEWM10162990 — a six-check JSON result.
Nach der Schule: Relaxt in Deine Zukunft (Band 6 der Reihe «Vielfalt der Entspannung»)