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 0x53c18b0f91bd5e43250126b550f0dd85990302030e0c6c87db20c71f29ddc24e. Chain 2 (Bitcoin): anchored in block 954010 (2026-06-16T21:41:36Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/340f2fd5-830f-4a2e-a920-120a6cdd3f99.json and https://artists.proofprofile.net/proofs/artist/340f2fd5-830f-4a2e-a920-120a6cdd3f99.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Aevo Wissen: Beispielhafte Fragen aus dem Fachgespräch
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 0xf50be5d7a40cf12e74047b5ed2214c89dbb13c0a094c100b3f28c4276bddb299. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/DEAR41614812.
Prüfungsrelevante Fragen und Antworten der Ausbilder-Eignungsprüfung
Kapitel 1: Prüfungsrelevante Fragen und Antworten zur Vorbereitung auf die Ausbilder-Eignungsprüfung im HF1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb5f58ec61f00b9fa659cd295aa5b404c66cb5c199f224d0e724f3022c77fde9. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/DEAR41523866.
Kapitel 2: Prüfungsrelevante Fragen und Antworten zur Vorbereitung auf die Ausbilder-Eignungsprüfung im Handlungsfeld 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ca2f16eadc6a7ab934ea59d934971fea4df545a3d65773e07cb58cff1453b6. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/DEAR41532581.
Kapitel 3: Prüfungsrelevante Fragen und Antworten zur Vorbereitung auf die Ausbilder-Eignungsprüfung im Handlungsfeld 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ca83255f7d6a9b2550349fd04df5847e8294eb719f504471339599aadf5c66. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T16:12:29Z), 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/DEAR41612274.
Kapitel 4: Prüfungsrelevante Fragen und Antworten zur Vorbereitung auf die Ausbilder-Eignungsprüfung 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa07e661fb06c69f1c19300c7e1d895828d46f991327b5a7fa3346d9f8e1f885. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/DEAR41613045.
Tipps zur Vorbereitung auf die praktische Prüfung der Ausbilder-Eignungsprüfung (Handlungsfeld 2 und 4)
Tipps zur Vorbereitung auf die praktische Prüfung der Ausbilder-Eignungsprüfung (Handlungsfeld 1)
Tipps zur Vorbereitung auf die praktische Prüfung der Ausbilder-Eignungsprüfung (Handlungsfeld 3)