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 0x97c12897d51244ca7d933718273b730dfc111ecde04d46c55a6fa018d397da1c. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b0b44bbc-3bd2-4dcf-9641-8b0c0ea86193.json and https://artists.proofprofile.net/proofs/artist/b0b44bbc-3bd2-4dcf-9641-8b0c0ea86193.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Weltmacht Rom - Teil 2 (Aufstieg und Fall eines Imperiums)
Weltmacht Rom - Teil 1 (Aufstieg und Fall eines Imperiums)
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 0x70a95ecae6519c15ee5e081ee2f3ca669d0955ffd0f12a49d834579894e83088. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/DEXR10830850 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e22225b1acd6d64d2f1319af47c64f5235b5e561951a9d8e3b1c47e132cf5e7. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/DEXR10830852 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32eaddc0f2d00a7f8b9234c3b5aa4acafa9d464f237aa386f4ad8aed88c651d8. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/DEXR10830855 — a six-check JSON result.
Kapitel 4.3 & Kapitel 5.1 - Das Reich der Pharaonen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaded24bd66403ba120c2c8875fa60b1c6595e833e38dbaf77ab277608ab3c201. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEXR10830856 — a six-check JSON result.
Kapitel 5.2 & Kapitel 6.1 - Das Reich der Pharaonen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283f7f434c1221fa19e04e899e397d83ae22fad4457dd0e6db339bcf815d412f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEXR10830857 — a six-check JSON result.
Kapitel 7.2 & Kapitel 8.1 - Das Reich der Pharaonen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc61c9b487e49946f863f94d45990d1fc2bf88f32ba1d776df88b513b5602b1c5. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/DEXR10830859 — a six-check JSON result.
Kapitel 10.2 & Kapitel 11.1 - Das Reich der Pharaonen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd36ba23692816f0489d4cd270d2d6e6a1ab4fbec5aa9731b7f159db89d75fe7. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/DEXR10830862 — a six-check JSON result.
Kapitel 11.2 & Kapitel 12.1 - Das Reich der Pharaonen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d3d000d8d795d49bff06429aa1ca6d1d3b2d68410882a78e82ccbbc8174140. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEXR10830863 — a six-check JSON result.
Kapitel 12.2 & Kapitel 13.1 - Das Reich der Pharaonen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d96767c36975840516c2f879a44b0d570a9075c3f7859206b6f8121c7dc0a0d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEXR10830864 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb5b79517d11f0a819921edad3e92590af08c63583037a3d379c5473110cc27. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEXR10830865 — a six-check JSON result.
Kapitel 13.3 & Kapitel 14.1 - Das Reich der Pharaonen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71514b1d602b9a0879b64f428eb14bafe67d0f5b3b90fca2dc5b7055c1345e0b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEXR10830866 — a six-check JSON result.
Kapitel 14.2 & Kapitel 15.1 - Das Reich der Pharaonen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c8f8faef33e5e4d7f17899f67536ffa4aa5958dd6f1359e2fa9c59b090ff54. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEXR10830867 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5200dea66853387393ccbf20b73e61e764068d85ac6ec5d8dcf51c15d08f38a8. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/DEXR10830869 — a six-check JSON result.
Kapitel 16.3 & Kapitel 17.1 - Das Reich der Pharaonen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381def1ec906f1951fc74cc7401c0238b3e19cf63d127f5e46fba81fed513ba5. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/DEXR10830870 — a six-check JSON result.
Christoph Columbus (Der Aufbruch in eine neue Welt)
Kaiser Wilhelm II. (Der Untergang der Hohenzollern)
Die Templer (Gottes verratene Kriegermönche)
Marco Polo: Il Milione (Der Mythos einer abenteuerlichen Reise)
Wähl' mal wieder! (Das ABC des mündigen Bürgers)
Der 30jährige Krieg (Das große Sterben im Namen Gottes)
Mythos Südsee (Die Entdeckung des Blauen Kontinents Pazifik)
Weltreiche (Ihr Aufstieg, Glanz und Untergang)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38167eba2ad313ee36cf9e43f8a99be016b0498fbfa343d4e5caf8ef67dac010. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/DEXR10839947 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc8e5919b37c372b5aaf5f866b59a97ff6ed44078589459b2b681ce58604de34. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/DEXR10832754 — a six-check JSON result.
Weltmacht Rom (Die Geschichte eines Imperiums)
Weltmacht Rom (die Geschichte eines Imperiums)