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 0x36ddb0d35b10384a7dae0c30a8583d54b80097ac4f3bf9d22f6e1b4d8cb5342e. 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/cfe3c76f-fd76-4e54-9cb7-cf461a3eceac.json and https://artists.proofprofile.net/proofs/artist/cfe3c76f-fd76-4e54-9cb7-cf461a3eceac.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Die Abenteuer des alten Sherlock Holmes (Band 4)
Die Abenteuer des alten Sherlock Holmes (Band 3)
Kapitel 3 - Sherlock Holmes und das Klassentreffen (Die Abenteuer des alten Sherlock Holmes, Folge 17)
Sherlock Holmes und das Klassentreffen (Die Abenteuer des alten Sherlock Holmes, Folge 17)
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 0x60a514a54c54cbdc851cc98d096f64fba5df7da1e7cbd3d1fb145302cbbdd9b2. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/ATDD22501099 — a six-check JSON result.
Kapitel 14 - Sherlock Holmes und der Zauberer (Die Abenteuer des alten Sherlock Holmes, Folge 15)
Sherlock Holmes und der Zauberer (Die Abenteuer des alten Sherlock Holmes, Folge 15)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6f40938d47641cbdeddcd211f3b11c8ec5208c386a5be6baf7672d0e3280d8. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/ATDD22486628 — a six-check JSON result.
Kapitel 15 - Sherlock Holmes und der Zauberer (Die Abenteuer des alten Sherlock Holmes, Folge 15)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a9aa8d557c3ddc8bd263f26d9c1f23d4af5ef37d4378928605a5fb3486bafcf. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/ATDD22486629 — a six-check JSON result.
Kapitel 4 - Sherlock Holmes und das Klassentreffen (Die Abenteuer des alten Sherlock Holmes, Folge 17)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a90347f9bba5c96f2241a36145c2cf38b0203203dacc1d1a29ae064870b337. Chain 2 (Bitcoin): anchored in block 957778 (2026-07-13T00:08:48Z), 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/ATDD22501100 — a six-check JSON result.
Kapitel 2 - Sherlock Holmes und das Rennen von Siena (Die Abenteuer des alten Sherlock Holmes, Folge 40)
Sherlock Holmes und das Rennen von Siena (Die Abenteuer des alten Sherlock Holmes, Folge 40)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549f180de12c1e7fd3914a3cd45bdf755650f998a21f42f229fcf9fe4fb335a4. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/ATER12538550 — a six-check JSON result.
Kapitel 9 - Sherlock Holmes und das Rennen von Siena (Die Abenteuer des alten Sherlock Holmes, Folge 40)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b34fbbd2e49d8e10443b3c8cfd64ea296f19398b4e1e460d4fbf1ae1c0bad0f. 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/ATER12538557 — a six-check JSON result.
Kapitel 12 - Sherlock Holmes und das Klassentreffen (Die Abenteuer des alten Sherlock Holmes, Folge 17)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6959457a8dc46ab2467cac9c1126beceb39997519a41ebe9c8318a26b25d98d1. Chain 2 (Bitcoin): anchored in block 957778 (2026-07-13T00:08:48Z), 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/ATDD22501108 — a six-check JSON result.
Kapitel 8 - Sherlock Holmes und der Zauberer (Die Abenteuer des alten Sherlock Holmes, Folge 15)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0a00ae7f835ee33850b1a795748a961fc16e019052d5a4247921041317adfe. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/ATDD22486622 — a six-check JSON result.
Kapitel 11 - Sherlock Holmes und das Klassentreffen (Die Abenteuer des alten Sherlock Holmes, Folge 17)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9371d54697638406b157e022f42de5e1524f94637e8cf6291371bfbbaee6545e. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/ATDD22501107 — a six-check JSON result.
Kapitel 10 - Sherlock Holmes und das Klassentreffen (Die Abenteuer des alten Sherlock Holmes, Folge 17)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeede20303d840afd245a67a329d4e027d2a2856a97a17bad8e8cc6f6e09b7436. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/ATDD22501106 — a six-check JSON result.
Kapitel 7 - Sherlock Holmes und der Zauberer (Die Abenteuer des alten Sherlock Holmes, Folge 15)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71264fe42acce54544ecdf651cb2863e8cadeed189b279370cde19341722f45a. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/ATDD22486621 — a six-check JSON result.
Kapitel 6 - Sherlock Holmes und der Zauberer (Die Abenteuer des alten Sherlock Holmes, Folge 15)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582c3feee71ed5c952e5441adbc2515228d8ca38d66e3eb100ba1739d61f58a1. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/ATDD22486620 — a six-check JSON result.
Kapitel 9 - Sherlock Holmes und das Klassentreffen (Die Abenteuer des alten Sherlock Holmes, Folge 17)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26bc260b847919263835bc926b872506c82224677a6b090fd4d9c7a6759f50f4. Chain 2 (Bitcoin): anchored in block 957778 (2026-07-13T00:08:48Z), 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/ATDD22501105 — a six-check JSON result.
Kapitel 9 - Sherlock Holmes und der Zauberer (Die Abenteuer des alten Sherlock Holmes, Folge 15)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaebdd18af4c9a2800b7e628c6bf88cb6dca5e7ee39c3c94b90c2f97db5e7055e. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/ATDD22486623 — a six-check JSON result.
Kapitel 5 - Sherlock Holmes und der Zauberer (Die Abenteuer des alten Sherlock Holmes, Folge 15)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b52d0c30e39dee2eb56fca91ceb49aee722b9af5ae01178e11927b9f023c223. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/ATDD22486619 — a six-check JSON result.
Kapitel 5 - Sherlock Holmes und das Klassentreffen (Die Abenteuer des alten Sherlock Holmes, Folge 17)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd25265634cc0a1fdfc83a9125da60e52b853bd7d973b7139f8e50af77b7803. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/ATDD22501101 — a six-check JSON result.
Kapitel 6 - Sherlock Holmes und das Klassentreffen (Die Abenteuer des alten Sherlock Holmes, Folge 17)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7766a5c025516de4e28d0ec08e9eb28fa5f115d62e5bdf23af97519a8ed10c47. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/ATDD22501102 — a six-check JSON result.