thumb|Otfried Preußler (2010) Otfried Preußler (; sometimes spelled Preussler; born Otfried Syrowatka; 20 October 1923 – 18 February 2013)Focus Online: Kinderbuchautor Otfried Preußler ist tot was a
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 0x971b4f0764e9c5ea24af61c86db0cbdd237e21016e12061523e8bb0a907671dc. 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/ce9bb81a-6fa0-4c9a-8622-e7c72601488a.json and https://artists.proofprofile.net/proofs/artist/ce9bb81a-6fa0-4c9a-8622-e7c72601488a.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Der Räuber Hotzenplotz und die Mondrakete - Teil 01
Der Räuber Hotzenplotz und die Mondrakete
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 0xc74b12881aadeb470838893e054af7bfba7ba94ec4cf9f66d8badefb280e2b43. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEUM71806586 — a six-check JSON result.
Der Räuber Hotzenplotz und die Mondrakete - Teil 02
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93881fc8ba39bea5d1412508abcb20352d296f09adf055187fb65e32b5fb4679. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEUM72113024 — a six-check JSON result.
Der Räuber Hotzenplotz und die Mondrakete - Teil 03
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x488b4f591c55a5b128292733b86d18595a4c5982c9840b9596990ebe80cd8add. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEUM72113025 — a six-check JSON result.
Der Räuber Hotzenplotz und die Mondrakete - Teil 04
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x092896c0a7886c85aa1656f0a84b7495b36ec5fd7457ddbb9c3ad4f8e4329843. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEUM72113026 — a six-check JSON result.
Der Räuber Hotzenplotz und die Mondrakete - Teil 05
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe46c86a53af0b78e0bb2029530cd49acee9541b9111323f6ca2bac9ed5cf32ed. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEUM72113027 — a six-check JSON result.
Der Räuber Hotzenplotz und die Mondrakete - Teil 06
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad09e54d4b02a02e385c5cd0bdf69b23ab87bbccb3729346793e7890049384c4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEUM72113028 — a six-check JSON result.
Der Räuber Hotzenplotz und die Mondrakete - Teil 07
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181534f8883a8f334bea39704d62639941c03d1ff12c676566202eb2f0f1d28b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEUM72113029 — a six-check JSON result.
Der Räuber Hotzenplotz und die Mondrakete - Teil 08
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2faa20556598558ea5badbfac22a643f01460d73a56993797d8f5b340a437292. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEUM72113030 — a six-check JSON result.
Der Räuber Hotzenplotz und die Mondrakete - Teil 09
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3c06ae8dd6fb27cb3094f86d7ebd2c5e559f71401ff5f8f94f72c2d7f48ed6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEUM72113031 — a six-check JSON result.
Der Räuber Hotzenplotz und die Mondrakete - Teil 10
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713957ace8f6d2f37769d39ffc7322f40ae93222e13f3722efb9f7e6a99eb10f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEUM72113032 — a six-check JSON result.
Der Räuber Hotzenplotz und die Mondrakete - Teil 11
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610ba91fa52b02ef429443a66413d68ba579de6cc1c960c84f68b70a668bd06e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEUM72113033 — a six-check JSON result.
Der Räuber Hotzenplotz und die Mondrakete - Teil 12
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cbe0df640769c619e8e9272cbfd9e7410c60559981bfe8f4c9cd350c11457d8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEUM72113034 — a six-check JSON result.
Der Räuber Hotzenplotz und die Mondrakete - Teil 13
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e41cfe6398966f0539ad7fed322f973c654ec4a484004cb537228941c92b11. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEUM72113035 — a six-check JSON result.
Der Räuber Hotzenplotz und die Mondrakete - Teil 14
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d82910af8690862daf3b339f15332ed51f407b5743a961c83eac86674423f4d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEUM72113036 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4261896153c30182e87ccf159a2b5562ee105cfea68fd2e19a6145dece0c0447. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEUM71724351 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae38312b8d3354cbc442936c5ad45c325a2b2bea6858dd132a5e3a61f85adcf3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEUM72112505 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ab1958c148f7f33ec90c5f8bdb9b7bf3f4cc87cbeac78b9a6117f3605093bc. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEUM72112506 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b477c5678715170b35b813186f1a190ee75a4bb03c16af6764a1005539db4f7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEUM72112507 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9f670f5fd274462e41bf60ffbd5d2dc2bd75280d812339ba6475ea06a69a33. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/DEUM72112508 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c3fcb585952d88eb4345574026437fe0ed1d093f1bdc88c3f4edc2b2f64891. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/DEUM72112509 — a six-check JSON result.