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 0x07b101409a003f83f02ac9f95d08f1fd7541f862352496db3ebeec08079e3aa0. 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/ccbfb7aa-a327-4430-90d8-908838a18cb8.json and https://artists.proofprofile.net/proofs/artist/ccbfb7aa-a327-4430-90d8-908838a18cb8.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Drachen erwachen - das Fantasy Hörbuch (Sturm)
Kapitel 01 - Drachen erwachen - das Fantasy Hörbuch
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 0x46615550ae7a46a2f254369c7d896883bac0f9fe7fa615729445dd7fd3ff080d. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DE1JR1123382 — a six-check JSON result.
Kapitel 02 - Drachen erwachen - das Fantasy Hörbuch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b33c44260dc4c92f08ecd7e035936332ab6a99de5734109b89b32082bd1ecf. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/DE1JR1123383 — a six-check JSON result.
Kapitel 03 - Drachen erwachen - das Fantasy Hörbuch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ecbdeb199c1ac28fe457eb584e57ebd3952b207c1fb9f1c280e40f01f2b588. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/DE1JR1123384 — a six-check JSON result.
Kapitel 04 - Drachen erwachen - das Fantasy Hörbuch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d52a1f362896b77a9ca3ff369a750962d45acda45f69c8ffc8ccfc5142be13. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/DE1JR1123385 — a six-check JSON result.
Kapitel 05 - Drachen erwachen - das Fantasy Hörbuch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e8c8ec002c083d50fd909e9e0ecd2ad3059dfeb7655bc232b794271d084b34. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/DE1JR1123386 — a six-check JSON result.
Kapitel 06 - Drachen erwachen - das Fantasy Hörbuch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x454132a109733856e032a0f3fd519ea4480d217932524aa956de5c2b082f826e. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/DE1JR1123387 — a six-check JSON result.
Kapitel 07 - Drachen erwachen - das Fantasy Hörbuch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943e2e3a7dbafd4af020beae8c553a3c5b3f36530d84e116f4b8c3f7f819a23c. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/DE1JR1123388 — a six-check JSON result.
Kapitel 08 - Drachen erwachen - das Fantasy Hörbuch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab8cc446031e2a22acb3be8eadada3c209efafd09c0d0ff2add588c7d778a53. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T13:52:01Z), 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/DE1JR1123389 — a six-check JSON result.
Kapitel 09 - Drachen erwachen - das Fantasy Hörbuch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc35238ba74521afad05e3845c30e8994740825990aa779345a57337ed3b3ed11. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/DE1JR1123390 — a six-check JSON result.
Kapitel 10 - Drachen erwachen - das Fantasy Hörbuch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15bf18b6d01aa01243581df4361312e31c4e44076182ca6b9fd9e54a391090c9. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DE1JR1123391 — a six-check JSON result.
Kapitel 12 - Drachen erwachen - das Fantasy Hörbuch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408943effe1c719358a784d401dede16fd8cbade3b11e7ffdce72c8680bb7558. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/DE1JR1123393 — a six-check JSON result.
Kapitel 14 - Drachen erwachen - das Fantasy Hörbuch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf8edccfbf004fe269c55d5b47039e8b5c1821aef42d17433d60e99eef0973e. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DE1JR1123395 — a six-check JSON result.
Kapitel 15 - Drachen erwachen - das Fantasy Hörbuch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96de9a755b523101ae8feebbd6074d798b1946d29289b461d3b5309832dabdbc. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/DE1JR1123396 — a six-check JSON result.
Kapitel 17 - Drachen erwachen - das Fantasy Hörbuch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x077913915a09f08383f9ea28c33b67e37e4a62524e58839f3c1f6e55df33f402. 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/DE1JR1123398 — a six-check JSON result.
Kapitel 19 - Drachen erwachen - das Fantasy Hörbuch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57810c20263b8a9f284ae332a768baaae158816e9bafc481c909f7d679e9c4ae. 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/DE1JR1123400 — a six-check JSON result.
Kapitel 20 - Drachen erwachen - das Fantasy Hörbuch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ba2b4656c9001b9fe0693f4fac5618f5e1734c67b819bfa81960707b2adc5b. Chain 2 (Bitcoin): anchored in block 959063 (2026-07-21T21:45:32Z), 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/DE1JR1123401 — a six-check JSON result.
Kapitel 21 - Drachen erwachen - das Fantasy Hörbuch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8fd4060f78f1256f98afb0e8d171bcc72eceab89e11422d014e5718ea483f41. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/DE1JR1123402 — a six-check JSON result.
Drachen erwachen 2 - das Fantasy Hörbuch (Sturm)
Drachen erwachen 3 - das Fantasy Hörbuch (Ursprung)