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 0x810998e71544727098b7e8e5cb120f03ba008f58b78ed3e70439feeb4c039766. 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/4218697f-4f1f-4c66-a025-8a246f350df9.json and https://artists.proofprofile.net/proofs/artist/4218697f-4f1f-4c66-a025-8a246f350df9.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Kapitel 12 - Tierische Gute-Nacht-Geschichten
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 0x9191faff1fd7963f556a20be39d8ff64c9d667fc23e65543a28242166c1eb3ea. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEZZ42153730 — a six-check JSON result.
Kapitel 13 - Tierische Gute-Nacht-Geschichten
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d8e20e6e31c0d25e6692482e0dfaef987ba7eed58d3ed0e773ac6f2179f02d7. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/DEZZ42153731 — a six-check JSON result.
Kapitel 14 - Tierische Gute-Nacht-Geschichten
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2cafa0c6da999f37f8c7e31d9072dcec4e032763ead610f485e3463a0dadb6. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DEZZ42153732 — a six-check JSON result.
Kapitel 15 - Tierische Gute-Nacht-Geschichten
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2635ff4217d7943fa89d4ff99d6dac55baaa6b8036798e962e621aa40257c0c6. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/DEZZ42153733 — a six-check JSON result.
Kapitel 16 - Tierische Gute-Nacht-Geschichten
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614c868b48c6264fb9ebdcaf8fbc3a2c30c4cf52a56cac80dd651b642b288770. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DEZZ42153734 — a six-check JSON result.
Kapitel 17 - Tierische Gute-Nacht-Geschichten
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcba599917b8efd66c983c89eeafc7b2a9f696b24353b39f0d1c07d9fb40b160. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEZZ42153735 — a six-check JSON result.
Kapitel 18 - Tierische Gute-Nacht-Geschichten
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x526d68fd4e10b1157b34b9501b08b5654a91a5317252025b3986a3174236dc7b. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T20:40:29Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEZZ42153736 — a six-check JSON result.
Kapitel 19 - Tierische Gute-Nacht-Geschichten
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd930909b9b0fe921cdc1617d542ddf9bd8e67439e42387f907e37f6e83f1f495. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/DEZZ42153737 — a six-check JSON result.
Kapitel 20 - Tierische Gute-Nacht-Geschichten
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef9ec415678d2cb8fde510416665286eea777185f0c9d96565aba848996b51ea. Chain 2 (Bitcoin): anchored in block 957569 (2026-07-11T12:44:25Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEZZ42153738 — a six-check JSON result.
Kapitel 21 - Tierische Gute-Nacht-Geschichten
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de565fcbebe9ac302564a85dedcbed0b16e9b29fd1f2e31cb3d26057df83246. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DEZZ42153739 — a six-check JSON result.
Neue Tierische Gute-Nacht-Geschichten (Hörspiel)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1040363226dcb98a7966226e7a7740b41b8730920c17181eb1c31fd51fa11ed8. Chain 2 (Bitcoin): anchored in block 957558 (2026-07-11T11:36:38Z), 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/DEXO12248514 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84cb7092ab3770038e95ce767a671abcd0d01cd01207f5877e554838cba8abb8. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/DEXO12248515 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d5acd08cb833264b172a64a1e97a3ca993f0aedb8b447e8376de61fa1bc013. Chain 2 (Bitcoin): anchored in block 957564 (2026-07-11T12:19:47Z), 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/DEXO12248516 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a6c67a82d81d771ab1f977ac0a6ad79646b9340535ccd32cea17c45fe52a049. Chain 2 (Bitcoin): anchored in block 957564 (2026-07-11T12:19:47Z), 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/DEXO12248517 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812f5462bd6f02616556589a51e25e880f936d19d3651366f59e569f704261a3. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/DEXO12248518 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3e0541029943a65681641cf3b33cca68ace043dbd81cbce3e728152691e71f. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/DEXO12248519 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6462c36301aeb423afc626d0fcccbe025f4420ee486ae2d2354c87e2fbed101c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/DEXO12248520 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f0132fc1b41d63b8b066e4990910a03e77ef46651ad43f0f5e32bda8fc406e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DEXO12248521 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb3af1b951e2d761667143f1c284d3c5f5c7c2aa236ffc908f36d6febfa45f70. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/DEXO12248522 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a68b1a81c4fbfc87a98af53cbbdade89ccd4318d9f539181620c09a236778c. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/DEXO12248523 — a six-check JSON result.