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 0xbd3a2430d4bb0e3c28c6c72144bf06a04a8db4e9b121b1f479e9cb0ad999290c. Chain 2 (Bitcoin): anchored in block 953812 (2026-06-15T17:06:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f5c1e233-a452-48d9-99c9-2631ac7a39d9.json and https://artists.proofprofile.net/proofs/artist/f5c1e233-a452-48d9-99c9-2631ac7a39d9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Der Riesenlolli-Raub [Familie von Stibitz, Band 1 (Ungekürzte Lesung)]
Kapitel 2 - Der Riesenlolli-Raub - Familie von Stibitz, Band 1
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 0x043ce85d57d8c3ff814ddfa9d700557c7d803298111934b07964927d68956750. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEXO52127673.
Kapitel 6 - Der Riesenlolli-Raub - Familie von Stibitz, Band 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf18350caa74d9f817dd5c9fc0e3ec1992aaa2448297b12fa9c5c1dc32cb432. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEXO52127677.
Die Ganoven-Omi [Familie von Stibitz, Band 2 (Ungekürzte Lesung)]
Kapitel 3 - Die Ganoven-Omi - Familie von Stibitz, Band 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea344831ff347315ede3b65081f7aba2eef0af5d52cec8c31bda7b31758c4dde. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEXO52110100.
Ein hundsgemeiner Polizist [Familie von Stibitz, Band 3 (Ungekürzte Lesung)]
Kapitel 2 - Ein hundsgemeiner Polizist - Familie von Stibitz, Band 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403d79ce0b817d8e7e53ea724aa2d0619ffba9982ab0c5296adb1f2ae1cff404. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEXO42139934.
Kapitel 5 - Ein hundsgemeiner Polizist - Familie von Stibitz, Band 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x838d499c5787ed1e1ebcc3dc58a148746b52134fc7b1bbd16c9da589a8ed1249. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEXO42139937.
Auf Golddiamanten-Jagd [Familie von Stibitz, Band 4 (Ungekürzte Lesung)]