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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x458ac07572f1786fda616263059e84480b05f651a54ab00ae1833024c1417bb4. 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/e6750f7e-5bab-46a5-8196-32c25d8cd002.json and https://artists.proofprofile.net/proofs/artist/e6750f7e-5bab-46a5-8196-32c25d8cd002.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a1fad5e8959eb3601028b4375e4a38576806339a1483fdd24b0ae7de1736ca. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/RUAGV2405525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6339faea9d70c76731ed344401c1ae4fe6dc5783f7615284fc011ea296b779e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUAGV2405054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fad4c5b9683fcb34723a80a84ee44122f88fb44040f12f39fd2f4af4bd68804. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUAGV2402103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x270b57aaebbf8b6467ba9673c67dd811b6ce92f044d0ff382f9f28a0fb6fe1c7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUAGV2400868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b02e6303f3757e39d8817d1ed3a509443ea7ca9d4820f3426c1d611e9e08b21. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/RUAGV2306327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ae69ddf547d9de944c28150c16ca287c326b98f5255986081323520c19830f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/RUAGV2305038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe649cdea1c3b36c54b73a7b4e6298a9ad630bda9cc2d85249cadda5cd095f380. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/RUAGV2302904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb47acc47e7055d8c020dafab1e102a87ad3b5fd0391f5382c8e54b14954f716. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/RUAGV2300855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85c96c77d4bf1d643511fe8ec06171a685b4e49ee60c8afadcba89359c92bb8d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/RUAGV2300856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9942e28ac1644ccd40508974f1d4532dc8158317d2eacb7d710b2a7091e785a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/RUAGV2300857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x606accd26882a4c2709acfbfc202eb0c260bd98233df77c2bf11717343f35195. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US7VG2351921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8173d1751b317c7bf8a3f133d53932276c4b2051da089bb414c7857462e7cd1d. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US7VG2351922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef1103770cc5be85790fb93c53869d9958c387245ca379d946a8df17d80d9b8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/US7VG2351923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1098a9b649eaec0d6dde67e1400825b8a9c0e6eb280cc9a6f0e4879dc714ff62. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US7VG2351924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03d0e26fb6f1c6428be21adecaff1d28b4d528f8a2518c55ab2e7a86e006c82. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZW9K2262593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad3a2162098128fcba9f3d7ecaa7b23ffe53facebc181991fc10e2475f32c995. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZW9K2262594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ac28f38c205c9fcdf23a486a5edb0106afac2329c6927ce18d1b57cb4c12af. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZW9K2262595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89f340b299c846d258249efbacc6a440069326ecd4841dbb9947ae16aad20d3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/US7VG2530221.
Вторая весна (к/ф «Ландыши. Такая нежная любовь»)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f0729ee63d44a5377515e498a766c0eade7858714175b2e819a42ee4f41030. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUAGV2409820.
Бегство в Египет (Из сериала "Преступление и наказание")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27799ab847bd1f959f10705d902713d195960e777dba0009f333b1a4262e96ae. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/RUAGV2410239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x486c315566b9ff2bfb470288cb6c49ac2802682da579872815d0cfaaed2eb7ca. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/RUAGV2408806.
Студент (Из сериала «Преступление и наказание»)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61fe60d8e753fb9d3fbbe7ba3b4b1a5bf67896e75c4ff909ab9e0077d56032f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUAGV2408950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c3875d8cc75c8af59828c682370c7561155221398054c110f5b4f6ec48a093. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMZ92374128.