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 0xceb82c9ec9306cb9079a2b74d8adc0916088e256442ef1b525a9780abf053637. 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/b6746d98-ac65-410e-965c-804c74b18a8a.json and https://artists.proofprofile.net/proofs/artist/b6746d98-ac65-410e-965c-804c74b18a8a.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 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 0xf58f36c4111e52975a78c2c5613ec877ccdb5d13204cd426b3f27905d22d76de. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAM460411061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f7ce1b65cc5da07de1be8a7cecea1bcd03058880ae5c9f0a10f59ee827a73c. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAM460434935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c8a5970dc8120387333c8475ad73a761001a4b4e7ab5037e4c86a4b9da1ac66. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAM460602511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19028ffeee777a0aed4cfe9a50d2e635d9ff3c9fb695bdd428c7e4961a446fc4. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAM460432561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4d6b09a4e41c73c78d80fa7833ebd24b77eaa4cfac235cd2a6b2a2699e3076. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/CAM460408309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe70430571fd2f54be329e2dc38716bbc0dc673616bd12d165c7688891965bde1. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/CAM460412944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df71f01f231b49fe98d925b49ef21d5ad42bfd15ff5745178059a61238742f3. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAM460432556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e19a82653a41fee5fd50eaf2b1c40c16ff211292740389ec1eb5f4cf4956b0. 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/CAM460432559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f0d2e929ccd7052fd4ed99ba5c2b0b920eaa474d3dc198a67edc5f6f5217093. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAM460412955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a22f24f3d12408547d692686fee3a839f6a4089215edf76283e68ce28278c7. Chain 2 (Bitcoin): anchored in block 958117 (2026-07-15T07:36:28Z), 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/CAM460410971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a26e020ec5bc1c1ee57be8152d59694b12847cde7df8ef9367e4d6ab1a18039. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/CAM460602503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d6ff1499ce10bc8fefdb03288b29145dbc6e413e6b397f5725acb75f05ab9e6. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CAM460412950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe75ade12beb6cce98965209ade01802d64ab62526fea118e8574d6b100173df0. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAM460434230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dfc079b90f05ce22322475fc5774a053636da0370f94a467364785db609a6dd. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/CAM460411414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c0f9471864b85eba6c5d0416bbfb48cc70313cb5016da58e6fb59cf63c85ebb. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAM460432562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9cf7c179b9f602eeafe71d535c2b074109b302ad00b30ee2318ac4d059e037. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAM460432563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63af89e6904144c1acf5281edc6087bc834f8f58314ae954177cceef164a8b28. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/CAM460411415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f10482c33604d024519c8b374cc5f7b25da27d7cd055a32c5c7aa6c2b4143d6. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAM460423091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ccffc6d09c6e28784b832e4d485cb9cee8f6a409e0e484be2a5a28c0298e11f. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAM460410972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db960ff1b261b94f313cb73d1440fd96472b85e97cb239368c476454435a53c. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAM460432564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a331e3cd000679ebb42f3fd34d9d96668b567e88f12602d28be3aeadbeb48d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CAM460411417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7547bf52e8a908b82b3d6baff197d29c1f22c5b7b7bf46671d8edafd429b00. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CAM460411262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45ba80d8baae3b2eeac0fecc75aa7445ef7310f3a5130482415c8c4c73423d5. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAM460432560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab004ba0f8fdc12494bd9bc669f57f2b20fb7bf35db2a89acd51ddb30f9ee20. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/CAM460411070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f29241327d3ab4b751e013da6b941d4cd0334b53880ba9ed6f24853937a7eb. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CAM460428578.
Theme From Doctor Zhivago - Lara' s Theme
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8eb64318a3258ed657268bb28c2cc297882946284d3ae5771a37fd3d3faaf2. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAM460411053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb07e9cdd45af3525adfa928bb0372068b3d7795fa0cd35465041f6997e2f27f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CAM460426350.