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 0xbd3b199e63d2d2f1eeb7d5e0b52b2336f29ef8d99d9a7c213f4ff446052b218a. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a6a5acd7-19f8-4926-a02e-9b88caeb24c9.json and https://artists.proofprofile.net/proofs/artist/a6a5acd7-19f8-4926-a02e-9b88caeb24c9.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 0x060c0a424668b07514ede0b603beddf6cd71038689e6bb364a9f8368968bf3f1. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCADS1832361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae74ce296e6123be59501dc5a8d8b44a5a1642a23a388bd5a8de6f2d0ed5b80. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAEF1934932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc983803404090a45196875324d641dc9cace6dea002a85ca1e9ace916c27a91. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-21T16:31:21Z), 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/TCAEM1972356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc983803404090a45196875324d641dc9cace6dea002a85ca1e9ace916c27a91. 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/TCAEM1972356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22561c63e3550d67df9a33b44ebe7877ee2632620ab1f68e4c01fb2173227ddf. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAEN1945234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f80cfbd1460d020dd43f897a25f6fb6a3c0f81a6b8f1951346b3b738790850. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:06:25Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX872226204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f80cfbd1460d020dd43f897a25f6fb6a3c0f81a6b8f1951346b3b738790850. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:54:35Z), 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/FRX872226204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa6e898876962107f6afc7d262e84a1b9519c7954e370ef775e6b47013e4886. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FRX202336122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba1a67bcc87022d2018b4f9ccaf8e8360f0daa7c360056acc86bdd784198cc30. 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/FRX452369980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed98f54ab58f9b654842f79d11d55390dd7267458d8b6cea0b3260c4e2bf296a. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FRX452369981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee8f032fb6a95a89a94e0454ce399a93ed23fc1ec04a753f77a1715cb42b319. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:27:14Z), 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/DGA092213790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba1a67bcc87022d2018b4f9ccaf8e8360f0daa7c360056acc86bdd784198cc30. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-21T09:03:54Z), 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/FRX452369980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e4252a96959834c76dcb14a3fa319173d4c549b5c5be1450aa4fc34603bcfc5. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/DGA062218867.
Locu Loco (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d71f311f48817174adc1412f1db950b54465831d8b5d13a1232c985c6a7a934. 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/FR2X42598809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c740bf942d0e0e55f96fc7675a54fc4395b1356f06ae83caa13837136fc86b4. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T21:00:07Z), 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/FR2X42598810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d7865e320763020dafa01004aca52038a16bacd18d93403b2256f177f22bff. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/FR10S2472141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd179771a6d9eda6f88737735e302f9dbf785aa7c02e84418019a6803ed24f76e. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DGA0P2495492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4faad63611657eead52325ef897ccbac325484e3af16fc729ef1cd43aa2e0f3b. 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/FR2X42598811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e0d9eea01c3972db192cebcfddcb744f9d43ae1ead835000cc3175d633d675. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FR2X42598812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec9ad82b3f59337abb686235d403a16d15468c0b2fc537a12b89bd8164faabe. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR2X42598816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb5b0bd89fd7a232bbd928d95b1a374c690ba9a5f4b49a9a3e87d095c221b18. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FR2X42598818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a8101a132b1d2fffbfe517a182acff0c776815fafcc07f378b37981477d1f1. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/FR2X42598819.