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 0xf5eac6123278eec85238fd7e66a0d8366479706b981eded2033d16f4f3761468. Chain 2 (Bitcoin): anchored in block 953616 (2026-06-14T08:58:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1950676c-e8c9-4695-9cc3-d7d1f8a7eb4e.json and https://artists.proofprofile.net/proofs/artist/1950676c-e8c9-4695-9cc3-d7d1f8a7eb4e.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 0x4fe36e06c1e36dca8ec3eee9f4d48a2456382398ec87bbca446f21f9de968003. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/RUA591500567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53fb3f64fba9ad5f7bb67d608cf21f8540ad2acb1b81b038e23ad67141eb89db. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:50:03Z), 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/RUA591500568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc47efd6cc4367487f0996ebdcd708fe23812cf1ffd9c032c8cf787acbec4a2. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/RUA591500570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72d056ba3da8ad00d895e13326a502b0e919c8c04dda723b1e12cf4013228e5. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/RUA591500323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e762803608a4bf91cae394588c55b800c6ede8cd4b7cccf781bcd6b400a150. 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/RUA591500575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c2402e44f9cea98b57586d969e64551c8b48aa1d667502778fc262eb8a0d2d4. 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/RUA591500579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x386eee89ccf3674ce812eba61edb0de5effd0d1816482e2672d4f3cec6f1661a. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/RUA591500581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf87b9f73151e8a3592543ddfc1f1c763a171ede4e671fcb2b23494e00b0f9a39. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/RUA590900205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0177ce833b9bfdc2cd78b42656985951c8bd72b8e50110d2a3296adc987fe518. 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/RUA590700082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d4b59e70952dccded2eaaf006b7f6a60e74639dace9b2853c365b57245e96b. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/RUA590700192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc03860f8fcea8dd5c1a9ce310efb8610d82671b7afa87d92c027e5522d2fa3. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/RUA590700209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e48a1f3acc7c951102e1675c801b9600f24a6567325655c547337d0dfc67b3c. 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/RUA590700166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6734d43d618ce26e7dc161132afb75ac2617521ef67f518466f328c2175badd6. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T02:09:40Z), 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/RUA599800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a122d72d9f42dfe3c44dc07385d79caf4107579c8e01c1e33928a8c247237f. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/RUA590700135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9ed576752c7c145959229bb373bec8344ed2d11acc6d7d6e0d8210ed34e564. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/RUA590700136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e45f87ca049f0c6392484e31abee00e9b6119e0f2a8eb2cad0b56c9cac03711. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/RUA590700154.