1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x6520d1a943da9f6a32fcf7ded9fed2a33e619327007e164f5fdf0f69848d94e9. 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/191b43c3-bf89-40c5-b64a-8a96ad574848.json and https://artists.proofprofile.net/proofs/artist/191b43c3-bf89-40c5-b64a-8a96ad574848.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 → block OTSBitcoinBlock must exist at that height 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 0xe1ef995c2b1d0f8b4b958ba64d1f978d1723b6c6ceb6680e98375cd9daaaeadb. 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/USCW60701604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca28f2a88a2d78167bcb9d30f59cdf423d26fe8570108082edd1cb167288b41. 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/DELO20911542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e82eb2b47aab10723670ae308d284b2b13543f9201cc30d9fa228fa1ff78967. 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/USCW60701601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738001d8bc7b9d722ca04d230a6f200fd3b526b1605acd342b2009a3e08ee2e0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USCW60701602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaaf85b4deab77338023935d8a73f39a188cce5b75e69cbdc77cedaefcf5a83f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USCW60701603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ef995c2b1d0f8b4b958ba64d1f978d1723b6c6ceb6680e98375cd9daaaeadb. 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/USCW60701604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf881e6f6f5d3cc7ae6be1858d1d962f4600c47fc3f9c383acf44f2c631824b37. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USCW60701606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7c7ed779fce852e5b0ee246e5d435c175d771c39a211ff09d1407887406468. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USCW60701608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb40aa6ff38587bc9cc97e944af95190e71ad95b906729b27c99c61d670db87da. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USCW60701610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e5e10a217bae0ebd807dc5e13cbde8d69c0f5f99ee4f94fe9abd2dae19fef89. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USCW60701611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4853305a3a830cc9eacfa9ccefeec4b8a41fe6bfee616568922ab8a029a1d804. 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/USCW60701613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf270b2336abf403d370dd1099f4eb35de519419dec54185bd6ea094dddb7da77. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USCW60701618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ef995c2b1d0f8b4b958ba64d1f978d1723b6c6ceb6680e98375cd9daaaeadb. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USCW60701604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a1cf9ddfcaa205ff4f7a708e8945585d95485fe29a5c1812e1ce609137a40d. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/USCW61204116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e0a70e5dc741216c36d74d4571597907eb91dee179b9d25073869038fa6037. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USCW61204542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd554336f5b4e2f91202eba1ad101c3f1aeb0283d7630772fdbce1c9a4648d379. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USCW62268601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe85bbba2e2398225c676383d7fef9fc44801febbab662dd46cd73d263ed999. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USCW61204101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8553d66d691b1f8124df10227df587ec314fca64f8539b940ecf7426a184bfe0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USCW62144201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5fe077ea01bf25a481e7a7e5a9ecafb3fad269808f8a5a04c374a13c53564cb. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USCW62268201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6725fddcc89af292f1398e712b40c17eab7d6a03605ac874da7e95d37b8ec1e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DELO20910805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3feeb02e956cb8139093abee2c6125048e7c5373358b56933f3e699a3e123284. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DELO20910809.