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 0xa29483c026cb88d200ba2fcf2a16fcc78ff718d43e7a3cc80c5557bb3363630e. 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/e60e19d8-b0c1-43b3-9d20-c39c5af3f5e4.json and https://artists.proofprofile.net/proofs/artist/e60e19d8-b0c1-43b3-9d20-c39c5af3f5e4.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 0x2c21b24185b16b25787055a9a967b2f0ceaab43267ba09362747fbe8c6a7d7c4. 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/QMANG2231452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ef43ed29bb79f98de080c850dad882185fa9e73fc3df374d556febfedca1f3. 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/QMANG2224985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b580a6890c3dcee5abf92dbe8eb6390c4b7ff70cd6e064dd1ca648169b0e8f7. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZTVM2304912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c27d1cb35a3c4b36b9d003a44882efbeda921c2dfc20cb4a298d4f7b05ecf4c. 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/QZXYG2306970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b7aa73cb28c3b06b0e3360cd60544f2f3df8bc251bc329b235c4cfb95963e5. 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/QMANG2203862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ffa99b4744bcaad0575bad786236231781ac408863e3d1179989ab2f22c53d. 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/QZTPX2361698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b40a631f83b81f4c0e37b55ba427e7aff0f1214e204f333faca920ecf95e94b. 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/QM3DF2289474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be961aa297f4895b2a0f3aa5fafe69bb6ef5ab6627704493a9d7876940e9412. 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/SGW502354327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa794d551a6c53533cb11424efdb4db5a807c763e423830aec2a574cebc9c71. 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/SGW502349737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb615e7ba0470e43e0d94ed6e41feab418379a360cc0f247845fc29441b4baa9. 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/QZNJY2364101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3447d0736e853d537c016fac5b55b6ca9e66af82cf42a2a7ce10aad4f7155b95. 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/SGW502335158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d53b764b8f55f879afe751968ba6bf0a468c80f738418bda16d822fa6fd32db. 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/SGW502335159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6549dd85e0e1e13bc58717bf1ed64bfe1357ad215ae7718149a2302434ece15f. 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/SGW502335122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4531fd02e56ce1e54836a967c418b2f2cb89c25f42956459ec0937fee1682ac6. 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/SGW502334267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac09a1ae271d0ddce27eb7b99faf5216d0812f7e0325ee03390853e96bde405c. 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/QZNWS2302867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87613d1c2655babe5555c9ab617b345a3278e58174acea3f6a542675bb225894. 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/QZNWR2383728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dadfa9b9f9de05e618f0a09325c01400d937c1071655cf694297250c7f19aa1. 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/QZNWR2388448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c0b8514b662e9d2256198d90c1dca8e83cd89d97b23bc2f3a0897f3e4385204. 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/QZNWR2328894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9776db167fb763e9047e15f9084242c7a95ba3453c1839f0cb6b0ef4412fc75c. 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/QZNWR2325596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39dea5109d7f32fe4b70506b1afb006ca032edae1f78fcfc77f79d1af7f74b0. 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/US3DF2426122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370fd633755e2b4e2c2aab3f964c464d15ad6b37d60dd80188e459866ee70f47. 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/QMANG2497407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac3c3dc6975c547c72793b8aa19c9950a959acabed267283f1c3c0a6244f45d4. 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/QZZ972485889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c30a99cbcac7d197b81fae2097778a0c9adbc4bdfc3ab41be1d74f0bf70c0d2. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/US7VG2408474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f9583b7cb3ee72612f9d2280650a4a500acaf8726ea8670c8c180d63a30ba0. 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/USANG2477357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1201966382db4f66d05e6beb1acc7cb8eb4a32a04499382d546819eb13d776e. 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/QM3DF2472804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f661ec8b8007b92137c6bdba53749ae35c4ebe5f2b1c7d8f259257816a7d801. 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/QMANG2451265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63641afadc985635f1303b0d18e6164297dd1f68132aba073383ba8d8e1305e7. 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/US3DF2423824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f8675691e030d32f1ac717e3d94c28d4e826a3c6559de029c66ad4d10c3fb3. 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/SGB502397294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c1df6a4f847613567da303854e1665ec1d7d58552f00139600b3df2b02eedbe. 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/SGB502397224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae6b0fd5fa5be17b56a3d0e23a851d9de4723738135c82e5497520ab20a996c. 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/SGB502397206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5f704c20fc5b83880065a487b715e44e965fe86fd468533103cc93326fcb95. 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/SGB502397147.