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 0xec4c67b2303c124ef16678aba13f5c378f37b4eb1c56a81903b49161730449f8. 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/b371a9aa-cce4-4e9e-8039-fcf9b261d8d6.json and https://artists.proofprofile.net/proofs/artist/b371a9aa-cce4-4e9e-8039-fcf9b261d8d6.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 0x65e470530cbc3ec55c854ffdbee2fffb17758051bb28ad7d121e2df10cf12b23. 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/DGA052374391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a29bc39d09d8ac0429317294f15472454f4bf14e007e00666389fea96326008. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZTAT2496971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b21b0ff550df9c37ba1f7a1b6fc59bcd3a780f8c288e939cbf2611e9f2d1474. 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/QZRP42483230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14fa474223c2d131dc486ffb1dac074abd6750ea7d61870a0f7928524ffbfe1c. 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/QZNWX2498184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x887f79dddc698b628252dca20ed9f00b4b25684dcb4f2e05bc5469a046ce30ee. 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/QZNWV2419757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09db914e2014a94e3e0826dd5f7a35bab5c76c58a5a2b9d461742042e61d6f23. 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/QZK6G2280441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd2765acca95ebbd3f54ce6021f799747e6377a26f9696213d5656340f44cd6. 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/QZNWR2470616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec7ec1067a1daae8b11cc63f3462619aad510322acab5615c49f4ad9468da5d5. 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/QZMEP2475207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9643e5b107c60bb56d75fc1e6029a3af63921ed87fc8b7a8afdbe164035b12. 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/US3DF2463348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c4ffd37845efbfa4074c456ee5466daec5a41ace87341a79aa4f44e38ef4ca. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZMEM2457245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643c1eff67bcc5bdaa7686e6839e02dffe878c77fe3a47bf51b590ae005b330c. 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/QZK6J2480360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e26a06b1ad2bff76d714fd04d8d4c4c3098b4de1498f1922018df5bf74c6c8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZK6M2490415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eeb8d34458975854f5d105c3350cdb27c2a50f45469d9baf4864d047fe76a02. 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/QZHNC2413125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabd552009151798ed47769a165d9114100026b7ff769cbfbb2acc9da562eed7c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHN82411096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85d058e99b7446291d4802b5ced6099abffbbec76cb368431abfca9b26cd656. 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/QZHN82218362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f82be2b61bbf6c27f66bb7bc30c63a9d7f537f0a4b34bec7cca2da66946127. 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/QZES82407251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76583b7873edc6c9566df7bc2e452c38da943a81f9d3a93b3e952bd3e009b2eb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZES52489652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa368a40b8f00f0b291199a3fa8d9c9bd6c23c98b9bcbef9232af55fe19c4e368. 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/QZDA82451552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c493bb7bd933a4631aa0d2c3769beed2881911b7c4b550d5f920f92474ef7a4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZFZ62433572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x043736cd84ca9179eeea54a3bb3052906434a399e81302e212fad52c223fb3bd. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZFZ62441158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb981ef935cdaa40898037bf54d2de57a8380b193a49409dd9cb529907ca9766c. 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/QZFYY2419298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09aaf264dec52fbcddadd57b00f293f9350087f89fa07676206c889a986c3c84. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZFYY2418973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea1782588b8c5b8c8ef0087f063df641061a783213b0ae11b70d679ff67646e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZWFR2383925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f4af0286ebcfe85bac875d45c7d54666b9e72778f50a9e48477b0e40c8ce38. 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/QZWFP2332924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69a5a85f6d015bd83ee22c574d942f87a62f201239eee3ce333a54bf7c6d67e4. 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/QZWFL2356533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e4ff5f0b41bcb7481461c1c340b0e52afa3011a95a6d4b04622e56e05aac88. 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/QZWFG2321212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74df4c536e8a68b865c6eae5e91a07e4c69eb559a26058a3fae8aae32d48a66e. 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/QZTB72350615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x789877aa7f574fe664ba7bace0adc6f0d13cea058749764450cf618062779f6b. 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/QZTB82350668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd36f6be507fc7359c33c5d1cf399f2158d8917ae8eccb43c99ee29759e70e60. 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/QZTB22374038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x691025aa6c1c9d4e3d6f7ef0a49fb52579a1d25e3d83d01071811e99a38b1ec1. 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/QZNWV2372843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3420c0fc5326829b1794cb91d79aaf837d7f1cea4444035edecf4bedcb22c729. 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/QZMEM2397943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af58e9eaa78b2ac094b59b4c87e40e17422c2625e92db3fb21f168451ae26be. 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/QZK6J2310839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b54413d38816bc291c484eebdc7cc32a25e5dae7114d49ac54490dd759fa65. 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/TCADL1839192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca3eb5192f01045e333cc165d6ced840865f14f85281efc804e3c69a1019994. 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/QZK6Q2132063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2a673bca461be5a84235347849593aca51d824f47af5aa7932727452a74f630. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZK6P2396830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd8f22b388366bb25b3c7d3c35df950c4bad493d8f0411fa6fdef923ad59f39. 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/QZHN52108220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f9789ddb63925df48f03d27476c30ae39e1172139597833ab45147d00f0139. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZHN42283342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cfeb140d647a8a3e40d91bf1fc9e18ad6c67d0ef3aa17f7f5bef86b64c712f8. 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/QZK6Q2350609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8e7d44825463b72ee2447be41fcb312e45d95170e2eff105755c1971918b46. 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/QZDA81955932.