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 0xea4b917af70b7702bf7f8b1786363a5c133562080f211b5f6fcb4640ab3f6c8c. 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/3fc44e73-e33e-4c74-8c3e-7f721a6b17cb.json and https://artists.proofprofile.net/proofs/artist/3fc44e73-e33e-4c74-8c3e-7f721a6b17cb.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 0x1125addb251e6d60c9e5ae6116a444e55b1671db0ef5ea9958a48307de329b4d. 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/BXB6B2300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b76da5f67d857c4283948dcafbbaf401f7b7fd4189e13e6e20a386057e0dc8f. 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/BRWMB2300056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d32809728c77a4735579471a4914377bd13f6a506138400e15de6d17cc81033. 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/BRWMB2200682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d4fa6dfae582326d92f4f8511a21ba170a585e8d3aaaa84eee8160e9d03da0. 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/BCD592100086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d26f8d0796b639ee0c729b4dd62e8ff0f53e7deacfa5dd7c90a87dcd5d0e7c8. 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/BCM9A2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24233afada0793e061801ae32bac2284eefb89440da99bcf0132df794427ef13. 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/BR5TG2300058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe64de3bf9f29e1c8eb698c289f0dcd291e098edc642170bc30a73a3d87da94. 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/BR5TG2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5003d42ee1113986b9d788f0f3860f76cdef386001d309c4f24bfdca450165. 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/BCM9A2400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4c13718ef3810377676aa45699e57494b20f1516f90612b0a953cb9dc1b51a. 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/BX6Y62400079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43c70cedbfe6e9e6d5ba9f4cf459716dd9ade635352f64749d72cf3a47311a2. 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/BX6Y62400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f7a446c9e0c176a0f599cf9d4923c00516a6a4c7f66b77ccba69b46561d86d. 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/BC8182300219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7cd1e1f80f8b3c1c83b8a92395431f0ba7b96552f4618a3ae7191e30f2ce803. 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/BKM2L2300080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578920c3d49c22939527fd1503041b28cc010166b58b3af426053d9c6c91ec94. 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/BKM2L2300086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf1d06d505c95e6c092d8c00cd1212493bc59093edf7bba86238c87a0e85e051. 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/BCM9A2300035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61daf6744821dbb33f8fc670598ecce7b765fd8d70572a47e28023def144b407. 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/BCM9A2300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea82657e27d8bff5c907ffcb6dcdb42f5362b3ce5ed7bf2c713467509568f54. 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/BRWMB2201019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec27e6e5e51f3f8359f1276c019215cafe81fd1b3c03ce88a32275991191e6eb. 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/BCM9A2200038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc91e63a64520ad8f2098fad827dde7ae8ae30790996f0bc1417bce8a4295d4c9. 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/BCM9A2200032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a1c2f86b736288200316ed6b30972b7b39a547a8915b366a4a028b6be4aa4c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BRSME2200766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc7b1a32e8e2a157401477d30f76dcb6771fb00d4fcc084931db601b56e4ac86. 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/BR5TG2200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368beee3085ea6ffd395316f3d4a38841a678b1eca944f8340df646d95f685ad. 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/BCM9A2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7bc0de470b5f5f35439d1d7664c28099e03c7a5549f8ce5cd19ccbe259bff13. 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/BR5TG2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa1f3cc0f79fa3420f1eadbed282af1b7d2c2e0d6cf6e0f894ad10a40314469. 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/BCM9A2000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf503c2aea4381eca49278745186b88cc9e88a003f466a48ac5cd5918c63741aa. 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/QZNJX2004038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2119e18824688d90bebbb709a4d93681c48fe99a6948b3da0ef21af6b95b02d. 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/QZNJV2011379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d7d29a2716a0ae85834f5e2edfc5ebfee3b4cc9dc9ce14329b5d772ff2a544. 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/QZHZ62067121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8bc180594aa5244e65b80bb5309486f70f510086fc094dbe0f8fdf4bb845819. 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/BKTKP2500051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a0c75c043672ca017943ed2e6d20373705442e5f15b6f960967d6fa76a17b9. 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/BC60P2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe393a8e19a92f23a7e8e884d6916e240da324e38282cfb43a9e86f068e1b4eac. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BXDQP2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194027ab5cc4690e5461f6acd384f018ec30a1f2c45e675e4d24437592a910d8. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/QZW9K2428910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37be0c7b6c46da1bc90594c09493c044983b3e2887e71b89e5a54fdf14595062. 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/QZNMW2427232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a4f138bebd5a244e6d71b6725d8b2087ee6bb6f49edff28d90e65d7b8ebb6d. 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/BKBSS2400414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25dbcca69deacf3a14510cf444d2ca3f20d6b326c180a9add1345ee4bd7abbb5. 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/PT9EV2300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e3de9818032ea0c6c50166fb02f7cafb8d6042f93c6c008714a45c6d117cc4f. 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/BCM9A2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be29ca22fcb45730e73b14130fde1dee6a7bb152976ab9e247911272358f157. 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/BCM9A2300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41dabfdd2a9104474f961c55019c03d905520556a1b486526cd773b8000474d. 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/BCM9A2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7cd1e1f80f8b3c1c83b8a92395431f0ba7b96552f4618a3ae7191e30f2ce803. 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/BKM2L2300080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578920c3d49c22939527fd1503041b28cc010166b58b3af426053d9c6c91ec94. 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/BKM2L2300086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1125addb251e6d60c9e5ae6116a444e55b1671db0ef5ea9958a48307de329b4d. 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/BXB6B2300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b458002b2c3a554cc536f67f6f879b0c7567836c5f28de5dac00d567ff64fee. 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/BC32K2300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70f2ea434106b5c645d91cbf435baee306c05f486aef50e7f547b162c61a69c. 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/BCM9A2100029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8b6e90e3bf043e20f4ff64911a4073d4b81340c0edc3879067623a0dd5fe5e. 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/BR5TG2400039.