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 0x07cb0230f02b5976b741af9efc5f180a269cc0793908ed9bb37f4c57b4b73e7b. 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/e8179839-9cd7-4452-800c-2787613b2f48.json and https://artists.proofprofile.net/proofs/artist/e8179839-9cd7-4452-800c-2787613b2f48.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 0xfc6d2fed4a9abc1feb8db9ad7c24b6ae76c7368a22912d47875633cb4095ff33. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:18:12Z), 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/USBMF9421421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d72431f071383446cd222772d492a71af7eee9e3a7135cc58d8310a88ae952d. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USBMF9824021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94d0c6b6377258b1ea90e9ba0ac4724dcd06e9a2caca6611e4c8f04f2834148. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/USBMF9824024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb958aa21642f658546d4a670d85cb8f79a38fb4f8ef8655c0a1b6148ee39003a. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USBMF9824025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2a6c294092ef212ac4d409dc74068c9632f342b3634379c970d0dd234e038d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USBMF9824026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7144c277214a62db4bd6d8ec324f5e98827e8ce58e84df9b4d6f6b2a5a1d8d4f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USBMF0024406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23bc94cd98071db7eb20a653a1bf0e1872b4925c6ef34973a1904eb6a1d27e3f. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/USPUP0810455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eaae946bf4a4859b3fbbd60b2940192bfe5eb07853fbc71143217398b2c2e6c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USPUP0810457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc518391b22a80b6592b50598c11967c20e38aaa288d5d17769016d20e1cde6b2. Chain 2 (Bitcoin): anchored in block 957531 (2026-07-11T06:55:18Z), 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/USPUP0810433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bfbda72b903264b0e0d94736cac9d9bcf5638c1061d3e631b49623e96c5e110. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/USPUP0810435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc346a6a892b9fdeaf6abdd97ae347ae80c989966747982a6c76dbdeb61d55039. 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/USPUP0810436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d752d39a0211c8e98865580b359ceee472edf3c1e65f69f901167ac0e809bda. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USPUP0810459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb75af5563e475cf81e2c5be35567195ca5ad04d0e96a3f8113617d61d2702967. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USPUP0810460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4673d79d19521c0dcb7c37e199ab56d3c80be78a78eddf8ec8828f1a0b8f2f57. 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/USPUP0810462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a189f1ff760ca4e356b347e58ac72c95be52466d473d754d07dcc205b69963. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/USPUP0810464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5403421f0cad31d77ccc3a592cbaab59f08bcd402e527e9c3f911473ece98f4. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USPUP0810448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c22b65cced895c60bd892bdf7ed06daad933e3abe823ff7c4da09a9e7b7d81. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:46:52Z), 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/USPUP0810449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c82b9bda87d0ad7afec1bda2d8de2b18efc86cac4f5bd02b46738e9098cdb54. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/USPUP0810681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e8e6df5b1ec14c5d22460a8826ab3fb3e2726fae650430cc5aec0167aa2a5f. 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/QZN882369677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81bce556d7f01a3428214d6396420c920dac22ea6e04e778a7117375de42584. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T19:04:27Z), 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/QZN882369691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fcebb5a71a3da9d491f419d90f5e40a0b3eb6192d289ef0cebac8b21dec5fa3. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/QZN882369631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41b59c65ffa0a8c40ae2062ffa1c4535a95e695515c1caad904b347aac8101e. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:57:58Z), 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/US2NW0900078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4156425817cdb11c49af1e9a916dbf89fefc229a69adb1016f5cd2c3ac78d490. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZN882359489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c0ed5982e821b979cdf4004a739e1568b089233b37b16c5a54719c059b9c1b. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:10:14Z), 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/QZN882358594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52012cd85ef1fd638e8d663a41f2b4690656895cfbe42fec849319672d14904. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:49:03Z), 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/QZYFZ2329658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a05dac7a893d795df50b56ca6bb6ad14caedfefd1abf7899f8287dd59cfe0a. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:34:05Z), 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/QZZ662329997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x345917a78e7990f1e3a5d5c54dc76137f4821f0d1c5af75ed18c7297f2954149. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:38:51Z), 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/QZZ662329998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e0bd6b66b009c763922086ce2c2619720208fba2471c27aa8ddbed637160c5. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/QZZ662329999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f08134852ae900d34484ed9ad61d492dde562c274664e38be96e3dfcaddeec. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/QZZ662330001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ee16b5e6abec6dd5790e7fc8d8131854dc54d5a272ff3b4280eccaf632fe08. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:23:24Z), 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/QZZ662458823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe77b452fe96642e4c9f6b24509cc0a30026774f54eb3788849e81397cd3c9226. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:12:19Z), 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/QZN882418800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9aafc8b5eaba95dc2f42d7ac81407056a75eade8ac9b5f46264ca78b4190b34. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:25:13Z), 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/QZN882418801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94a284e14b7b1e8ede968744b3d66e0ab76133bf4625033b91433f84f5d1671. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZWDW2567588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2caa52e75e4ba67117f6f67b18ade426f1a5e951baf59ab912ab1d3d7a3d26fc. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:52:51Z), 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/QZWDW2567589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408c83975524a68503703a9d49d0e6e8f7df1d9ba1b6de085b4232f6e96ad731. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZWDW2567590.