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 0x1f506c110819de2f64f58ca17ea62981bac51884368b2992aa4289094f8837fd. 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/a3c1cbc8-7367-4820-94bb-61d115b227b3.json and https://artists.proofprofile.net/proofs/artist/a3c1cbc8-7367-4820-94bb-61d115b227b3.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 0x97b7c0ef4de3a667b44c4fbd22c8533d5c4069804e1255d7bfa3db880b347811. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:37:49Z), 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/TCAIQ2468322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x724eee5eb8905de1e1d7b0014a8423fb7cc5738a304566637b0c2ce9077a6ff4. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/TCAIQ2468338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d2953b3fce7283e216300001febed1232dfb44014cd6bea85256a07afd9878. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/TCAIQ2468340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd633b3f102382edcebc33be3c516d7255395e7c47304db01daca214da61549fc. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAIR2468342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcbdc565c5eee2530e25705437c773a4186b91bf920866447feca1121bc3d4b0. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/TCAIQ2468343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2965c6a6884912e2b8c2dc4bdb323e26d286b4a354535adbe90ed06279b71b2e. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAIQ2468344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7bbcfab169f5c475d103c8a4fe1e614218ffd81d9737cedca41e8ae09113de. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:26:45Z), 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/TCAIQ2468346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79ae25f5117b2e8519690961cf157c9b458231b4d20fcf8dad280f26e3c461a. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:42:32Z), 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/TCAIQ2468350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d95d5f165ea4d9974e8acb5a27e966adfc360224af1fd2847b593891f613d3. 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/TCAJC2489227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3dd8e7cc66646af4d300605cb1eb4d144e12d233d2a31b91d853e4b158360ad. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:36:24Z), 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/TCAJD2489234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x940d8021137ca2f2f35ef6ba17001b2b92ea8446e0014bef7da8df227bee0d95. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:27:59Z), 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/TCAJD2489236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f3fdfd34a915715f6f65cfb2e1f8570b02da160a181acce38b62e370f34d61e. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/TCAJC2489239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d43ecb582d9dc60ef1b6272cc22e86f3c7eb6a01e6ab124638ed8cb4ae6f0b. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAJC2489244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08fc2f8c044f638158131c81dbe23a0a14241e176adb4c27c863ff2fc5f7e45b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAJC2489246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac080792511f2d652133c89905aec4844c605a659378c0f05b11f7dda8a4829. 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/TCAJC2489250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b750c85f1c326e77421621ebe1006cdfd71b9e68039c7d88b8c3ee76badbffe. 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/TCAJC2489252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f3fd4a42768bf6a20497f0614434615ecb4b5eefd5bb08b55fa4c248f09ad9. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/TCAJD2415164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f57ba204d419f26bac415079289004da30dc963fc75357451b4547108a171f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAJD2415170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda23193e9c05b3a791420d72af5ad43ccd0303bbdf0cbe671c2d5cc25c75048b. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/TCAJD2415174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe013615a300b7d277447088068786c0eba05c1ae17c3221c5b0289b62a250592. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/TCAJD2415179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa406765c9a71d2e9386ae970218bd8c068e3d854cdea2ff7938ba3101161e564. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAJD2415180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d943d2718dfda6d28a4f3e21f02e72b5f57904e1597afe8a2e015e72410cd8. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/TCAJD2415186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71159ee252fd466b6cbb87d85d80c5c53b97c23ecedb7a9b430f1b0afdfb5ec. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/TCAJE2415187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb852e7a668fb8957dc3ca0e0fd8a46031b0a6cc9721ae4d14b0705f16636b53. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/TCAJD2415197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28244aaeb9966e0ed85ca9de2d20720856b00127b3052a1de44a7c0997adeb2. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T04:43:39Z), 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/TCAJG2505971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5500878d752df2e4e4a4cfff2d17f9b20d76ce85587a8b8b2643dd3c8b56718. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAJG2505974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78a72d8bf72e51574808c1237f4857f14179d7ba1eb4ce811d189dd3ec2f5e0. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCAJG2505977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x017300982ab55b9266a791a4a36b76d73458950cdf19aa6a83a7ed5e0217a45d. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAJG2505980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa399be4c6f38eb177702f623084a5bb0615d6ce8a993a45b8a644bd63fa2dfb4. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/TCAJG2505983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa46d207c0b1117342aad49c7b03d99c558cb3746aa2d12c9f2b032d54f7c0009. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/TCAJG2505992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4955136cdfba7bcf5679bcecb18a5be75dc6f5fd2bbf8e954bd716ed8644dbc. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCAJG2505993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4576e3c439d5461b5a9f6df81b131f96c45c765ba5217c139d9e59d536ae5f37. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/TCAJG2505995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94519a1c7337bc749765770cd278a07694a6136196175b8b8c3ae47a88656e52. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/TCAJH2505844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f756de7df5f16fea8da2587d4b64041bf0fa2d8ee8895ea6ff818b2783f01d3. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/TCAJG2505847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b96d933d5ceeb7f7e51d6f2de08ce34858355c705bb2bdbc892a6aa95dc350. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/TCAJG2505848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca69a4003f61c9167b55c36fa0ceec7629403c2d4acfe30d80d3d4d537093b01. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/TCAJG2505851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe355907145bba9fce383b1525b404e36e22882e16b75ecb791d3ec698d8b9c2. 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/TCAJG2505853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c19c7f6b628d51050a5ae6ea248394f5968f3e5fc9d161bbd82db770fab36b0. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/TCAJG2505856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb914aa350fe1f39068fed75637cda0afa7270d31e2aa56e11c3908884764bf2d. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAJG2505858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295724cf3ebd487111728e96097c27999829fde24388546e2e6e845aa3f86a3d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAJG2505861.