1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xf46fcb37f457901e69b152f26b2d1a463edf94154693c51d8af7e315a3fa21c5. 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/f0cac676-8d75-46cb-b909-fdda8083a508.json and https://artists.proofprofile.net/proofs/artist/f0cac676-8d75-46cb-b909-fdda8083a508.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 → block OTSBitcoinBlock must exist at that height 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 0x9bf183a0c7164d326b5e51792a901fd6b2b573a40bdfe9f20b00936f2b84f526. 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/USCGJ1897854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x433e8002e9ea7c89b313964570a247db6ec8e252161be58515ee10afec6c2571. 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/USHM81841404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f21cb433490baa841584a1caeefafa9234899f454acd03845ece893107adeb. 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/USHM91803864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07ec56fae0fbda719a0279f4111d9ee2f0f21a803aa66264eafe0b2b57f86a75. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:42:45Z), 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/USHM91860179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1213aea5cdfe397ad5d95f57c13065842d2eaa5a665d67460d9fd30389bcfa68. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:25:25Z), 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/USCGH1956464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32346ea8b58ae32a4485fa25760cb94ca4524d9768dfd951b89716b194c412a8. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/USCGJ1918705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8619bc0acf73d39c99268c8978c50325fd950ee251c056c4d1378087538be3a2. 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/USDY41941162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc29e4c14130e94d45fb62df393d4e507818dd93b610f3aabc7d1e1c2eeffdf49. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USHM91906353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0830739a4dfa8e603dd27098ef024e0bcd831f95c38d3eea9984e7fa47f5c34. 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/USCGH2054103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fdf16fc87269cd279094452637dce6ea3a530d191f63243757894a8bd27ca02. 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/USCGJ2053933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d479656c6f4872b4870aa0677858988dfb93a5e2990a6fd6eaa1327ac3c883e. 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/USHM82004833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf71f99e0f7c39933b99c2c91c455607c662fc01044ce91b92f0bf6a3ef24fbdd. 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/USL4Q2025577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb46a9136f0cbcae4b9987536f839f496f8e059322571fb4ec1084c62a677fd05. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/USL4R2016395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058022f93e34ede6fae62c665c0959ee730f2041e77a169e120893835de8f7d8. 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/USL4R2016396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf695e3c27e93ba0dfed75042f8af3ff445629717f7cafe584af97431c308213. 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/USL4R2016400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba57788fee671c6d1d66e8ba110842368ccc9050827a707d403893e9641a938. 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/USCGJ2112302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a696095f91d6929aa9cee984ad0f6e1b1ece3c1148e2c715d7db944d9ba481. 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/USHM22127711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5130e8f07e325780649a5a52d6b453e2e6957c3b5d1815d81852a0f7c0827525. 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/QZHNA2162558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b927857ceadc91ef09e73419b607dedbdb6e9f5f527b1751e419e01b6ab89d0. 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/USHM82179061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5777b304fbce4616a07a47ba9a63b41ee40dcdf0a14dcf3a0fc0051f6988c0a1. 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/USHM92132535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a53e318d33bc8066c6a0137e98892885eceae72ae7f328f8742b4ea4d4f731a. 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/USL4R2103747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1377c3b5e18d839c05d6a57c48ddad0af40e8dbb8ed107ca9b5e008ffc070d75. 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/USL4R2171917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aac0059a5bb88b3a3c80adf0349a21adc70d6f586309a596a01e7e669f1f6ff. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZFZ22247528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf06cc315b3cb6e0d861fbd1c1b9936a0b5b2a116348cb5f762913e96f6947af. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USHM22263729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3fba7f8c6c984605e8bb90aa34635a8e254d9255a239bb58c4300f8cc66e18. 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/USHM22293767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9119cba01b2436ed5c87333ea407a68558789e39654ecdc485f90acd8f1b7a2. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:31:29Z), 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/USHM82231336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4167ab4e495719f6e8e55e932180d76588bac2f7058e3c0e5d7083e8c5b352de. 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/USL4Q2240962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dff7794bbd392115d3112ad99a7dacba2f3f1426b6e98f110de09ae3e72399c. 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/USCGH2352484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbce99edcc8fcf9753201a27797ce0fde08a2bad9ed4dea535d64aff9b1ff1f0. 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/USDY42302828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf109b0880999c8f7e7631efd141b5d4a399ac40b502cf8457050d42027f32879. 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/QZHN72344666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c851e519125c478fffd799005d2ca95363de552697185ea4f4c2b62d9425468. 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/USHM22312819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad369231dcada5a0996d9cec749a56ec3fcda1def017c7bee5eff1110e24cff. 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/USHM22397110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407b5bdcbf69bc6fa7ef00179afa81bc870af8faaf839f85afac70a0e0a042e7. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/USL4Q2381083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4408bddac1ce30958aff985a12b4da7ad27d7718df39e730bfad4372d1926c0. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USL4Q2381086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81246f98c0a5a0eaaa947e9c5a796aaec7003de9935dbb5e1daf29c0399cb63. 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/USL4Q2381091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c19034af826ea9c53b32978af6af2eccb91b00fd6e3a132bfc43d24fa9fba0f. 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/USCGH2444821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec80ada2a4d90140245d3b0d6fac205becedeb4e0712ff060d2a66c5cb32284. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/USDY42487033.