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 0x409f62aa2a9676db427e7f370fc82a660f7d927da7bf4d07bc7bd306d90a20ae. 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/502b02fe-5ce8-4b3d-81d5-0e602dcb0b96.json and https://artists.proofprofile.net/proofs/artist/502b02fe-5ce8-4b3d-81d5-0e602dcb0b96.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 0x2481d549d10810845484bb111809b1939566de09d23ec5a3daa57a93e108e6e0. Chain 2 (Bitcoin): anchored in block 957539 (2026-07-11T08:09:42Z), 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/USHM90697053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59932ae78fad8b3beffd001972a8c3b6dcac8315d59ec16e89fb6b5efe45ccf0. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/USHM90697057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d87d135c491ae1f38976f681e52753386cbbac98df5309f6af187aacf4ba765. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:51:27Z), 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/USHM90697058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f216d497582ed286bc2b0c9515c4e9f961c9cd4df15213576ab00ca12b7966d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USHM90697060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226523648e82c5a6d5908bad3d870dadfebe136e39667d1e6b9197832e721ad5. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/USHM90697062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6def5ffba62e25cb5f854625cad8a0eae8e9856186b063e00aa2897e7549952. 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/CAA6V0900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x421f0f3bef09922d9d3bd066d18b18ffc32f1d42c617a42a672178701fc9c58f. 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/CAA6V0900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb105c3614359fc043eb860a77d6f51652a257e7fef19bd723727f8767449f8f. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/CAA6V0900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb690d6b9999510190d9b1aeff029b274e153a96d6d18e068e8c0c1df5e4a098d. 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/CAA6V0900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d1e3b991e6bf79ac8a7435789e2b2725a756714c3e37ecd5bedfb6324a52f0. 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/CAA6V0900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6690945036ac50476c04c64ace0d8100cd861729af50153732685f229b18c8d. 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/USHM91713088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8019783290d46324fae87c622581088351e09cbd6b47e15ec09b498a625e6c5. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/USCGJ2585248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734adde9b484d4dd18cf6e74da12aa4eeff83b5a63719e469c21fc48a32ff750. 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/USCGJ2585252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4acb5a7804a86aa0f38f7c021c403a5664ff0c686ea38b0cb0d06dc151a864f. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USCGJ2585253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac2754f334c491c604b5870762990a41eaa6e32f2f84ae39c7b08946305b33c. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:48:36Z), 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/QZHNA2578578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7081798791443c18a8a8991527653fc7e1d8184815395879e91bd040c1e9efcd. 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/QZHNB2572879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7081798791443c18a8a8991527653fc7e1d8184815395879e91bd040c1e9efcd. 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/QZHNB2572879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b1e5d40d84fc413992bc13034936dd6db96e908f0249b8bdbe51dc09ce0ce5. 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/QZMEN2585106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7110ef9895363fde1478ddebeeba50cbce36e578a0bb60a7878ddcedadcace. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZMEN2585108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6356cf93bbb72920587791b83aa4453a3341dd1ebd8c0d957f7190b9e9cd715. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:43:50Z), 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/QZMEN2586559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b4540b845051bbfb47b97cffe40fd69bc1d1c33f4b3b10eaee00aa9a010f41d. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:48:11Z), 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/QZMEQ2588830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dee67f89a06c660771fc079bef8a90f0e285b8e628c5a6b176286c5190796ac. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZNWX2558071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x454a93e411be734fad1a70552c43cc05f88b425bfea5b257937e59a687c26f94. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/QZNWX2559349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2878c7675fe2aee7671a4ca37d44edf05917eed45782fde03620dbfb5b76800c. 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/QZNWS2523041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5ab2cef271a3339f50a2de9d3c68b9223f8219520e4f749174675cb7753593. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T13:19:57Z), 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/QZNWS2523042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637f9b651c2234963348003f6b73f02ad4a05945b7384c63e1f28faa1797e9cf. 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/QZNWS2523043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef5eb1755f78a09b6abe195d8850e39d0e1947a99b557c760ea4369922eec1a. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:51:38Z), 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/QZNWS2523044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c22db1574271d34094f6d568a19ee3dcd2c812e4e9eb728d81e42365bdc162. 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/QZNWS2523045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a91f403daa19426480d261e5c15d95de5953828023a15b34605a2a67a0bfbe. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZNWS2523047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e4e0b0fd0509c9fb3c98cbe5a057b516e38686a9cc3a79da385191da3e746f. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZNWS2523049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x651de366187bf5dcf4782d3b42d5b08b4fb254cd9a733ff1acc07e15990c974e. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:11:53Z), 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/QZNWS2523051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ab31a191fa300a3ff72f44f60774127e6b8937718b9c684c0d002af1b09d10. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:44:06Z), 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/QZPLS2522423.
Two Hearts (One For Loving Her, One For Loving You)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233edb262fa9b8809d49eb647d82152bfd064531b57c058934faf826b1e8445d. 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/QZPLS2522425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ba5a186ac580a15c1bf582fcead1fb9a671c7a1893c8c86b59debc47fc43f2. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/QZPLS2522429.