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 0x81ff035ae64a4d329c823e1254689b3ba6cdfa66e262ec5e4dc1eb34b5f481be. 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/a6c87d54-cfee-4936-8436-88f3d3cb793a.json and https://artists.proofprofile.net/proofs/artist/a6c87d54-cfee-4936-8436-88f3d3cb793a.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 0xf7a7ff32827b04e43c0c604155808563b7e815c4454acacc166da1fbde7ddcd9. 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/QZNWV2332637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d151587c27f6cf999151e9413f50b81ae9b387f2dba1945ecdd82fe9020a7f2. 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/QZHN32385845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f0f5a20caa5970457d881d94f1968291592eb4a6c0f39e45957cfde32fbc2d. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZK6H2442495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582c15876b613734f0c47e82fbe7db5ff352ab95d0a1055fde2533061146361a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNWW2426647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9870de09bf0788cb336e8da4e2869d884c350138d61335fc80ff8a22e45337. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZMER2450984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a7ff32827b04e43c0c604155808563b7e815c4454acacc166da1fbde7ddcd9. 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/QZNWV2332637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634b1a5081e2fb0d8178a4a6ff075228c2c6765bfd3aae81c25d83647d47d92b. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZDA72456200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9425374cf7e79e6f445aadcb03c09fabe242ca25fcd58393725f6cfea902a823. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/GBWUL1807645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce4f6df260a5d75fd0804a00ef577038b6583b33b2bd241aa461ede4aff887e. 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/QZ5FN1912101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbd377e76b11a1832dc5c97561f4f4ca8c47f9c7a334f246dea2d3ff70d88c01. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZ5FN1960387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f414311b680576df4c2b54ede5d0af1b80b07e3401cb52454a5ef7f0721c207. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZ5FN1960391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1978b321d45f3710bbd962bb0da44d67cb6ada02bc0ddeb676786593f09d65. 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/TCACN1626455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae29ba4dae3fd1669a80a12a77989faff35fc2a8245d46c4879c165f2db3e8e. 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/TCACN1626456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f9717a3fa66ef1c2ef601f734c10023c2ca8dd26f1ff6e1e16822bae8e78e2. 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/TCACN1626457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f1fc4073166831ab41321f30c94f8b6dc2b283d7577d31334cd11778d4c6b9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCACN1626459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3ab286c7e3685a97c11da76dedf252a3f75d4fc2a7cf64c0682d94c5b567f8. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCACN1626460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a98ae7e9aafd2751479b6169e9489b174c8adbeed1f1e7335ca8eb8927e653. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCABS1304110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b12411b16330dc24a22964dfdd579d9fbb27f4a8741c0109920b407851f95e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCABS1304111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971eb70cc475ac0925e71ed459c40e84782cd22f98c8c43fc17a8a55ae444e05. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCABS1304112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358240ba05031fc2671a13c6f3e0a1b110d9aa0daef7b314140f7f69d16c82d5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCABS1304113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3399349275f7356f46f3b894451cc169d104ac3d8363ede40b5ae9c685120c. 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/TCABS1304115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6d6e794b60335a51690cc1778f5f80297edadb785e8df584947c960f5d2e70. 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/TCABS1304117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c09acc5028579332cd18f8914a9720b7281da1825ba3b80002fb4599f289dfd. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCABS1304119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2017269ee17fabb1e185c215c8cc1312dbcc736fb53d226a9355cc808c24b167. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCABS1304125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e264010e2608293a9429e160344b671ac0656bea82bc34c2b4e463575e44d3. 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/TCABS1304126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb4adb3e0219879b3ba406cc36794af9a11a5f7b53ec246940c525cb95aaa03. 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/QZDA82460889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x507199e23031e7732082f8afd3a1170e127a52e37aa027ef3ea6aecb66f166d9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCAHR2388697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce4f6df260a5d75fd0804a00ef577038b6583b33b2bd241aa461ede4aff887e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZ5FN1912101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9425374cf7e79e6f445aadcb03c09fabe242ca25fcd58393725f6cfea902a823. 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/GBWUL1807645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6960ab9f687766191c6537a71f0a38653fe12f34d996582ca174f1e6b20016d7. 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/USUYG1196205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b32a3c0b92b6a9051d7d3d0588430fb7d18b273f2dcbfac1ef5b94e8dbbae3e. 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/USUYG1196206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f849caed23d71a689d080c6859f4876179ce86a35c467eb98e8bae109d80f9d. 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/TCACQ1676557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe53807560c0a74c372af123f4843fc2d74aec96481304fcdb2b63dfcaf83fe58. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCACI1521991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132201c9a75aa76174b92ffcc8f63c6c32a92cbe9d0f11f4a9634d1f88b77071. 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/TCABM1315335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea2612e0e1a1dc2dc333686b90cab24921f283195eba6067a7f1a642aa930f8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCABM1315336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449b15d8dec6c179a6056d57ed4c4b1b56428e5c82e25bfb01955ebe10c45ec1. 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/TCABM1315338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9ac185df1860e9b13efe68f2eecfd42ff9c622ab3feb491ae4966e3b4ae0a5. 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/TCABM1315340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011e306fbab5499cfe44452cea738879f81d58e93924e0415b4d751e1196ca53. 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/TCABM1315347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf785c15ba4ec1b0775ba54dd887034ac5115593ce25e015d997aea70fcf3d87b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TCABK1292907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d7076b40ec69f53c1be43ddd0678557061c89d348c7119b58cd338840972e4. 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/TCABI1292613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de3feb7cf151bbbab6b6ee78566ce319e943cf923bceb02be3c8f5be057fb34. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCABH1264843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e9f77f3826824b89f69971b1498d41583371670cf361939baf9208f9207cf0. 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/TCABE1223098.