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 0x2a196a1a92dfbd0122107ae8f934677bdc4affe94fdb8c64d46320d56fb117ec. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/00ef5c64-320d-4324-8aa6-d7aea31157bb.json and https://artists.proofprofile.net/proofs/artist/00ef5c64-320d-4324-8aa6-d7aea31157bb.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 0x699a7ff75abf16e7b4989cf1e88a918c830a152be26b7729e670455295cdfac5. 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/GBMJG1805718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3b046bf36463960704c6932156e084cd3fb0e919e8850560e1e05ef1f53368. 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/GBMJG1805719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43727a717ab3f71128d14e4c13462d2532e335989176e2e26b5f94300b1979e8. 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/GBMJG1805720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d3ced1f8c9b42f0a7ac0a91aecb3afe8f3bf40cab231aabd294264f5882b67. 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/GBMJG1805721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd53881a733cb214a5562fd03bad7fbbd9a34dd82ca8d958f5d117800e1dd4cc4. 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/GBMJG1805722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558a2957e128164236e09452a43c3e41998440f90279bdf64cc5c904ee95ef77. 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/GBMJG1805723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88894286472230930b907c0dc2592de1bb94bd3693c619d66410bdf3280fdff0. 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/GBMJG1805724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750ce81a51876fab674eae6098b06212d69a73314064d6f01208deda8c4a48f4. 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/GBMJG1805725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x508a284d04afadb420561f7a874cbed5db57f1a28f47d7bea997b9df6387fbd1. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/GBMJG1805726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d3fde3d9b1cd54b07aa0752f77530e441e11ee75a7b316cba5fb39f3e916e7c. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/GBMJG1805727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc50597c1ee3d97f08feb2ec4f0f64fac7029cd9eb9671c1ffea7f7ecc3c088c. 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/ES75E2307005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e8dbc10d6911875466adf2239e7ddc21a59e3fb7e5f3304b2d830117395f11. 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/ES75E2307004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a91ed8dea96c8b44458a17867dc883c0a74dbcd8d6ec02b92360c124078899d. 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/ES75E2307001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd488b21af684b16d796a7b0e8137809790a6cad96379dfa0b3c18e4f93509f. 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/ES64E2315294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4302718eb259086cacebfd036eb5db67513f9b54cfc16e172577992a3e9d79. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/ES64E2315280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f3c91c4c9206b1aeccb8eb0db6c5c5215fdc534f8875463869867f39f0fd31. 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/ES64E2315307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd488b21af684b16d796a7b0e8137809790a6cad96379dfa0b3c18e4f93509f. 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/ES64E2315294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf417f7c9a19c7f1387c4d3d81a8f63d3b772161234824001fe53107ff9dabf45. 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/ESA011864263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff8b946833d9ef3d1968fc2ed7bc743d5756fd1f159bb824f4fd6a994fdcb7da. 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/ESA012046587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0839256be2f9d5c791285dca06aabc99b112a41bd7513e11a0ef4f2f86e8b9. 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/GBMJG2003988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f6acdef82c27deb4f50935336d0548f5d2a59a37870fb9f5b46270e674635bb. 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/GBMJG1919616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x033e39766c608d66c5ee5658ba60fe7fb32e1103dc25076d9d6d2fd0cc8c895f. 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/GX4R52325706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef4b57d708cc52954a9bca466adfa7963fc2df9f99642093b62baaca201048b. 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/GX4R52391395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5710d6bd5ad6fcd93634b8680050d16f241c3307ae43ddb9796b88226fdd32a. 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/GBMJG1907868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c06001d3f868e5abc9522722ecd6e719be1c5111334d32e5f8d2315acf90ed. 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/GBMJG1818211.