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 0xaabfe0812157d90e918872d5a759849674a2ea4559e8813b2852954d8fa1a0f2. 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/5b94b146-ea70-41ad-bb1a-772502da5891.json and https://artists.proofprofile.net/proofs/artist/5b94b146-ea70-41ad-bb1a-772502da5891.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 0xc940d01c1c71bcd74fd3ff5b52b6b74becf8b85801a50b50f1a4a6dd14cee982. 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/NL2QC2100407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96bd58fd35de710ae8b8b206033cee5348877f6e28159d6d2bcef639eb037c2. 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/NLQ8D2400200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f357a2670f827093c1ac361a08675d92a6d94fcc7c80a5ebf8b14a2bfb427ff. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLQ8D2300369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6cfad9618023f24f8f4ca6a9d23b62fd20a5deb914fd2b3da2b2fbdb90d9c9d. 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/BE5KW2400516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddfa630681d9f0d6808fb4d00927acac05ff0232cedee576791b3cd72d3822d4. 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/DEUM72402413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc14d7854ccc2b01a9c508bb47a4c340a5e3e19cb6b554a653bc6e6f72378db. 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/NLQ8D2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb24cb7945308fdd47171682e25ccc509dab5373bab567fb7992e26699fd43a6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEUM72312005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c2f5eaa8ab20b9e923d635010a006c61ce3e4e0874bdd4e31551ee35fefaeff. 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/CA5KR2378446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba707ca076138f83ebd3fcb3c902c972980c887baa60308e9b72785a2ad2a65. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/NLUW22302102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9cdd2b0737490751d9b33a5c444168b91f75f15657241ac4eb05923bbc1bf72. 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/NLUW22302110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f6778aaed4eed8e8bf16e245c29de9b9ffbf2047af2b71895b9311e244f47b1. 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/NLUW22302040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b8659ceadb425b506e9fefca682b1648a181d18630d1137ff24e4026393407. 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/NLUW22302041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800186057defe024bab6369edf8bb57b47ee8284b7d54edf76d38cf045b35b03. 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/NLUW22301978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef63c918d663b6e624eb648af6915e3a829a1a6df1dc15e4c3dbb59d060403e7. 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/NLUW22301979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab5f2306ff6953af381a11d0358e2d1acab75bee5ec624bfecbdcc2d74ab581e. 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/QZTAY2200994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a0c3bdd769be831161e5914f2484b18516fff2bc8dedfb649a9ee1f0c1ab2ea. 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/NLUW22201754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce5f97d6bd322e026a22a570fd2b304111a4fa21a1a66d1075d22645182a6c8. 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/GBKQU2272381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x927907fc78654dc75d28d7435e7bde3039a89a620d61ca1bc3470085b04e338f. 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/QM6N22232934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0663d1d39533ade88bcb196d045b4a7b9d083cc67e1746b093e9f282ff49f8. 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/GBKQU2230375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449a4e68d6c5e8560e4d4516d480ede95b94f39ea901d81e50d4c8c75b5b0b1a. 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/NLQ8D2200358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c5cfa78e0c01aa9a669ee7a8fce56e17151a0447e9a4030769f23a3404e45e8. 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/QMDA72138054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ed5dc8db39b93ce3af820760e0cf2e5958ca38ec67631d1959d69175f502301. 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/QMDA72138079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627c1a511d6a6ae23cba66dd888d1f9ba082fd002466e06efc888465e4cad032. 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/QMFME2169563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27c67cdc0cad07cf6dd3a9accbcaa3425e9958b56ad465a6934adb03ddb5fe6b. 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/DEXO62062338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa66c5aa235d4028c748e36d5e6873cd6b2b4a4f985c43f084129fc996af5329c. 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/NLQ8D2100600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafed5edec8e4aa8430a9bd0d6e48677259c9040d026c1190d7a65a4fe5f64986. 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/QMFME2072984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcfe3d13e0710a9c7bedb509995731bbbd1c7520a755bba2dfdb40d59a7ec31f. 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/QM7282073268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb0fd782a4d3074fad00478e7ff8b8bfafc6ee0330242bff3c35e0550fefdcb. 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/NLZ8V1800320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8300771c5530d789b42121c41d298df08e2799568b6551b65aa5cecbcc3056d0. 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/NLZ8V1800321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de6a1b13c8ffcfce40b030f88a043372716b9a0827389746ad7888b9a83ea23. 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/GBKQU2467481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef843c22881bbe7d869160102b70ad66ea7ad985e8a93d0a277585bb7100833. 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/DEUM72406883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c2f5eaa8ab20b9e923d635010a006c61ce3e4e0874bdd4e31551ee35fefaeff. 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/CA5KR2378446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb24cb7945308fdd47171682e25ccc509dab5373bab567fb7992e26699fd43a6. 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/DEUM72312005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c8f438083a0c0dce8769d53ed5693e83a0926bb4fc0a2c3b380e971ed1a598. 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/NLQ8D2101176.