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 0xaaa9404240b67198f89a34809aa90891cf93c148ebaf2b17763a9b0578ce0e98. 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/f2cf944c-e042-4ba4-b257-8372265c5710.json and https://artists.proofprofile.net/proofs/artist/f2cf944c-e042-4ba4-b257-8372265c5710.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 0xee735337d3be6b50cfa3b5a7fca7e0e62a0f1c12e7a01ef3f73399b7d47d4f8e. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/DETO41763203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461834cbece8c6839190a7f24d273cf6e05a07f900caf5b33124f461c9b371bf. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:32:09Z), 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/GX4R52124026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3694c96ed9abd282b620c567a635d1b4f28f4f1513e73cc85ad8b6b292561baf. 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/GX5MY2186334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4714229c08793f63cc4df13cc5b023a6dc08cc0c43d7a4166350d34ededfe38a. 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/GX5MX2278396.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fabd20e8bbb911eb9bf0e4cd209a620778138a9338da59dbe99d1b7328eb056. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZAKB2314779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d749ad2ad40688b605669ab996030bed395452d5d7715ccd66b1a92ebef9bb. 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/QZAKB2316459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7138074fca096b741ad2c3c5f28d52fffc78a9544073a09beed8b46ac70717ad. 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/QZAKB2316463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf727ea066f4540b6c6a90715112a210a3b1eda230c31a7f1f0d2a3a7ea5d41f3. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZAKB2334498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff97631adb1dc066170fb1c18ad34a2cbd73c2cb05dcc5f475d2cf87410bbd0f. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZAKB2334492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e88e950cd73fb18d28ce01f62dbc842614ec53922d488a2ccab3e956e9c6aa5. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:14:23Z), 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/QZAKB2334525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7568cbf68f0d9c911c6d0d9bd8b145e3ba1d65cabc2fc4190665e6eaad230730. 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/QZAKB2334508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8677de46614001ea78f9f72bdbd05517d4a1110891919aa1e495fa449519e76. 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/QZAKB2334488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0475109d48a712bb7637382483cd0508eb42a2645b569ebea4a456daf6cd00c0. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZAKB2346474.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a85e593d7e841edf0cbe1961f133b3fd73c64d5778254dd7a95e01542b9228a. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZAKB2461698.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e96c94ed2a8f55b9677e36d702efcc1898adc205e590e287523aafe103c8dc6. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZAKB2461848.
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