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 0x8c103e32e921e00c6f95ec56c6f3d864a41efe892df4cf127b9de89dc87c6847. 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/a54e4f41-c92a-4df7-bc94-565f0f25fcc6.json and https://artists.proofprofile.net/proofs/artist/a54e4f41-c92a-4df7-bc94-565f0f25fcc6.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 0x70a718c9c738b17cb01b4f0c36c1ed250afdc8cade4ce5dc0f145055ace50b80. 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/QZNJX2415857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226fd6c29c409348d0c208409378ee57f50db40baf55479aacb6e5dd74140b14. 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/QZNJX2415859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fbcdd6d863d5b36bda9e1ca02ad4c391ea7e98733c749114b40331dc4ea723f. 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/QZNJX2415861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97629b30e62437d197e37a8aee05782bd767234eb576d7fbefc1a6ce1157b300. 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/QZNJX2415862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc8c51cd73a9380664d68ccea536cf8b24f78dd9d635ff8622e0efc476e7ad3. 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/QZNJX2415863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb764f7aa77227938dc9a4d8e6f73e4c99f03ed0d94fc07cd832a57efefeead41. 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/QZNJX2415864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d5920d9ad0079d0e8e0315c0c7abeddb1d2ccb9a72b0f7dcbbec7618ca973dc. 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/QZNJX2415865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb6a9fdeaf6a7a458cb60bcef2d51775ee3e857f120650d26d29a241396810a. 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/QZNJX2415866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c528c5329abc8b7bf10bd9b8e6c1e2b00ac56f317b619ac80d8facdef56e6c5. 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/QZNJX2415867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85608e063617be4246c2d1a5f17aea6ee24b7b27707303f963627c1fb87763eb. 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/QZNJX2415869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bee0d069b4e8766986e4567baa6d5e71ba2ee9c456280122667528e578c8950. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QZNJX2415870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d449f97850db0914a70d168e3905f4e0831c5203dc0543eb0d75363cf47b16. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/QZNJX2415873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c6b1984de455d5421dd48707814c9c1a8a3e6cec7ebf49bc43ddc1650a539c. 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/QZNJX2415874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38803de7defbdb60fb554cc38405c84d3079876485aa681bf7a1c3f44b6ffd86. Chain 2 (Bitcoin): anchored in block 957057 (2026-07-07T15:21:38Z), 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/QZTVM2460074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511e3cfffe81fdf01cfa1fffc49d0a70bf76743cccd19498f67adf87883bf0cc. 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/QZTVM2460075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88571c29b07032c796f9c63a6b405e42f2e680cbf9b5d50b6b76a8d0b6bcd7d1. 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/GX5MY2416408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7515d4b2a1dfb9bb560149950f1fb8ec4867d618aed8db1cfa8dfe095fef0704. 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/QZNJV2419670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd9af175f9d951004c487685543ccd07328734a43d66a5db6f9aac25a84ae68. 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/QZMZ92466941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2386dfd1d2072ee78cfeb5c127ff615f9534f390368f5a0f3978cfeb1ed5cdc. 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/QZGLS2393681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe34d66db3369a59ef0fdec7a9a0b7822a370ddbeb6ad4d42604fe9cc3eca53eb. 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/QZGLS2393682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9513d656011fe45a81f11a3213300e3005b5080966cfb3e171e4195f71ef3cee. 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/QZGLS2393683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30fa4432a2d2adb2fd04a1766e5265aecf5fefb53775de8f766df1bd9ae90b2. 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/QZGLS2393684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa23016f7a941e54db505c9d6294b21526a85f181b1edf6173c9d531e4df14931. 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/QZGLS2393685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b87000ebe3582f76b7306146ddf6c82898d69f3774eb8b1933bdcb75f37fe53. 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/QZGLS2393686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30570355a24928061809b61773bf498a3346f405031b673ab3bf2cef2283bea2. 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/QZGLS2393687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4268409afd5d7642d1b06857fa05e31e9b312d4a3851487a8c7e9ed679edb61. 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/QZGLS2393688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68db783917f7ef26524de77145dadf1b42a70f66081e9b43774a23905b117b45. 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/QZGLS2393689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5925363de54c608c71a07919036f7760caff5afe12a3fc8306736157f7e3a9d. 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/QZGLS2393690.