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 0x7a1f898a373894ecf4f334e5645dd17cc9246a36c54baa3384e68c925f066c0f. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/359a016d-2bff-44cd-9cbf-ebeffbde66c1.json and https://artists.proofprofile.net/proofs/artist/359a016d-2bff-44cd-9cbf-ebeffbde66c1.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 0xda9aeb32a5dd5d8ba877f511a25a4532e4cbd30c047a87908c4722b06d737e6f. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:28:42Z), 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/QZWBE2247590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa989b40f6af82399b9e675ed9971517556cac49a92b64d0e8cf89d34756b87. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/HKK972302606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1221186c8ba8c1fd0d45a3bf65977dc2d52c8aaa2e890c3ca3c0187c8e289b1. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZWBE2312552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be209055955c72c365e3cd80ab047db8750b2daf20f2a2a96dd5d69a1e3470e. 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/QZWBE2344729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888483e48f7ea6483b1328b50faf38b65fa50805ed4425d084367c9cbb262746. 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/QZWBE2353139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac86959bcd04647c6472c9ccf4ec8e5db40e094a129ca15e45919d713ad07e7. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZWBE2386918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20d4674f6fd48d421d6f9d1e5f7969ad423ba24f86489cd683e0a3e69f22bab. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZWBE2410566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd122e7da28093ac009cdbdbde76fe215fece725034e481a71255796eb22cc01f. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZYHM2352972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x913ff89a6a46edc6f877767290f3e11e746240dd6ca622c6eff91f15cb69debd. 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/QZTBD2361948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfacb2c74d8923cbcbdbe182f9d2739e5e0e98dd052b22efc8350fff28f35403. 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/QZTBD2379576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a6e342937432990bc4b41e89b114e9062178bbca32e4bfef17eafc978c1f2c. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/QZTBE2388367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59cd7a32ceec997d38aff47626d0345d3b495af698b66ef8acad05713855eee0. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZES62436680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5329cc4da95ac2fc99f1f96a6b14b0ebf1f045c9a6920111d9164b9114c6cfcd. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZHN92423099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf891c1ab3a4fc74cd68e18cf59ecd2dce1e18494b40b246fbfe0689742e9067. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:25:24Z), 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/QZMEM2473938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d875a89a540cfdceb5b05c774328dd4d09627025098adb99070babcec6ab35b. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/QZMEP2481934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31d048dcf7f7464da3d6f33ba81e8995d2e3655bfe5b38b5954c01d0976d5a6. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:40:15Z), 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/QZNWQ2408302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d71803ec0dcbfc73a7cfd349ff84fba668abdf73a03989c9caebc7e85fcc13b. 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/QZPJ32436098.