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 0x46a8663a1e218f4f9faeedd9fc970b5e5e0b3e86137434acf5ad398dbffcc15c. 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/e68e2491-63ac-4834-9fef-cf6576a58637.json and https://artists.proofprofile.net/proofs/artist/e68e2491-63ac-4834-9fef-cf6576a58637.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 0x910c26e24c1896f6176cacaea2efb77db7b71d8077f1d891f7987072dc550631. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/UKXN22104709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b222d0cdea9d5e398b4439a4ddaf71b23d93948f31b08f73aeb64dc5bf31633. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:39:29Z), 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/GX3Q92184960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67be00e06972299068babcb5e23477fa669b2017531a6c533bb6f03f461bf951. 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/GBMA21857560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c5f6f936e611131770d4792cba5c0718bc6f57c16e6c74619d812a2dbc6211. 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/GBLFP2043047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6e4341e9a41370f8882f5fc560645346bf9098145c95ca1515f6a0ef4a1309. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GBLFP2038764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e79a61cd22a48713210f0ea65eba6e137cb8ace7dd7bfc549b4428d0053c3c. 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/GX3Q92097506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f2942632d1afbed469ae57de5cdd9f558b809700e9760a1e28095d113764e55. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:38:54Z), 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/GX3Q92097505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5cc3aec6b271785ee614e6873710b87f1beddc0fc9d89a2897f7ced354ab37a. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GX3Q92097372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b80b79c871155893a6c9f6aeb0498c1a77d3dc0b2007632ed35fb404da0440. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/UKXN22098713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x441842023a420ecd99c489e5042316a8f6e1ba08da6e270c0cf0d7e6adb297a1. 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/GX3Q92096851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b68e2532f5c9a8cba8ee1d94805bb49ad55c5a92cd8e5c74d2299b997cbfc09. 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/GX3Q92097511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf05c3021a7726b5db2a1b900b5e6a279ba7f87a5872026bfddf2b188b5d41c74. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QMFME2472114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49fe8522488836998328d19b547c213d20c26fbf6426b652800c2d4fab1ac675. 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/QMFME2472112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf05c3021a7726b5db2a1b900b5e6a279ba7f87a5872026bfddf2b188b5d41c74. 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/QMFME2472114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f19b55c2e9d19e86efaff4c27aa75b4cc211c3b24ea631a8d07f85f6fae9d56. 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/QMFME2472116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x792ce0db41711b7dfbb6ad8b67ba7cfd3b6eaf8fb86084fb980af608a6e38d22. 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/QMFME2472145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc0fa7b6b811062dbd183f7b0cf2550a022f8b4abb6057aa4256e018d6e7e52. 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/QMFME2472149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe53e8a59f8326eea04b7fcba1d666a8b28b9287fd8b9a46b88a497fe58e6e9. 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/QMFME2472150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa546dd28a7d3762454e250bbf06e11ffb832d072359f1fa560b547ddab51ab71. 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/QMFME2472159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7c8bfbdda40e837da435f01df990beeb4a17681c6aa2334e226a595eeb16f3. 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/QMFME2472161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a53bb26c308bec905e86cad488de8bf31499e9c717da2ede25ea8465fa14aa. 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/GBARL2200129.