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 0xc23be44f72ce9094fde28b88ae833281cd73f9d39598840e284f32d428e957ed. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c47207d8-6baa-4816-ae1b-097c8fb92f87.json and https://artists.proofprofile.net/proofs/artist/c47207d8-6baa-4816-ae1b-097c8fb92f87.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 0xf66428077b9063a1e7667d27c840b4bdb9bd78b3f4334a6cfe67f9c5ddaf0c9f. 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/DEZC62250204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x855ad2f79200032a209949ae69f654c709552e31886d81bc996834ad0966339f. 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/DEZC62250206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef6dc7825723cba062477eda6f2caf1d99f16b3fc3e5cd25ce07307e28e78ca. 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/DEZC62250207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee90fe6adafbf194ac832baa6702c07f1c9dd0e950c4d365520ec68ee90e8f2. 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/DEZC62250208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb607ee9b5f13717642f650487e5490d77ef17448003ac362533176900e21cad4. 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/DEZC62250209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39784d631c3894cbb94e69067dbc7a914bd12bbe8911cb52b2bc92427330eca. 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/DEZC62250210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce90a9d45352808cbdaf879ad551cf85f9368319bf6243b7fee5910aae88787c. 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/DEZC62250211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ad94413724fefc17f4dc38ff5fbb06809f875a6ea6ef85fc368b2c0954ce13. 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/DEZC62250212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85bc5e7795404ca946fbc40bcee38875065f050aa86000de72b1c76021f49acd. 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/DEZC62250213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf5813b92fa1e776d507c3e0235ddd4fb327989fa650d1bea6ca5d1513e9c6c. 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/DEZC62250214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4f23ea5500f5d1e892504d122903140e4f36c5618059b8542c379249ceba54. 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/DEZC62250215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c39b72056af525ad6cb9bc97783744f404bf9e726148fc1d826e9833f93498c. 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/DEZC62250216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d1c38c517faa05273a715d22f8417ab9f9bf5a3dd953830e6d8482579d2517. 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/DEZC62122806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd889b46f53d29e3ccacfed145a8a81c4805995e0760b311cf550c26b277c0902. 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/DEZC62335339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaade5fe6b40e0225b04794b52882a8f77cc790e1dd74fe4ab334c9e96f1722fc. 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/DEZC62335340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d85984f2fbf92644814c4c7d9ba4163fa4e296e6f36b8dfad9ced1fc2a7859. 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/DEZC62335341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f1baed41222c6ddaf7c8f8570a12888a9c8406166fe41a15cba2ec340924178. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBLPF6773366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6697fe5224ed6d8374285e8353ccdbb1584fdd0b28f9c268df575c064370da0b. 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/GBLPF6773822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f1baed41222c6ddaf7c8f8570a12888a9c8406166fe41a15cba2ec340924178. 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/GBLPF6773366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff698c037a06b5f992d1994a222ea4b343fc3900be01f489192e9a5df01a8ba0. 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/GBLPF6773823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e395c459eb5ca2898858f437df37605bb40eb0406886840fc6a99da989e0f8b. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBLPF6773824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x644c1639af5dc4c9c1dd8e293689580a61232a45181b37b8336cbe94f5349c3e. 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/GBLPF6773825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026fb4cf710f61d51fdb84619ddbb168c0836e48f599d999056353c516ce5017. 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/DELJ82039743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e22cf050953d86fa6d9c33184697c39bb5d5fdef2ba1dc7971c6d96106ad7b. 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/DELJ82039746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a3f17dfd36a4d3ce9d908a5cb4301d341d48374f2a7cc90ff253b844e5013a. 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/DELJ82039748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744c60eedc2ee5077d8770e473de050b353731e79bb81e81c376785134f75f72. 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/DELJ82039749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x618afd5bca8e010c85a4af7c508f142a6230c625e1d74ae8776dc2512f50dfa2. 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/DELJ82039750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0bcf28a12139c4abc4886000f8221474defc363d5c3ece80a04cbd7206c3ee. 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/DELJ81933632.