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 0xbb5da3a80b2c8af7b526467cfeaa2decbb184c30932d83dfcf4f0b55175f228a. 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/2b6e5fa3-5a11-42d5-a826-5255bf3f1011.json and https://artists.proofprofile.net/proofs/artist/2b6e5fa3-5a11-42d5-a826-5255bf3f1011.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Traditional Music Of The Japanese Geisha
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 0x9e85e19fd59c74546b6b665fa35eba8091dfc71e701f9f2507a211355f94ea69. 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/USEEC0612147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf756cf5b945f5b420815890212b1bffde95f7d03f6b31f084659e60430df89fa. 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/USEEC0612148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7ef504dd431fe0e8156ea65670fe37ee80cfbdd2bfa813a508b381c636f7e6. 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/USEEC0612149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x030268a6af62000155c027ba6b21d8f3f6a6df57a12985ed54f4ceab5d1651b0. 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/USEEC0612150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c8dd9405b1aeeb55ce796df7aa01c3f648c7693db5b2d7f9df5f4afbaab3c37. 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/USEEC0612151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be364f4cc1980ab3f68fa44ea8a8677b137687b2dd504220c8946a3860df006. 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/USEEC0612152.
Toheganse / Kagome / Anta Gata Doko Sa Hana / Ichi Momme
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbbcf3cf623cc03956ac8e60da31aa99838839f84df90fb745ad683b52004d4a. 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/USEEC0612153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1235cfc7ca86b2aaa880ba4744d52924733d2c01d88f64b78bb0689909221a8. 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/USEEC0612154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3bd333092606c358ec3f5b9b3761eb9cd51733c8e10df1d73fe86f210e427a. 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/USEEC0612155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0475b494f55894ec9545689794d224dbe9246baf5aef76e962908a79b76182. 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/USEEC0612156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadcf071662a1f3d3e8e206305ef768e545ebc76f282de55618e1ab6920be9cec. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/USEEC0612157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509fe7cd68d969738f3109fcaf3c8035bd7fe2b8d362ee137ce9c455a02e1600. 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/USEEC0612158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3aad93a51fbcc523a63e8013cb3f93a68b4a72c5bc15d44c3e74bf073aae32b. 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/USEEC0612159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79751d677ff1b0541da8370a3b02a5fbaf332cb12bc9fff88b39fc52b8c24b7. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USEEC0612160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc25dc116db6693f514aa876d1d643168a26f76120f0e768d3f282abc9706f80. 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/USEEC0612161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc2145e4d5a395dffda668e1dbd5c5686b77597b047e1eab32cdbc34545df37a. 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/USEEC0612162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150797a0e7f1bcd79570eb61858e65d1a1902ec3bc75941855909b8d72ea058f. 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/USEEC0612163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5d14e86f789a0ee9d1079cc4565fefdc7fca874979e5d38eb414cc597be8a3. 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/USEEC0612164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551d28dd7f5bab5c12747cfc5fd24973b5eca8ade4a9ef235279be16a5549075. 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/USEEC0612165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x117b185573ce2878057d89bf78183551aaf3a829aa1bdcb5c3e0ecfd3ad2c903. 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/USEEC0612166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cfa3d1eec61deeeb26da3b0126d5aacac7e5dc808f83157022a945f2c21ef51. 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/USEEC0612167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd442bfd68441a1988495942466222e0dc38cddd83b2105092cff926af545c9. 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/USA2P2322100.