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 0x1790e346f62f508a3e183c8c53d46741ef342f11aad2e7c556079f5f14dffb86. 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/ee699c2c-56ce-4c2f-9674-7bb82af13714.json and https://artists.proofprofile.net/proofs/artist/ee699c2c-56ce-4c2f-9674-7bb82af13714.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 0x63d6b0d61957824ed70321ee0313a37d6064425d240ac099d37275325ca7583c. 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/CH7812400086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c33cd999ead7b9c3443181e3e8ba5ebf3794f099db69089d54830082da5e33f. 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/DE1FB2300067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x486bbb187efe040c79cf3ee18c409bfa4ea147dca040f4736293d5a14d702763. 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/DE1FB2300077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3870674c97336f649afce25b3ce5c1226f18adc87767cd17589e29175ac2e74a. 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/DE1FB2300114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576e55d302103214aaae304ee95b34992bf527eb09e19de3506b2438bfe4c9f8. 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/DE1FB2300115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42ad26ac10d41135fd48cb0d631f73925b1e0d5ece142b607ea9ac8f5d94186c. 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/DE1FB2300142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8e9cad35ec1a7f3bbb2a397d5379be317fc51b37f614f81d9a7ae05397b537. 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/DEH742421936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9410cb0fbac3a96c15aecda90307eb1814548aedd75c6fb12e0f0d86b6e6659b. 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/DE1FB2400196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98dee9de7680cb7fbe11ead4d1b9e8ebd5e933c9b1485595eacfb51414b29a19. 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/CH7812410173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa03ba2cda57700575e17a2ad2ae94d1f2c02570e45b3abbaa7d23af755b9f6e2. 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/DEH742417419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa06ad8ff79cb8dc4966d576359587bf474dab308115da2d76f1d4a36f8f26a20. 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/DEH742406951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42ad26ac10d41135fd48cb0d631f73925b1e0d5ece142b607ea9ac8f5d94186c. 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/DE1FB2300142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576e55d302103214aaae304ee95b34992bf527eb09e19de3506b2438bfe4c9f8. 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/DE1FB2300115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3870674c97336f649afce25b3ce5c1226f18adc87767cd17589e29175ac2e74a. 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/DE1FB2300114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x486bbb187efe040c79cf3ee18c409bfa4ea147dca040f4736293d5a14d702763. 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/DE1FB2300077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c33cd999ead7b9c3443181e3e8ba5ebf3794f099db69089d54830082da5e33f. 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/DE1FB2300067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576e55d302103214aaae304ee95b34992bf527eb09e19de3506b2438bfe4c9f8. 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/DE1FB2300115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3870674c97336f649afce25b3ce5c1226f18adc87767cd17589e29175ac2e74a. 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/DE1FB2300114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8771a74b1067805a6b381a4c36e50d5ea4e48706d7b78b6c0553e2b56283a3a3. 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/DGA072365243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b80df4224393def7651c369def1743b7d9e2c762e965557ec7215f6d3977d0. 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/DEQ022371389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf7fa20198d4b40ac60438651c1d320dabd5e7cd4650b9b0f0bf4b7f3033c49b. 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/DEQ022381319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd4047f2b0d9d7d68b9a8367382d38f2e38c1c0e43e0f37087af51af7eb198a. 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/DEQ022380009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x505ce2be006780c09a105f07c60d335b9e5fce653acc66cc7f8211fa80e14fd9. 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/DEQ022380008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb930dff07f7f4b251251f56335e56576cbc4eeb1eb8d7d9c532d01e45a7deda. 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/DEQ022380007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd64cae69dfa0fb97c242273221a01e0c4096df1bde9a62acccd56bb936bb03. 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/DEQ022291618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5454370510ab75e9df20ed7926518c24fc1b3099574e17a5dda9e918555f0108. 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/DEQ022291619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b54c4e14a325c5744250b8d87e619e5e507c8f202ad8786efc259f4afb9c21. 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/DEQ022291620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x325483b7a98809f19b831b3f6081d6007888c1d80a213cb44b4bd12616d8b560. 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/DEQ022291621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x187282e09e4c372d70fbaf78d82014c9126d4598f0fc8557e665ad6fbf36b472. 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/DEQ022291061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b8f055e11955d7be936d2d10532f21eee0a2e47fb4d8fa32f3853a49c7ad4a. 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/DEQ022291001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9eeffad7a1df876a1574b929ef61fd7db6a219b6236691abcbba1d6304a2cea. 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/DEQ022290924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf4d45b0a44209b75a7beb23abbbb82ac3f6ad64804f68e6716dc780db5a638. 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/DEQ022290549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed75db4c4b543274e01046c7b179c3ccd7ba1bbda02bc59b7ee00726c95374d. 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/DEQ022290548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb968f7b8e425f757e8131a68e44b8570898add46acf6cbecda4f7ae0d9b0ab. 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/DEQ022271053.