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 0x3a6b141a40da304c17960541dd77f2009c245df821f5595b2b6cebb4f085aa58. 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/dccb57ce-7a81-424c-8389-26b035828324.json and https://artists.proofprofile.net/proofs/artist/dccb57ce-7a81-424c-8389-26b035828324.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 0x2c78486e22679f5601b19fdf1984f612c41b6326a16ea5c7a0fa1abdee76cf62. 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/FR96X2390710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f111c911e2089215bbfef0286eb8fd15c7cdbb4a4e82f06e96256438066d16. 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/FR2X42367997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5d0ec4dbe94bf950e50e4a528abdb3e583fc5b46ec9f7a0828c7edcac86468. 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/QZZ972479907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd42bbbf1806e485e1261059c899c5f5514b4dc076748dbce13130450f3e3d744. 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/HKG731620443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d89be9166fb532da5b99a5a7fb632055663b2fd379e004f511520aa627ccd3b. 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/HKG731620538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4e30f0685a1cf97168a74547b00dd9173186d1306f715f01ec09a5f7705caa9. 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/QZXLZ2317027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee74d6b1df4d1c87653b861cc0ecf35cf37c92d946a835f36a96cbecf161a058. 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/HKG732274400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf757e9731535e01332be54c701e2b3b5b2bbd74588f7e142e57c4215add0b0e7. 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/HKG732203471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f76a7ef7bd3298495b5aba2064d00c74cb4ac5552b805aaf31cc09145126e5. 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/QZZ972326375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4834ae12df4fb51b3e94ad6e60622e7668e903b33b76953814fdb081ce876740. 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/HKG732111272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da15ad2f6a0177de63b2fdd5b22d6501a83e5fd90840260ec22cb5cca0205a5. 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/HKG732106613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d5006314ef1ee55942f744a7627fd25f87eb8d83395eb7cf532a6252505e13. 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/HKG731620539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b86bd243c1e24d2a9f0aa0dacd420bae08bafbfa29c3e98fb873167baac5dc3. 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/HKG732102561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24236a199aa9635f57748f5a0582e04cb8e610ac01d6add4bc15534b6aa7dc98. 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/HKG732102562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa1d0af48ef9eb91ea292ed95da3b7fb9648faafe8e1c09b17d35caa289c838. 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/HKG732120892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x873542083f2f0a183ae91a14ed2806efc1df4587f7b29e2e683e922c740ab417. 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/FR10S2320065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a55d696cd72dd382a3c11276aa0e20c45ac2b6723a779240f02f73dd9ee41de. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/HKG732298375.