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 0x5bcd73e27f932944e39eca9370d92e7b79cfa03fd8324e2985665a8534d5b229. 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/bed5d3e1-2223-405c-b853-2aca92d59a53.json and https://artists.proofprofile.net/proofs/artist/bed5d3e1-2223-405c-b853-2aca92d59a53.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 0xf2a511e07aa0dae15874e8605e3d01ed70b3ca29f751a763468b679996707845. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/TWN711200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c53e2dde636d0ce0b517dbe9e5c8980634694adb20fa421ba1ce7d2eb5741c. 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/TWN711200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697110f36dfce15e70ea814c8c928a17ce049fa5766754ebc0c34e2d2adaaa33. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TWN711201002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f649da0f5c2c59a8a59cb65edbe35f0e916388f171775f090a5d7d02bde0161. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TWN711201003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523013bc408a29acc19f01e6eb3c8781125375502da82c2e9bc80050e2fe355c. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TWN711201004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x302e48d0aab6910fb7dcf63c614d0fdd57da6c5a34aa0c300ba2699516e401e2. Chain 2 (Bitcoin): anchored in block 957558 (2026-07-11T11:36:38Z), 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/TWN711201005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac5e404c9ad62bb9c908550ea8a3e744a2a6c3622ebbcd44fbe7bb2805447c74. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/TWN711201006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x084b3d48594abac7930520f51785d423371dbbd6c60cb04c7abeecd80dea4da0. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/TWP011525501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd4c437a08fe73227760d51f2ba92bbea11f1c01e186a22f3e93da0b3926e07. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:01:48Z), 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/TWP011525502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x961d2b9f3baf3611eacbb7ddba1aa1c207766db38becf67da08805e3c7263521. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TWP011525503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975daf4bdfc152f757926d4623b7dd734ede261d26f5f202fba6f731cc1591fc. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TWA471702003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdcee85eab547a16291c4f83948eaec111c8e24cf9bb4be81a55e798a1453d6f. Chain 2 (Bitcoin): anchored in block 957565 (2026-07-11T12:18:39Z), 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/TWA471702005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cef27e8dcda32db359fc264d52c6cc9209ff190987e2c4b0880bbbaeaab6756. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T22:03:20Z), 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/TWA471702008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d3e2c5d4539f69aabdab4ae9323787ea5a44f367fc814ab84e5213481028c7. 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/TWA471702009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb60fb2be09d3a40ba7cc8650286c6c7a7080bb0ba6d05d020e13173ba8db11. 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/TW2151930001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x864131db757523202faffca7ac0aa6b457d2f6aed0a59086456e97a44301bdc8. 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/TW2151930002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x873314e5d86266283f4f674453ae41e40f0a0f3b26b98acd2e1f397568e956a9. 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/TW2151930003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42e9bc3f733a6f92ef7c4f751b40b71794c9f7abf7d666f92455e775e84748f. 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/TW2151930004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d1a5cb399058ac737946a0d721d0c7f3a560bb768dc324433ca5d967461cf6. 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/TW2151930005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa709a47914f2ed6448011728a35608320d65ead6b694d0528692a5b7a87a8ca6. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/TW2151930006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f6f00d9fc754b330433da801efd807617c1c9909ce308481ec033072100d43. 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/TW2151830002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54581f0593dfb22f1fc17da8611e0bac33c8122b6f0f5c3f59999b0b109dde53. 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/TW2151830001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0200f07be929c6d70a28ec8451d7e2c45be5b1ee8e9509d5eb4752ad3ea7573b. 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/TW2151930009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055a49f70712563c0bc8654d943c7e7eac96ba35a94f203e1a1030759dd406c0. 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/TW2151930010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a570005e6442136ba445094c2f9e99afcf0ac1cf6c9dcb5e3401b71043f8f23. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/TW2152070001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e77c2ea1663f5f4f09df1e9102a5d5ce8f96f02c51b8d478e7ceaa2f552ca4d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:58:33Z), 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/TW2152070002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5720cdfb41f71e47b4d58517dbdc56331ee17ce7cdaa5d59b4c1d582ad83b51f. 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/TW2152160001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d0d83201daa59063e54045f095718bc019c67278f255bc2d870b32d541056b. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TW2152200601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d0d83201daa59063e54045f095718bc019c67278f255bc2d870b32d541056b. 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/TW2152200601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa203c0bba36f588f7a7e9592ff5c1772efa5f483f22e196785bbfb57a9f40b06. 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/TW2152200602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5701a9bcb18f9a328398a97d54482b734a537e20d84c6f05a81b17f82585767f. 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/TW2152200603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ec795f4c904954c54430b47188c8aa3685b854a1e887944771da6b3adae96e. 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/TW2152200604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4540b4d7545f9da17c28165589cf641a6e23ccb858961bb412fede52ef3bb790. 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/TW2152200605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae9322d3cb1b46dcb678d1c6c0ffa72f0cd55c09314850ba81cb5e2ff617928. 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/TW2152200606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1bbc01d55f617d799911eb952788db601238a79f8045f916d120fc5cf67d075. 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/TW2152200607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5720cdfb41f71e47b4d58517dbdc56331ee17ce7cdaa5d59b4c1d582ad83b51f. 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/TW2152160001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac8d7358fb8a43d27a62f91c8eda86ecef005860ff4d7dc3586e3652114bbb5. 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/TWJ012300705.