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 0x673fbe2135bb31333903864a616bac81507cea8006dd8e0e0b720e21000e36d4. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d16999fc-bc9a-47c5-b35f-d6b661c529ec.json and https://artists.proofprofile.net/proofs/artist/d16999fc-bc9a-47c5-b35f-d6b661c529ec.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 0xe3d8e2c8f17ad77ab7c5d0c1a26f1038e69d5642eaac8b0e2f0c482bc694c663. 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/DEEC31810347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1477f11dae03ede7e6923f5e1ec93b8450d7228b06bd1240a796cb4808f87307. 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/DEEC31810349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f72419605ba64e0b08bd6b6baca959dd8ad38d0cf0daa48efc8a4d30c7ec1ae. 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/DEEC31810350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4692b008e76c806fc7164f76ec4902c6ed0334b0b40c69b1d227f9ec0b0a75. 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/DEEC31810353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04dea17f42044f601dc7e3b4517bfd769dddcdc88b93a634432bfd3346f9578d. 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/DEEC31810354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe64160d7354658b26fc3658c7d985670dc70a797c7dc3d70d60e763a8651e47e. 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/DEEC31810358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f96823fbb9147feb1d5f2e3e1c825e38aa86bf358dea4abb30f4be710c9604. 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/DEEC31810359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc01c403bc5ab9e8656cd45e3cfecb748da03ba8734b098e63ddc4ec4be7cf02. 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/DEEC31810360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c5e081756ed759ae7d4f463513f82cdaa4c36fc9fd3ffdb6a7670d385dfc841. 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/DEEC31810361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa862e3be994b505cb9e1397e51bdce5f66c2c87f963bc46bef3b5e99c243c761. 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/DEEC31810330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d2be253b832872f1e5b81e2dcae49b36f2b56ad686e0177f6c00b13416aabf. 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/DEEC31810332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a208a94cf4e735271e8a54a448c98915e9161f1ebdd4dc0e11bc2e726f5a2ec. 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/DEEC31810335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b50e9b6ee6187e2132af842cb8671fe1eb63ce5438fe367c3c22d3581dea76b. 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/DEEC31810336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9172d917086d513910c2a9cc3547ce6ebfa572f4b4c1e5dc453028176e1cb82c. 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/DEEC31810340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700935791df266c1a3a29d31b55fd8e002fd91abb50e0d857d12cda051d87353. 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/DEEC31810345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79134f12d537619a0f2520b4945fe79eaf1fd98f669571eccc85e8bddcb2776f. 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/DEEC31810346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7757108ddd834e779fb31c5b3ab52472b56d0c36fe6bc02bbe52ee7b91d11b. 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/DEDH72300106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fa69664e94fca96e12a43a0dfb802d8ef49fae9d48b872bff4671c9d4ab2b8c. 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/DEY472371890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa862e3be994b505cb9e1397e51bdce5f66c2c87f963bc46bef3b5e99c243c761. 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/DEEC31810330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a208a94cf4e735271e8a54a448c98915e9161f1ebdd4dc0e11bc2e726f5a2ec. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/DEEC31810335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe298337d3afadaf85b612689d27a014be48cae06fac1a4d3e2f5b55d88bf4c08. 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/DEY472273518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844a6b48594ad4053fe340e0730721a0b86044530b9f03e9f413bcdcd7d9f99e. 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/DEEC31810234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94520704f79d737144420fc827ca1fb84a1c5bc1ef89ce345dd3416178c98db6. 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/DEEC31810235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef17c0aea8c949fd2511e4a7d15c086d9ce3a83a044d949c8da5c0bc105922c. 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/DEEC31810236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e738ac770a388e6bdf8d65de37cca3f0d1d0a8dc359be93a42f8a26dd0777d. 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/DEDH72300103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7757108ddd834e779fb31c5b3ab52472b56d0c36fe6bc02bbe52ee7b91d11b. 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/DEDH72300106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c57ac4c7b6dfee34c148e6c164e59ba24ef020cf0ae89ec53803e6462a350fa. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DEY472573743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d3a32a0d1d8e8212f608e022a32face87c9089d1784c924357960b85357133f. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DEY472573744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d3ce48ffb29c69a60777e91f35463f4fa052f9d096da77dbff4d0f628fda91. 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/DEY472573745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b6f72dfe82abd5f499b93c91b14ab8b03058c3cb7f737ac4f455ac2750157dd. 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/ITSDR2500541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb76cbde2da8e4d0356afed2510a965363157872dea6db0f4ae51bd258821b1. 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/DEY472570654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846f5f316448b05618d8d9ac41d12db9b03b5a116333de839ce91206ae91409f. 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/DEY472570656.