1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x391732875675a59fdb00c4582ca9371ecb00ea2771e2891535e823c3581ea9e2. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/42b3cf60-99f9-4415-8680-ea7d07f13532.json and https://artists.proofprofile.net/proofs/artist/42b3cf60-99f9-4415-8680-ea7d07f13532.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 → block OTSBitcoinBlock must exist at that height 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 0xeb6f307472320e64e5e77f38c8111520b82456f1acc01fb9f5f2cc570200b9de. 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/MXD782202819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6381a135658e3c35b416a8602d16beaa74aac0f93af6e976e9b6bdc4cbc32bc. 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/MXD782202818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0a89d5e04a7b80ed6e491c01ab1fe9d83ebf9304535a96173e3094f50b67e7. 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/MXD782202822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd340ddb1c839dcf094ad1c0d5025e4118288c0c2d586fc0af44344fbe9c95846. 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/MXD782202821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb0d3613853dff785c6f87274c2ccc31fd1aa9be4c6ff4c437f8f8f394d97b9c. 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/MXD782202824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4416639163936d85064bfe3dce08f8b15551eae64948130b0b1adca6d719e3f9. 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/MXD782202018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21051541f49f9ef3fc5257791dcb49c0aaec165edbd788898bd01d4f3a860ef6. 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/MXD782202826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd34ae105059f5103a4608f5bceeaa50b350ed81365e8095182a40aaf96cdc5. 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/MXD782200730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc4c30ec4e06f9b59d2aaa1c4112db6a56d1626c5a48c2a6f9bc5edd4985289. 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/MXD782202825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb067fdad5e739ed0bb5ac1e7b4abf72d54b7e9ea78bd22a681f1a4d572662ad8. 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/MXD782202829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ac8f823d30eba53524522dab67e057f627e8d986585f1ccbe90e6179ab4cf8. 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/MXD782202832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a09eb6c0022a4d71304e49ddc39ef012c32d67c38851a24c0d5043f51b96bd. 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/MXD782202831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d85c255533e5211404e68bc8a562a1dbfc8edd02b5ed00e3102d092eca1026. 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/MXD782202653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa581115da10b54eecfba53dd7ee82cbbac082d74633c0d299850225cfdf1fa51. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/MXD782102569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e9c35ad56a5f033ded887491c51ea4683ac18f840c81969ec1459a1ae7073aa. 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/MXD782102571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372d31a54690c2bbae00f8a7adf48a86608c9810083832c912b7f011835ea141. 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/MXD782102587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de2f431ed89eed98d9e07cac1b9bf1e3fa1669127d6a6cbfb7acc01626c151d. 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/MXD782102578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212ba003fde1775ea6a1f376f8562e3717efcfafa4444708d897bf10c541c640. 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/MXD782102584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc5f6a7b381fe28184da4932008fb7e716bdf6268699de00a15054ded25cd72. 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/QZNJX2199516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e6501b28ac48cb61ec440c066d726e5935bf1d05f0d05fc572dc94b6f8e04f. 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/QZNJX2199519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82371166bd1ee53bab8fa3c26c86e42e8a37115e9283acccf8b5a1c255531d6. 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/QZNJX2199521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8e17abdd5f071121a8f35a9debe9f9c72dc7ebdae19541ea4e0a263fcaca61. 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/MXD781903358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601df427b1e1a976510d5a05ac167578b90205d53dd9e23303f5e6ad55d99cd7. 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/MXD782104647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf828e83e152a06b352149a1d928069f8709623fb1aa2a0dd8b21242d212bd98. 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/MXD782104652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae282579af1fd433d171531b91a194e6c4db11ded93bec0bc20cb426af01b1a5. 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/MXD782104651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54558da29f489acc86e5315b0c3bd4d2cff5ac33ae22c8a3c473e987fd0bbf49. 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/MXD782104657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1240676a234600561ac41b0213b41e8f4c07c69b084229aa5446b22622a6d9f1. 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/MXD782104660.