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 0x4078906f369fe2436a8e07d84714f39e999b103e92354d0d3fb560ad5e7905c9. 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/f116063f-3085-4ecb-903e-fcd3e444cce9.json and https://artists.proofprofile.net/proofs/artist/f116063f-3085-4ecb-903e-fcd3e444cce9.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 0x5ee0bdc0d26b1694a351f8dc9bb9bf8ba5d7ebeb3d57f62489146f984db4f08a. 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/USDXS2204368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509c1863b1e0743a23f53bf4be76499185f56539161a9a53776955cd06bf4693. 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/USDXS2007417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df11b87090f1845a23138a4b0ff32de604003194cd42989ed4abac791de86a1. 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/USDXS2007418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b702f8bfd5f24e9c952da9b0f793105589868c974d07ab0d7c56250bd38425d. 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/USDXS2001050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ee3aaaa1278164eec29bb1d790db93e277323ff39abf0acf7e5a07d1783e22. 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/USDXS2001052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x016700065fa3592579e8cff7b943d4f151d4f26b6e79c6fdc7d8851b1ed6294a. 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/QM6DC1901514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19dc4402d8515a741aeabbd71f3a7ef97870784300379d7564c470a6dc4522fe. 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/QM6DC1901518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f78da6f7540f15b15eb64ae6b7bbf6579496b34d022963c4f5790830a8a063. 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/QM6DC1901519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e006c8ea40751a3b41a17a091085f51f9943c6fee15c91ac8011790dc0fd7a. 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/QM6DC1901521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5dc1e9f2c3d5a25c196d9a5e7f249634fe87dbc8a00a0730711b3ebf5fe5e6. 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/QM6DC1901523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a948040842e5295eda8b4e3199871e4d11104ffad5c7f36b5e8bf4722f626d. 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/QM6DC1901525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dee9dc736a9bb4bf2efe34e357f0394c2fccc678812c306b26a15b858cf9a95. 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/QM6DC1885795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8781e30b88508bc731e838ee0a5780b8d8974972dd2e2bd92eaee005a8c271d. 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/QM6DC1885799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5e13c1ea051ec151d17dfe63e84e3ee88886b5a67044eeca07d5f01de78e0c. 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/QM6DC1885806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x427585572e61881d01105f093c93c45872d55e323b5f2787e18c405abf1d1ffd. 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/TCADD1762383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef83b3ad9996dc1fb081edf928599e08f21cb872c0702fcfd1aec1d29769be0. 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/TCADD1762431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa073f21b88e1f728e0808cf35613062f6255c99c93b1259af6d1c09713a7d789. 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/USJ3V1387804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5648dbaf3bd99e25f481818386bad1c0cf3c32eec6cbd2d3defcb71fae3a1e5. 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/USJ3V1387811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f5845f6c46d10bda08255cfcba405b674bb42eb6cd15dbc927f6700098fe54. 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/QZ9QQ2300652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b5c821bcbee3062ee2f2a3715c53cefc465252e4988e082b343ab888240af19. 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/QZ9QQ2300636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf19ba4a844041d34227c0399d27113fa5c74402719625212b0d6296d30e720fa. 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/USDXS2302570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c7247aa5ec9686d4076aa8b06e4bd382164670535b3e0588b4c63d5790227e. 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/QZ9QQ2300493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc086aebceb684d03e20811026a3d2fd5251e8ef79d4afbce13df7233eacc9aa7. 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/QZTGS2300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35c14f21e8097df451f0c7737dffaeb6a8c93db5ff9ab841994688c571b25020. 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/USDXS2301889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb046a6f4c2b984b4d3a1047d20d6dde4beafea81fa146727fc52af3fbcd06049. 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/QZNFJ2403108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10357cb72f95386b98c2035e8fd5de4eea6ea01f44921c378745a7553dd64b60. 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/US3DF2410911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181e3094e0bfb553059d463993a86f512f1202d98ab2415ab119f366e05a436a. 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/US3DF2410910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72860a04897dabe85186edc9a43ce65e3f409ae144607539dc6cbb704a414c23. 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/US3DF2402852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8951490f3492d9f21e3f8ef24d4eba7f96bffc40b7dda1634d62c236348759. 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/USANG2121119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b53fd59903b13c74196a386b775cd8387e46dd007fb602c9816b96ca2634ce7. 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/USANG2121109.