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 0x4e975f4f489e470efcbd4a19ea0e503ee1d985b52664f514af7751362ead3f2f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d547ffa5-d82a-4a8e-86da-c3a74b792587.json and https://artists.proofprofile.net/proofs/artist/d547ffa5-d82a-4a8e-86da-c3a74b792587.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 0x1281628aada5278afac48af738dadd3f2ebf3bbf2cbff43516ec13eb5e8ee9a5. 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/BCDFI2200063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11097b2f848a47ea461eacf462c35fc25bd30079762594d2dc35ba0bf45de44. 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/BCDFI2200064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed36ce7435e4cf267f35802587dce98cd378890a5a5d8c1b12b75f341a50efe. 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/BCDFI2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8857a2a92ce53c635b7f2e282ac502d486d24ecb4c6c5655079ec603b59516cf. 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/BCDFI2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55fa598b7dcf06ef819d4f6117a78369271be17383e08d826e35d6005c026f94. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/BCDFI2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb504a1fcbda84bfabaf504ed2a6bb347226d9113d1bc5e790c94b4ac087e8b65. 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/BCDFI2400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb53a5e919fe71df6fd36dd91652f2209deb657c409dd68dab94c963c0757c5da. 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/BCDFI2400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa281c5c2723bf8a4cd0fffa60d1c04efecbc6217114dc6ed75aa4dd66652525. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/BCDFI2300058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2340d50c115defc06fdb28229364c683b50cd0572fcbec4d9ce4099d823fd5. 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/BCDFI2400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39806cff5ce007a712745456e7d0db474226d36e0d4de233d9277a6bbaf1adbb. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/BCDFI2400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa017c2217af66d62caaad29fa541eef6eaa0c6933da0a443fbecd3024783b31. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:01:58Z), 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/BCDFI2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x259803db8659e69fb2ffaff3f0515eebf0190562527413823748cc458f2b18d1. 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/BCDFI2300096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ec40d8b80f9734a840d448ebfdf196e2d4e6f4bc4dde9f8b1554704316264a. 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/QZNMT2443909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39fe5544879ee4d22a26de800c5ee2081576b2058c8a8cf49c4bea8f5d388d46. 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/QZW9M2409221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1d39025a41e2d60207f5a2aae42218a45d1140cef766a75e4c38a5614ce3a6. 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/QZNMX2390074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb64e329af4beced59026d6868cf99083379b2dca41cb94567941f3c147a6cb2e. 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/QZNMX2390075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c186fee95cd28f3cadb44606631dbff2ffd8690d977a0e6891e806f05eef18. 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/QZNMX2390076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240070e4c23291c44f5f08d2e24425292f5278a32d08af86c953887a8043542b. 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/QZNMX2390077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21144e9e4f22b66765479eb0019e28262edfa6d57539741ca3a2684d98208bdd. 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/QZNMX2390078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ed3735d35b7328e9313a998d51befd62d569b0de31db91b5df9846569fef66. 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/QZNMX2390079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1267c27865bd200d706368944cbd63cd2c14e1aa0fa1ad7eded399eea82fb210. 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/QZNMX2390080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce082eb996901fb6af37185042194a27b31073844ed4939717a55a4f92a239d. 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/QZNMX2390081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dfb8c0e04e20379a1af042769420278ce843727af10632cff3f3cec219fbd13. 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/QZNMX2390082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08450ab113771c40aeb70072f7907fb3a5468f73337d1226aa38ec145346ea24. 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/QZNMX2310142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb512e53a53def93cca7d58f7c853dd921ddab00ea350f01385ef7b8cebbeea67. 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/QZNMX2390083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c87a2009a09588bb2feb4f4045e1fa7bc0e41eee4959283cefa0e7b8c5a55b. 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/QZNMX2390084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc61bfd988f982d18b1d43f378910b3a8d72438a872b2c5a1560e94b1f5d08164. 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/QZNMX2390085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07225d9ba914ba6f75467f7d1a071ae0bd0a376840040425434a4536c60deb37. 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/QZLL92482079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c2a293d9c77458a4e811c7d5f1c64a87205e5e8fea4f0a6139340a91730cb81. 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/QZLL92482078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ec40d8b80f9734a840d448ebfdf196e2d4e6f4bc4dde9f8b1554704316264a. 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/QZNMT2443909.