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 0x121a523cdd061f05793c8a3bab11d632b74fc1401a39531441a0ad53a415017d. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b1affb9b-7e6a-458b-857e-6b99934b820c.json and https://artists.proofprofile.net/proofs/artist/b1affb9b-7e6a-458b-857e-6b99934b820c.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 0x09e1eb159893ecd090baf1358699e5493781942f269aae6ea0f0a897f7c6bdbc. 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/ES65D2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c7a3a030ed4e07304891988aedc9ff725f7cf89c31f9a7108b653e08e46bb6. 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/ES65D2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844062a631d9a37d0b1c0e6d535d55b0ba56220720250fbcd29211fa23a97b95. 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/ES65D2300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd861450daf8954718d635d73691c1994e99fd7ffceca4ebb43a6aa63f232f1. 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/ES65D2300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d4f65399b34752e0b5e450ae98f51ba93a42c3eb9c09494c7f129bc7149d69. 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/ES65D2300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a08d6d7b22625ac1ce0f873ce7426955855e539643e941d9e1a8f566c7a54c1. 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/ES65D2200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde0f51f9719deee211d0c4a6a2fbf9748d9df459def8a9be3b5ff53945fb62d. 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/ES65D2300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8afb979ebebaad392a81b97ce69437ce7ff847c81e5eb5e2b690136635077f0. 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/ES65D2300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c991d49194fb1593381802cfbb7a4f069b16346a87a71e2076a113d43ecf0ab. 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/ES65D2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8057477188cafcdbfc9a8bafff84b6e1f246abab80f730038661f096f97b36be. 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/ES65D2300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f47d5ecd416baa40b8cf7cd70e84f83a8dbfb27abdc81f277023abb887ec703. 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/ES65D2300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9956b3cdc0dc6bfa7d7e17ef9969b320b6850ff38e26fcb82bf95251f851a2. 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/ES40E2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3195cd73accfc0602b34b7aa5f8bbeeabbd5849e95083c7a87c7f2e3450cf989. 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/ES40E2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ffe634a63e6292cc384e209a240554c87fe3cf6a72f42a65e8bed9923d944f. 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/ES40E2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b4d5a5ed969927aad9a2cbf81be332b9dbe8221e600da075372bb7e75a64ca. 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/ES40E2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93459f1780bcb84c26ae87e7b5248c3a2c31feb7caaac99c62a6d87ee78d640d. 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/ES40E2000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b20769efa9838097762709a52ce7264c647f11843c7579b0bc8c5d89708dcad. 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/ES40E2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x663a303c3459646388608cbe9ce1bd0e0662691b0d0a941ded54803f52960cb3. 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/ES40E2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994aadcea6ba36edd29f9b888366e2a4019bca501999946fdf38a391a9cdb221. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/ES40E2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde0f51f9719deee211d0c4a6a2fbf9748d9df459def8a9be3b5ff53945fb62d. 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/ES65D2300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e1eb159893ecd090baf1358699e5493781942f269aae6ea0f0a897f7c6bdbc. 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/ES65D2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a08d6d7b22625ac1ce0f873ce7426955855e539643e941d9e1a8f566c7a54c1. 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/ES65D2200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c7a3a030ed4e07304891988aedc9ff725f7cf89c31f9a7108b653e08e46bb6. 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/ES65D2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c991d49194fb1593381802cfbb7a4f069b16346a87a71e2076a113d43ecf0ab. Chain 2 (Bitcoin): anchored in block 957057 (2026-07-21T20:44:26Z), 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/ES65D2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x470451c77cf9c2197dd0550befd899fb2b8a5308bdbb56297953a387b8021056. 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/ES40E2100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5a3085e1823038b98c63f04613a5cae114ea8030bb71442799b01b9b284a68. 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/ES40E2100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a60db8edeca962c513269e2b8f4d2a4bb99065bf0575725af8e1e255e11f2c. 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/ES40E2100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dfae3007b6c353a6a5040410f86c51280b89e716017f1be4e26ccdb5f893d33. 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/ES40E2100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5a3085e1823038b98c63f04613a5cae114ea8030bb71442799b01b9b284a68. 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/ES40E2100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x470451c77cf9c2197dd0550befd899fb2b8a5308bdbb56297953a387b8021056. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ES40E2100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f9ea7324c075997618ae8c38af7ff2db6638d0a3247dbb655eb504f5dcff3b. 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/ES40E2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93459f1780bcb84c26ae87e7b5248c3a2c31feb7caaac99c62a6d87ee78d640d. 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/ES40E2000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ffe634a63e6292cc384e209a240554c87fe3cf6a72f42a65e8bed9923d944f. 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/ES40E2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b4d5a5ed969927aad9a2cbf81be332b9dbe8221e600da075372bb7e75a64ca. 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/ES40E2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad80fd64af3e7155e7138955b25fb5fb538ff575d2088fb9da47d56161d38643. 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/ES40E2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd15186487ec5709768f87fa8e4ae7351bff0e589e29e23ab8790ab6e5212ee8b. 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/ES40E2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e035a8cbaf0f6969ef883d0232373d5413946307bb4c149d6e68e80c552e93. 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/ES40E2000001.