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 0xbc288caea05f68603e7274385dffe575f9676aa75e75a483f41763583a55f1a5. 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/c5b3ce1e-7ef3-4f6a-b68a-b64df3ffc0d9.json and https://artists.proofprofile.net/proofs/artist/c5b3ce1e-7ef3-4f6a-b68a-b64df3ffc0d9.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 0x349a72be0d8f8eaf03204c329ff00e1d00492a8273e239c3431d68b64154bd2c. 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/FRX762464020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5235c48ec6af92a4b2b8b66ef469415f6174176f85515467f8c1a1796463596b. 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/FRX762464021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93688dbf3b98b3a2d7347d94ae36914466a1b125e4c3a76212edb2a0b2dab598. 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/FRX762464023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x656e7c6bd98fc2b4ba03ebe21bc61060a1b44b5c91906a4b976a0725b4967f29. 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/FRX762453589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b72bc77ef428a38ddfd90aad21d0911a8b1d59ece5cc4423f7c87685f889ecf. 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/FRX762464026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aeef2e9d58ef69f3efce2bcf6f1d3f6c0603ea43fab66005074d7fc077c0e24. 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/FRX762464029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6cd4a29524a597f98c081865a0609b43f80c22ceae2d16d60f50b352f38b61. 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/FRX762464031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7866b5547e4444df6c12067020276d721805aaaae99519d6e355f29e60e9cf. 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/FRX762470982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb815d201e4c8415469b50a4409e4ef360999729ffcf1dbdae64ea54eb3f26759. 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/DGA052415185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93688dbf3b98b3a2d7347d94ae36914466a1b125e4c3a76212edb2a0b2dab598. 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/FRX762464023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5235c48ec6af92a4b2b8b66ef469415f6174176f85515467f8c1a1796463596b. 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/FRX762464021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349a72be0d8f8eaf03204c329ff00e1d00492a8273e239c3431d68b64154bd2c. 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/FRX762464020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aeef2e9d58ef69f3efce2bcf6f1d3f6c0603ea43fab66005074d7fc077c0e24. 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/FRX762464029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x656e7c6bd98fc2b4ba03ebe21bc61060a1b44b5c91906a4b976a0725b4967f29. 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/FRX762453589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b50765ecfb31cc27115b339834f8c49269e52f119584b272be8b19070e7068. 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/DEEQ72418601.