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 0x1c94a1b946b6d1f238175f69d0d7d33ae362800f3adb7583420592702b4ebecc. 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/0f9f4bd9-2d70-4c65-96b3-f810b421f39c.json and https://artists.proofprofile.net/proofs/artist/0f9f4bd9-2d70-4c65-96b3-f810b421f39c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Evening Primrose - Shanghai Restoration Project Remix
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 0x6dabbe1f641bd523d5e3d33991ac5f03813a1322dd5dc905b2d60f365b20607f. 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/USECL0700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e0b5c93bf06947083b8fe5c7ce2704a5ac26f877d59977e3dca4f5ece09023. 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/USECL0700006.
Rose, Rose I Love You - Mei Gui Mei Gui Wo Ai Ni
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef555e2785b948211478bcc57a5bab8fe46eff58e16be384c6a332b0a3efb4b6. 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/USECL0700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdaea9ce5c1b206b28a75551891779daa63b1ab36f63261d6b4045bd520389ee. 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/USECL0700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6957b67465604dc343692a13cd3f65850adac66c8737f6273b285e1f0731c875. 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/USECL0700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d301921ab800032a1506adfd690c4b75cdc7c2af179d518327c95ad072f3b19. 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/USAPB0810041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x949af0299fcd3d6b4d2a69ee40537678909596d2938c2eee69b534d862b05708. 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/USAPB0810042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09333fe15399f334edf69feeab7f753016f3c08f37e7633d98c2fcc549c53e81. 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/USAPB0810045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593f1b9661ddda3d53d353eb80ef53c4c67c463ffb20cf3b87d5b92c266df704. 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/USAPB0810046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71b3de3b5f10b4377623460932371073f33e5dee15f5f53dbed96313bda91cfb. 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/USAPB0810047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be9b1f78a9c86a620e48f6d3f111fd0759e2e900af6860c4a71ea20626effe6. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USAPB0810049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c0005ec71f60b730d3d20e1a5f0c2458f27459550d96aafedab67bb9a386a7. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USAPB0810040.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa80d01bc5778199ccead97bfc63c1552c4fbf1c0426888f58b5ce04d12b71c11. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USAPB0810043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179b7679767d247a722adadeea8568cb885b5039da69e8ec4ada4dd1fa734b1c. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USAPB0810044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc083fa289e2595afd03bbdfdefda98dcec4e12e21390619516b7e0ce027ba5. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/USAPB0810048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f87d9fb8a2a293841e9ffbef6086e6f001d0271de5b950647491a7df0bd8bcb. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/USAPB0810050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc60bda690d8c0bd3f02aaa0c4b9ef33cb655d9c8b507f11a20af247bb2c0b65b. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/USAPB0810051.