1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x057d55cf2cfdf368656e44ec78c54fee5ab3a65563c54e3ee6b390d76ec214e8. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/46b93c77-514a-401e-807d-f313f471430d.json and https://artists.proofprofile.net/proofs/artist/46b93c77-514a-401e-807d-f313f471430d.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 → block OTSBitcoinBlock must exist at that height 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 0x37abf1fa36a4a72a2aebc5c587389321d2d6766dbc0be81b8ac88a437e7e4890. 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/TRBBC1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9003893564bbcdfe8fe95659eb36d1793a9aab53d67cc0831045e61db181f78b. 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/TRBBC1900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x655e882702d02c5618067a2339e6ed370dc24699ee1a4bd044ba261df91273c4. 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/TRBBC2200032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb06306222fce27e79d7e597d9fcd00d9c70f1fd31cc4e2dd0ba1a82369a92fcd. 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/TR6791500164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75678fcdb2b5d97bf77ac1b578d133c34375b992aabca32a6031e945fbc43a6. 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/TR6791500172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f59399218d2e3a44f05dae0242c76bb89013c64c17b44d6d2dce493e840164. 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/TR4290700083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82889cad8e60fb4b7284def72df79945a1ed2f8ebb7364483279a173a6f06c31. 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/TR4290700084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b3043fa816821afe242db3e307ab088d55a9007bf56eab87fded180cf8c3b4d. 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/TR4290700085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ce084cf666307a1e930baa08b335b226b0157591d4c2456a7f9ea56e2d55bc. 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/TR4290700086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05763ad96e4525e3c3feb191183a5e61ee4111cf4c97808b9113e069c31b995f. 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/TR4290700087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283975da14cfbfb25748ede6f9a585d0430151bc0e7cb3903bd8d28b49881513. 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/TR4290700090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2afa914db480db1dc7ea2132e71baf7e932c15c5553d5185bb9f6767e3cf2dd0. 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/TR4290700091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac00a0859b3db0c155a31a05ff48c545243e8e741f09b01360f8fb4fe09fe2c. 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/TR4290700092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17141498b097b7b26bcdb299fe87d6208106c7787f61e6ad3deb91016dfb533b. 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/TR4290700093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c9de4d41233247fa17ee786c12965fac3dcadf3350e69cbfd7128e8192788b1. 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/TR4290700094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0237e13a2a52ae4abb1d67b8153f1a2e32808fbd6ed03c86b31dc7d3b5b6684. 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/TR4290700097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdefe3615cf1764f33f4883ef97fa1690cefb89ad13ceea3be56dd4c526df1613. 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/TR4290700098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x333816a64eb4c412843d47a0bf5cf799728eeada7ae0e7daafca90e28e03ec76. 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/IELOI2219560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0f0101c6bd2b92e7535bf6bf6de5ff313d46bfceebb629dbd9fab7567dc88f. 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/IELOI2219564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x717e025410f469c1f7311278a2d0c850a3264e20b84058b3bb21b5839fdf2231. 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/IELOI2219565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5963d8d95aac757f843a4da69b11905f42ead6576c9b0c610a51df4885bbdda7. 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/IELOI2219566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634e4938b4407cbd112c6a3f8d991a97c9e0ad961677f89d180016c44884e4f7. 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/IELOI2205694.