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 0x9f6cb8c9b70c37e4d5e9b5f2040f7c3d480cfcb7a054957cc7957e62aa7b3db8. Chain 2 (Bitcoin): anchored in block 954650 (2026-06-21T04:51:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d984bfd0-4406-4ffc-8fe8-c872783593ca.json and https://artists.proofprofile.net/proofs/artist/d984bfd0-4406-4ffc-8fe8-c872783593ca.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 0x46ccaa3d232238c4e6f45a35aa9ae5dd5fb471d9b7baec2e0ef6d1153aa00f91. 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/CBAHX2100101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299276ee59cd30448b66386ef969fb3a7f11523a7cf12c42d8752672ef44a2d8. 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/CBAHX2100102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eed83a6a08b0f35384fcdf9205a4c0e36600eb1a3075bca93b67b421521b9ef. 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/CBAHX2100103.
Même les loups versent des larmes de joie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21dbefa736bbb28fbbb9003a8d96fe63b25a2d272ae9348602908ed5903b0bd0. 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/CBAHX2100104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19014b572c9973c9026bb36ffbd04abb4a9b485d6931f1141f83bb769fbebfb6. 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/CBAHX2100106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d20d00ca267fd5bde3afa522857411b519e0e0260481be4eed4cb998f410af. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CARB72121810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b35297b7815da73c8352c1f517fce4e52ab6276b8fa6d556cbe7c7e51c1596. 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/CBAHX2100108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a5474bf99c8935062426680f7cd983c5c0e542e69bf120866d6f35d815f10f. 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/CBAHX2100109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa499d86a7694fc8481773c1176a950b577605ececda4d7791331d81a2952804a. 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/CBAHX2100110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206fe1a701465a9e8475c18c7b0e74da27a2aa998277cb45a3938fa370323f44. 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/CBAHX2100111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44414822b46e142bf2ecaf8188425053909a5f47d7e82f6dedc2f51d3d623343. 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/CBAHX2100112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb52bc577aa5e8ac5b3027cb933664799638168c872de09f594bb39a4669fc3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CBAHX2100113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2597ba910394e3b339fdeeed962c36c6d12163022b6278703c52fee6d7b19497. 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/CA50N2030004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb953d016a67c9f5cf3a6d17f13c0d2926c35d7f207d4d3cdf94dd33e3fa5342d. 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/CA50N1922001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bdd247df96fabfc246c13d7131a67ad14387934c699e44fcf9b0bf64bcf5aa3. 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/CA50N2030010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c7e08c4feb627ef13e6086d438c56f6c614cdcc0816182d986fc6ad83188ce. 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/CA0RZ2300082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ffeaff0956d9b47bdea4f54db9e96003c0d5c84183ae05768ae3fafbcefe922. 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/CA0RZ2300083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52ff54ec9cd0be084e0af7ba5661cf6f2988a729f019078fbed9e8f4b6185690. 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/CA0RZ2300084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f634d0e88fd898537d34baed49d73213d98e7d2dd1365b0aa8be26be94a8ca. 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/CA0RZ2300085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb953d016a67c9f5cf3a6d17f13c0d2926c35d7f207d4d3cdf94dd33e3fa5342d. 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/CA50N1922001.