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 0x8ba9a933b10526215133a4925ee0ab3aabf391c718e03618350e0db712991508. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/16fa286d-5a05-4ad0-9333-26e7f21741b0.json and https://artists.proofprofile.net/proofs/artist/16fa286d-5a05-4ad0-9333-26e7f21741b0.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 0x14498242080bd493b92feacc582d0bcf2896313523b6445d6fb5212e2b848313. 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/TCABY1415362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710afa0ab13eb8d619f27e64640298561bf35cf0f23b0b80a5b81a58779bb16b. 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/TCABY1415364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c1170e4cb2a76c6a0505ff221dcd6d6049acce430ade4d556d77bdd6a1ccbac. 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/TCABY1415367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c8d5c5471b12eaf5dbd435c27ea77381c9d61d99b149353788004125dd2584. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TCABY1415371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a12dc967e867a0edae53686296aa18a336d8b96fc7eb78ee7f83deb9a99ea84. 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/TCABY1415375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa94a4cc96e61d12a2471c33919a6bcf2b3f70a546e0ad805ef4de1e8f3fb5a68. 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/TCABY1415388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff27fe858da133e55de1d93695b5086e365e6fc8f35ec53f95ce19c1aec8261e. 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/TCABY1415390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda67e6f62db53194650d9fddf3f1aa78209dfdd7d80a9944a17a01ffe8b111e9. 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/TCABY1415394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03dd1f506a7c88144d01739aa81077f055d8d53525807b6208c727a680e89db6. 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/TCABY1415401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade7974f497d6cda2154365a14dd4cd3847d671662ab109bc70fea9c134151ff. 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/TCAEP2079896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf280903fda35cd159c637e2be8dbc17a08ed95421e813b1c260a307f5ba70087. 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/TCAES2046029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b8208dd5ab4e1fa5cbd3eaae9c510b47a471bc673c2b8adc7755635bb42554. 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/TCAEW2046644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4e8b247462051023b77e458fcf63f48a27e3c8aaef106d08741302b7a897a2. 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/TCAEW2046629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf280903fda35cd159c637e2be8dbc17a08ed95421e813b1c260a307f5ba70087. 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/TCAES2046029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade7974f497d6cda2154365a14dd4cd3847d671662ab109bc70fea9c134151ff. 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/TCAEP2079896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b6fff22278f4e1bd4410715135057e54a611a2a3916f6eab734ed0451790f43. 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/TCAEW2046726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180874c0321baa1a438c82383b3b654cd24a10914b4bb709b43261832222a441. 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/TCAEW2046732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24e3695bc0d8e9958a717cf8acfd45b41259f228150af4def06f8483804f810. 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/TCAEW2046745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d2bdc41d67be3f4bb3192c8e87b367ae19f94bc095f6c438c391d9fe66f45a. 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/TCAEW2046750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x781ac788a0473de6b9803781bbf9580c00450e044c7cfcc9d27211e4de43a140. 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/TCAEW2046755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef212b39e0e07f27c605a22166ae612f6d4e0f5d170ba356d12b5633994e465. 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/TCAEW2046761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e5cc6ac6c62e1cecb658d04693c46b473c5253f5404359a6e4949e08b72a98. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/TCAFN2159441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d038b310b8dd087187df3c6649a83a291098095c3b0e1414386eb38ebaf3b7. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/TCAFO2195779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a2ab8bb156e4c0379583857608721c134ad88127f62c7cf3f91defe33d1d9d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAFO2195798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a16da7798dbbf85684fa24d47ef1a53d48fb3756f628b36c8fc5b28ecb845c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAFM2114439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0fcdb2e34d3d3dc3da31374eb9ff85ff034cc048cc607e36fa80c3807ce0008. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAFO2195866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1a7643678e980ba4029eb4b66e824e25a50f13cf824e64d4bce93dcb4f2f86. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAGF2262430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197e468890e66b06d14be613c8ce6bf27002105ad43289122f9bbc56928d9f19. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAGH2231090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd100fb2edd7cc83fba7a145b3b0e568fbb4bc9db322043091f050448800d2304. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCAGC2247184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff10b6c3b43a0595b2df49656b9cb67c65a2a6a2d08acd3c996753121d9e444. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/TCAGH2237488.