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 0x81735a74712f08b0d8acc0243b60da12672b8a058abe8cd3e784ca5caac12849. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/13528646-9396-43f3-b68a-2354e9bab510.json and https://artists.proofprofile.net/proofs/artist/13528646-9396-43f3-b68a-2354e9bab510.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 0xaa33c28c3b559ec23038b470b78b2ad349ca473cc3f07cc3b88a6c1c78f393ce. 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/ITH711800142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b10802287ffba231a1c795d6f0d0973f34c81699fa2836529c7a46fb6ab102e. 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/ITH711800144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7898308444a15fa1422bcb851f47362d7be3c3ba2235ec19b786742a047a8618. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:59:54Z), 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/ITH711800146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd70a1aaf47383a00b3fce36c0c27c98923249b938bd97ce1666cfb0df538dcb5. 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/ITH711800147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e30c3dc6042878e85f274d6a0ddca492b18d3699b31a1b842342609fac7b2c. 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/ITH711800151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe461ef3a8b5090c34d8f2cfa40c396da7b41fca8d7e3f5da783bf2018bdac2fb. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/ITH711800145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x747cb55b691c02e57bf40788cc13bf88873e4b4de0cf575a67b424d8a98b309d. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T18:50:51Z), 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/ITH711800149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999468b4124b163727523dda73d66c9ea8a3b1586b60302739ab622ad836d28d. 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/TCAAW1129437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b3f7bb925cde6b26c853722965bb7b2930b76b31d7439e88eaed3f0507d976. 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/TCAAW1129438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8497af200b19d9dfe6907716bdf3dd23f0fc59d13c248b2ef1369350657fc1d. 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/TCAAW1129440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x527e471e7d2c0da476dbd684c2327660357e17d342fe4c4a829f3de95c06ba59. 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/TCAAW1129441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b4135323eea73510e2243938486a61f54c83e6ecbd0080a4ebb9652460970ec. 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/TCAAW1129442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f39a82d0be7fa0c933a4ad06f9509f88cfa9e2f85dc96b55bfa92af9797734b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCAAW1129443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c31695df3999fbc1c3551f2bcc0392d87e779a931f4f99bcff09e76fcb9927. 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/TCAAW1129445.
We Always Think There Is Going to Be More Time...
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39caedd05338d98703d0739c4d5828c67156d5f50fcf0d3fbef721943f9f00c9. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCAAW1129446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0dea9bdd3f88e29a735b4bbe59d7b6b2a17f69d87799808acf90264966258ca. 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/QM99V1901101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee3f71639a150e27fff32a57045c6af6b4deca05e725d8d951d1caf87fd55ded. 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/QM99V1901102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7898308444a15fa1422bcb851f47362d7be3c3ba2235ec19b786742a047a8618. 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/ITH711800146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe901992d4bb36ed023604ed885c3b512f0befe154d221f863f99c7ae690b8f82. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCABG1207069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x972c139da111b995b3db84b637f4ba6075f5bdb844dbbeafcb2d1fd9d04a8b6d. 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/TCABG1207071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe3749d6e1b8248d968099299b951d357ad2effca6e6b55cf51af38a56b2dd5. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCABG1207073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22fe52dcc0ab8639615352b56b8132c344b8c86a8f4ac75fb4497b658680803d. 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/TCABG1207074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab2f916fd7cfdb957e48610846c8c58986fcaf0ae8f3a762f92dfcd8dd1f58a. 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/TCABG1207075.