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 0xfec716489b30120bc3057941ea89c2ecea903416406c27995eb04a977aec8e82. 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/9ecb9ab0-5be8-4faa-8c81-c8fd4349ee3f.json and https://artists.proofprofile.net/proofs/artist/9ecb9ab0-5be8-4faa-8c81-c8fd4349ee3f.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 0x42c9f31ae633172178d99c24a1804a10a4f7f197a547d9ed175a590829eea042. 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/ITRWL1800177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c1603da5c5e8660a65de33d5bc56a8ef01afece154726d2edcf2bbacb4f266. 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/ITRWL1900080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94372b7731a0a1c024e2a44cfbcd995968d731a8406b81cd980a44a2581d8db. 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/ITRWL2000095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd18477022f3103ff1080fefe0b5f48fbcda47f8e47004599c31e4e4f2ea5d8a9. 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/ITRWL2000096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa067ad412d4d8dd946d1ee898749be2342efcbd9528a248aa7a8882594549d30. 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/ITRWL2000100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x113d47796c0afe1c044c02b3f0246374cc8c362e107419c17a2801f321d4ec7a. 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/ITRWL2000093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa0645bfce2a15b63b067a08ad5e6de2630814aaa07d0dbcbb628aa3cf76d018. 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/ITRWL1900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a05f188051e478b1e2e0637e02678a4b9d359b2fde110474cdc5fe0c48bffa. 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/ITRWL1900038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a63e388b46ead0ff208a82de6b1c4956081f52336aff257a80ae35384eafdb1. 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/ITRWL1900039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07b6df02c2a588fb17968caa54c099707e90cc1746559a68b508ffa6c0b3f9d. 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/ITRWL1900040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa077c31cff26e05ee4a83b9b5431c53fe3764430613d22544062c0e9fa1edfc1. 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/ITRWL1900041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd49e24c358b1370cc9e399f96a97ec07c8338e2889be2cc97df8be543e00a5. 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/ITRWL1900042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30eb95285259de7e6a04378e9999cc2ea1c943a9c25157cb4c3336c1be98fe3. 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/ITRWL1900043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77cd72a5ed12dfd78a11e8aeab22939455e9cfdb2dc776139d8d3cd28fde75ec. 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/ITRWL1900076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c5e38389bf249b30bc5efdc5628a2331e56a0adfe61f8eeab6caab22f90f873. 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/ITRWL1900077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcffd955cdfaa7cdb8e0a5d812556d34c231618ffde0a3658ae66381a9a1bb317. 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/ITRWL1900078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d46e8a16e1ae472f106b4e852bd56beeab2ad16f42b949095a73f6f902d0511. 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/ITRWL1900079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa0645bfce2a15b63b067a08ad5e6de2630814aaa07d0dbcbb628aa3cf76d018. 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/ITRWL1900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a05f188051e478b1e2e0637e02678a4b9d359b2fde110474cdc5fe0c48bffa. 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/ITRWL1900038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a63e388b46ead0ff208a82de6b1c4956081f52336aff257a80ae35384eafdb1. 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/ITRWL1900039.