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 0xf0c4c71407abc9adb93a7d97193a38840cbd17d57250179a664fcf14696ae898. 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/9fa8a919-ac84-4333-9248-c1e380390972.json and https://artists.proofprofile.net/proofs/artist/9fa8a919-ac84-4333-9248-c1e380390972.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 0xba826ab3b86e0d28825ba3aa70858217501db75b8b4a6e1034f3f5f302a54caa. 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/ROGRA2300202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad570c274860f41893ea1376dc0d5c0109f9874cac3abd131929de8e415b612. 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/ROGRA2300122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x972b725703cebe640fde5b985104d351b302c75dad5ad30ae5712a530529a072. 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/QZDA42210496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eadc0af4a56524525d92b7056f592bcb4b1454033fbb4393281f419ceb46abf. 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/ROGRA2202282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66970fa975f423f9c232530229cf8e3d838258c7347590a95d4152af4cccb586. 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/ROGRA2300737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe74a86e0b172208cd9c0bb4bec6cd2a634d23a40a008c3d7dae7885442391905. 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/ROUM72400129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85cac18e8ae41035038879a998428fbe61cb9bc16436b87fb19cc3cb8ed5df50. 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/RO2DY2200278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71aa3918a8f3b741183061dd0429b0e41f39db1b242d2c14a9ce8c19b2143e4. 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/QZNWS2273627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f7e66320b8f4f84c1e9eac60cc1ac4d6186502c3dfbf9fab1c9bbc3a717c05. 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/QZNWZ2048878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32724a2a78e1bbeef0f21c499288231ebc26ac47ae2eee10faf8e393c1f5112c. 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/ROGRS2400308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f977d9e8926b6c9a33816e963173b4ac745b1a7534bcc2e39015eb1f35930bc. 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/ROGRS2300054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd87475fd36e2d507240dbd905f2b545143e4107bf8cc1cb5c1688537ebdd31. 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/ROUM72400162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f38918dfe74aaf08e7a15c65b64b01516d7ea4ce8ac3288a87f9c614540b17. 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/QZWFK2390715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x668aefe72b8a08493d102d006f89f7d403c9596090ec83be99f79ccc8296cd03. 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/ROGRS2400382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c5f89353a844656b1e29a4463d4089ede90520a267824779682aa247ce2030. 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/TCAFU2184122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0081f95f4f5912fe133d2dfa51882c87774fa659e8d9872ea4088db1e7faf7c6. 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/ROUM72500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9894da0b36106a3a9b3a78bdd5cbb8e2505d032e0b0e4ba6b0be6257624e986e. 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/ROUM72500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x488fe5a068cda6f3f878cf87e474aa9b14fcf93723cb12cd302fbd77e1df1179. 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/ROUM72500009.