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 0xc991226bfb87e5ad0b6b62f63470c42aff7e258f59f98ef2fb24d018f384ac26. 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/ba031a32-9987-4e67-b3ff-25e2cba7ed5b.json and https://artists.proofprofile.net/proofs/artist/ba031a32-9987-4e67-b3ff-25e2cba7ed5b.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 0x6175aa818a6a55fc3e16a4417ea439dbc8d008752b4fa23a57e62cbe8e309c61. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCADU1887934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b17ca1b6b8cf27efdf709ebdf4912e71256a0339e1d58bcb23d7aa2657c2c0. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/TCADU1887976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75efaf208fc9e9a97e7a11767809b59ec78b7422298f1003d9a6fa92b5bb63a5. 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/TCADU1887983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba2ca664198711ecf1d45ba85bd0c60492c7ca2acbf62993587df9bdf49bb20. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USDY41923252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4473cebe8fea8244bd5a40effa7b3d0ee9cb0c2e1e2aef2738e9adbf1becfb71. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/RUA1D2000144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8dfb4ea838dd1065be323dfb3088d55bc4f585e2b68778559a3a2424c9d318b. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FRX282007856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2893c9437dfa865009ced3d6934c06b004302a0d9b37b3992f48651aeb93f46a. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/RUA1D2064328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc94dcea6d27af7985301bdd8672060b70e17de1b7a6941fd0ed5d8e988db211. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/RUA1D2064330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f26d8a9e22694534a0fe7990d719382ae64079e2c29abb35f53175ed0cb7ab. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/RUA1D2064332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aef6389b3a3aeaf49682b51f90d172ebe801cf70c4ef276c54710611d71481f. 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/RUA1D2007359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160fa047bfcd68fec2fafa95a26a11cb1246913096cad4aa83c675d942578fb1. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:50:07Z), 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/RUA1D2064335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161a30e73e599b22cd4f3deeaf926ae3492e3de48fd04d5a435755cd03700830. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/RUA1D2142409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c6c3e213789d7ca9b4f26a0bc07a797f854d64877b168d0643d93c17c861d4. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/RUA1D2152006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b9f2fb75f1359d3cd7fbb56a326d2ed85119d0dd2edf16c122146a36033aca. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/RUA1D2152744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34baf8bcef20b8f90728406a978f8265d704b081f21291ac5c8cf2eab03363b2. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/RUA1D2152747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb724651bf1952a7ff85382a4ed4c92b5d6550200e84417ecb84a1d9794b30b94. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:42:18Z), 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/RUA1D2152749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff1e0b6bed578c8663c11f06238f4c572a164d84600db0b74f5f0698c93d6a0. 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/RUA1D2152751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bec0d77c4c4784446ea370cfdcde28401182f2998d7d75f890ef1498d4f1ea7. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/RUA1D2152753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd01cb880bfdb465b28bddca59e5e3850eb7b16b5ab77e9ca28cf517b98bb4ae4. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/RUA1D2152755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87547e4379f61bd27496ca9e7c69eb21431ca4edeb69887f440d52af431506ff. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/RUA1D2152757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf60d9f07ef67693415540b0b61818f8b8226ee46854c77710b066249656db162. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:40:02Z), 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/RUA1D2164480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f51f34f13ed699aa9e0d4a110ca53e2e233255e5c3ea0a1a3b8e3b7d8e4afd. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/RUA1D2170387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x941b5060f32926354c70e1453d2db080f5430fa7569c6335eee5e0dd3ed47dce. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/RUA1D2246699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40160ecd2cae42ca23d8ec827fa12282963b7634250b6ebb2ab657c02acc0df4. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/RUA1D2268546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490324154b5dab07ace836c36c63a47278c7a977086bd45f6789950d58e9ed45. 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/RUAGT2209590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe273030c037d5e37112b2c36dd6fb49ebab0881d51e7d04e94c3ac3923a30e9f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZHNB2312600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fdfaa5460eeaaf7496ff4215e6d15c105187748fc28b6273696cb08af812f0d. 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/QZNWT2387745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x945210ecb8920972701bbc0836ec8ca7429664e5532bed1bb8b3fbd3f230a7d4. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:55:52Z), 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/FRX202534919.