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 0x4569d7b2d56803e13c3e58d69942b93a654bb1299310643cb2f86a3443c3ad97. 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/18b19ad0-9ba0-4adb-b294-18009b154605.json and https://artists.proofprofile.net/proofs/artist/18b19ad0-9ba0-4adb-b294-18009b154605.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 0xa71085affd2c6e56bd78d993b5dfea603b23d66e72cbf348bf1fb1f874e5e97d. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USCGH1008777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e95cf5261edef00ef6f4c3fb458627578e3ffb1debdcc1c4f3d0480d521e5d0. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USCGH1008781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d31d7c82495c1c0f9faaa788ec1e32fd9f788e96a5b1a2733f8e881982df98e. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USHM92075768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba44b5745a619979d85c75a79bd3b3a224dcccdd7cebfc5a27007d0eb6a165e7. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USHM92075770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x737967335b348f1a9a1c9dcd329e923646473ebc076803ea787e3accbd4bf33a. 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/USHM92075771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335376a4eddd78f6afd36ac5e80c4e089b50d6ccc9d409612defaee549b5a1ee. 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/USHM92075772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e78c1046c8a5464a9f99c1276f3103cbcba19106564d6f566810779d20d75ad. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:11:06Z), 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/USHM92075775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d84730fda076d765fd5c03b9bb4542ce586b3d0ce417a5dbc72ca08b94a8217. 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/USHM92075776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c254fd9ce33ded44647e7f9e2ebf91bed33a22eed37bdf372b2db4fca4ca57. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USHM92075780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1fdf2cce814077b2b3031a4301e5ae5260758e92b8b11bcd4a0080b019a6ee8. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USHM92075781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd64c035610866a8e249501360a6eba930a5a0c300f460a2ae98a52938c8d88. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:06:24Z), 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/USCGH2291817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4378d36273196cd1634e26d9d6497546c480a347d86b3c5c0e4812d9d39137de. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USCGH2291818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986400e6d8293f4c683ba003ae317ce7a84e9146f847b7cb04a5ce64a1c30971. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USCGH2291820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdce8db4230cc1f72d920f8f891fd64e56d1f55c7f005653de7c56265a629975. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/USCGH2291821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7fb06c6c901936fd93475e65fd6c733ef7c1b1a8a147a79cd79ab6aa6a9d43. 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/USCGH2291822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2701cae8992f5ff60d1c393944e638b978467b93731ee8f5cf4a631140b80db. 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/USCGH2291823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5072920dfecbb63a37bb3d0f40488718a76f7dfc02a3b73add69c4994fe1e6a0. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/USCGH2291824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7802f1ccfe7b7a6e851d68bc7d10d9a983fed96fe2c6cf6972db264db30f1ff. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USCGH2291825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d6152f78c282d4389224a643f4b217e10b8a25cbd2470a1647bd218209ede85. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:08:31Z), 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/USHM22382650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbf4f0b8632c9b7ae62a20cc491adc2328cea9827eed68eed24f1dc41d7f028c. 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/USHM22382651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24bf1d1bc9f9a3d78953851f1985697a4127c441971b0b7786a680f5b16a5113. 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/USHM22382652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe53f5817db19390282a3acc5887cad35b4e7d0483bed85fee8e6442fec9a77f2. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:49:19Z), 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/USHM22382653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794510b9068f4607f67c4e3fcc9692578f47ecb854eb76c573c7a0b3d093765d. 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/USHM22382654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c03ec270810c7d427fd2afbc000eb0f218e5c1aca6509fdadad78e7cb45605. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:29:42Z), 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/USHM22382656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1473f8a477f47309a2ea328fa701be8f1de5e4fa476777fd81e381981faf89. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/USHM22382659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e3d327c3536944bdc1bdf269254717abbaa2787e49ccdd0743872b52acba9d. 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/USHM22382660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x861f8d8fe6509b64f438474b444e9809af2fd9b3d529e835ecb5e39ddc96c937. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/USY242408413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf26304520f29bc4c697e9d325d137510a6adab9abe76b4afa53a0e4833273a5. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USY242408417.