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 0xe603daa0e05ec496bd14f2b79f8176720d19c7d00a9d828c3d39081ed09106da. 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/ac3982b5-0fb9-4284-b0d8-97c1bb2e6afc.json and https://artists.proofprofile.net/proofs/artist/ac3982b5-0fb9-4284-b0d8-97c1bb2e6afc.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 0x515cdd2ad5bf98002c0120552ba4840f9eede92401be88f98ae5833e5dbf00e0. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T16:03:19Z), 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/TCABD1220630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f8370c8890e7078f1e99bc1ad039acd79379a69408096f1c21747a651a0a23. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TCABD1221520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3359de4e968b4fd21e8e49abcb097801f8889458ebbb70e5df0c8838f72ff483. 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/TCABD1221522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c69649e118a6842da5c89fe06472d2c463f13b8e7a24dc42ed9f78d0b405257. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:48:12Z), 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/TCABD1221523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfcd6ac2f821d7f97ca6e10a91328b7a0e1365c3992d3e8d7f83ebd5dcf73bad. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TCABT1484394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ceb65a96cb82dd2e7d43fe67711a1947d084fc82200360258144f2ec4cf168. 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/TCABT1484396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b8ec54c79fa8dae379c1a74377b9a8afe9a24a6d2c0488785e25e7e2fc428c. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCABT1484397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fefe8faa56314c8a7c2f1dfa5195d7a186c80db3ad8780a4e203d47e9aab86e. 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/TCABT1484398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd44a98c231828dd85361cfe306a6276218f49e4f145df4ed5a81b0ea222d55e5. 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/TCABT1484400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f1870487bbd2c673ff4111ea38c423758b0405cd2cf8e987ac71df6a172713. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/TCABT1484402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a823f0a342e6721c08a2e039ac7599edb352eae11ed71aa72266b59d2d97ea. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:12:00Z), 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/TCACA1446381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79fcaec39870ef55e76b68671771f99d95fd464bd96168564ed1ebd8ec819ba. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:57:27Z), 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/TCACG1507555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307848f6fbb43614484be7b55817175e7f71ec6622bf30f8d7cc6116d87bfa93. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:05:11Z), 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/TCACG1507564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70207fae687b3a779a37cee8f6b6007e42f800f4048ac57ca205abcfb47cd2bb. 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/TCACW1758465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa7451102c696f0839b19a7506948eee15c44368d977903906a8180dc6307dc5. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/TCACW1775360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb62f7d8aa351ccf9fa0ebadda3eb66197edd483649c0b19d45f4bc055b49141e. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/TCACW1775361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee566a763a505c2522a918b6ebcab7177a2c1dd1f22803763748a119d2488ec6. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/TCACW1775377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8efae50a28e2686cae63d10713366c82276069043d9c84b7057c3c754c2cf8f8. 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/TCACW1775365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe66d645288e069075667fa731ddb4915c83c7a56e810312fea94c8014e31f646. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/TCACW1775369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b9666a616df4c372500e55640fd726bbc4ae8cf9ed3af9d302796f71401c67. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/TCACW1775371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa407595538ed58d6a3fa77a59be7af3ff1fceb88e5cc8a49fb2dff561c6231. 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/TCACW1775378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce494490607355cf8b0f1922fdd70fca3c2da3e4b71299142cef822d3491a24. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/TCADQ1879915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53340f69a15e7c2ae8e9e20b7c5001fabb99c7be822112dc0abad59f7d403342. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T00:33:54Z), 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/TCADQ1879939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd4bb602c11cfeb23e0b3b6f5dca9311ca02d0a078711dad3b6e721faf76ee9. 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/TCADQ1879943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf785360ca644b7d952907f484115ba472ec1412e5f7f138468fecf4f6b5b9aa. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/TCAER2042050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e2fa1a8b3c2f348ffa9eb67974969314d8fb13d86b8f2b8f87a28649687001. 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/TCAGD2274496.