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 0xd82cb016c643a5bed8b739e318a01a277ccf9c1d42e54047515e1d37a44fb298. 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/77e37fa6-333a-42ad-a8e4-ad9e028369d0.json and https://artists.proofprofile.net/proofs/artist/77e37fa6-333a-42ad-a8e4-ad9e028369d0.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 0x9295304f7d4bf1c6fc8674790716c499245106b2fb969ab6b7fe8dbeabfb2540. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BXE851900017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb6550561cd86d632f8f8607c82d17568ef6f1a9ab5a3b6877277955858c162. 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/BXE851900019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39b485a7ea39a32a98d66f6ae1f2abbade27adb39973cbf03e519171d724969e. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/BXE851900020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cdfab0f466a2a6b877f17e5d1cae3e3453bf85dcaabcf8baefe62128c68a1f5. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:39:31Z), 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/BXE851900021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c98884a43895ef560bc635325f48a61268bc56a784176062929abfdebd77943. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:07:13Z), 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/BXE851900022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc147f6ad8ddc4bf063d531aa63ed9a9d67f0bdd5ae474e4a1dbcdb4db7f18fd4. 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/BXE851900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d9b2c88f03b1335d24d120aff386e4b441644a7dccd901804a4fc563651341. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:53:38Z), 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/BXE851900024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247fc7180e74a6c782acfba030399325784c88b0fb889abc610e6cc6d43bdbc1. 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/BR2TN1000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eba97c66d9e1b63e2d1bdc1d383ee840e82123a62f43aef56c18fb679561666. 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/BR2TN1000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48cb7ca964dc90ece9bd97b03d3dffe8e91cd22cdbdfb713f6c196d6f7f44806. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/BR2TN1000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceae77ebc93afed8fec55ea0411aa07bb3198c3d5d57693ce24fbb9b9e1932bf. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/BRKVN1400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8bdfda430b7c6204b9ab35529c098eae9bb0aabc40e0e030964636f623ec14. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/BRKVN1400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd40053ebe06ff2d1fe309c29bb5e7861350f23ae0b1e397df9f754f80f38ee. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BRKVN1400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c7a616744abe4c9b94f307258ad97280826c6b9814812684cdf3098a0dc4d7. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/BRKVN1400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc50fea8d55c02773909bb8ee174c4d5fb4ed886249b8f0738df6af6f6dde5489. 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/BXE851900031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db948b8390c21e1088aae249edf0161826658daec249dd1d1ada359d4f65684. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BXE852000067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3dbd063f8df5ab5baf678249a80b8d6d43857096b375d5f558d832a10b0dc26. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/BXD432300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02ff6de1e492748d1fb1dd6050478070cf82b54dccfd6f2035bb2b33072ffbb. 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/BXD432300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703cf5d9fe9b93dce5eedec130976d3da6b79d56edcf32c3bfc20029f718ba5c. 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/BXD432300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a60f0bd425fda8904a0b749e5081f1aefe50d1291774c43262c891687f8c8a. 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/BXD432300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc09a7352e53a0b0c448ac52f1bbb28b9e5bb1b5c8e8e615d0639fda50d8853. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/BXD432300009.