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 0xefaee8c2c54eb1c2ecbcb99550fcc383055b234acc6ac7feb21e34302d0a61c2. 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/c895e47a-2074-41d0-ab10-833f9f0ba460.json and https://artists.proofprofile.net/proofs/artist/c895e47a-2074-41d0-ab10-833f9f0ba460.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 0x58ce6ebb6e2b477b5d5f2cd878c363b9d881560ec8c40819deab406d1bb1ebb4. 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/QM24S2204853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b04d541902a8754b1d4e8125cd9a075950c725884172114e20b6b4bb935dc1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM24S2204022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931e092b397c41831ce355b596f4bdaa31423085363c59a9069ae52ecf8dee75. 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/QM24S2202999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971686ea6b5dc2d4038e8612b11059e882072909965648ac3755c2d38b12cf43. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QM24S2204854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c2ae614e57e92afb9d1c9eebbe862015d733af39c6f44f725a52135f6e0b7fe. 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/QM24S2205647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3531b4779ca3b185b0a0f4adb8a951870b40193aa3b2c7478b097e1de5ed047f. Chain 2 (Bitcoin): anchored in block 957198 (2026-07-08T15:54:54Z), 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/QM24S2205646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be9f52899cebbc0c6d24a45e4041cdff99aed2508780f65f40b2f89c83f15be. 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/GBKPL1972769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b918fbb112d0dc389cedaeea3a8696bbd05f3bb992d725216e17ab1e33c3c7a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAEG1914246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae60f2b05d66331b217a252b4a0744895fbcae111487097bcb3c261d77dd6ea9. 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/TCAEH1984046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x269c5f41752693870a815a75b41fc008883a9b376e40b581ffeb7dc7259c3c8c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBKPL1972768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b93fa45c5b9a6968aede19e8a70f1dfd799685a2f3e678ee90abead8bff452. 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/GBKPL1972770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54cba6a79a9ce1c729f6629b5c8a4a923077f6ae080fb45f6f3133351be30f00. 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/TCAEL1936119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f0dccd01c7ff2cff715b5afb0ae382ed7c500f064f366f85b4e544b249d1f2. 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/TCAEJ1939230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ffc084c34c91e75861a52fac28e2706c651ad7add052a1e8debcf0174554b7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM24S2400520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f037ec33c68e9d2ea885c19471887a336b18941861d4ba05965e88723d71cd0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM24S2306097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2a7a5a9656fa72630a309ec96a5060c719b3dada9044ccfcbbd667328bdefe. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM24S2307468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb8e0231ce937b82509d282398d609b6f8c967dca33e627f477ffa09e2173c7. 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/QM24S2400519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2a7a5a9656fa72630a309ec96a5060c719b3dada9044ccfcbbd667328bdefe. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QM24S2307468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f037ec33c68e9d2ea885c19471887a336b18941861d4ba05965e88723d71cd0. 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/QM24S2306097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cedf0d17f8a85598fd46e025acfa188cca4312ab2a2705e76a449bea78ad751. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM24S2301015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab0c6ff712430e2e7c403541a57826086f249701b47c014b4db962d564adb0f. 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/QM24S2302877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe978777e9136f2214269c33c02d9a38a3ed241df8f9beb57d1e462fee1dd6855. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM24S2302876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cedf0d17f8a85598fd46e025acfa188cca4312ab2a2705e76a449bea78ad751. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM24S2301015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7dd6f6d5ae58342ba92c2639bb07427b64ff0457c6fa64d842922d632ddc315. 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/GBKPL2141361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x172072d6d953b09e06d47a1ac675f21ae8507441d9b24257f63be3a073205a44. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/GBKPL2143911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fdc934f5ca0126cf160741ab3c947a814e92c229bc3a344f1975d6515cdffcf. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBKPL2143910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1204268a998484db6adcbbb702ecedf9dbd90527d14c6bd3d7aa4706a9fc55e. 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/GBKPL2036651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af8b4fd6306f4febdab250192a6f7ab2069048a4769eabdf1277049773bd86c. 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/GBKPL2033574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0dfe128ec56ae5b83667ec775c12ed264ffa27f37032b0c4975ed4019224787. 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/GBKPL2020420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0dfe128ec56ae5b83667ec775c12ed264ffa27f37032b0c4975ed4019224787. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBKPL2020420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62150cabbbee008ea35d6fa11e2bf3286b1d4d4b167ae8a58943050b8259e06e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBKPL2006919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a0b987249476f61c6957d3a775ea6ecfc6702d00b9986cc8ab213d02019145. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBKPL2099097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5577c970066f4b57a297e20aec3ba26e8a0d6545f900fc07edf69c700d8a1a9c. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/GBKPL2015794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa68da829d0c69af8ba88bc895191daf69edb7b75968676f9bfb06f29b3dcba1. 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/GBKPL2088151.