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 0x9f5c75e858635cf88d1fe00e99b3457a26a878c0be39d234b954ebdb4616e0fb. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6ac99ce4-3c70-45d6-9602-9aefecebce32.json and https://artists.proofprofile.net/proofs/artist/6ac99ce4-3c70-45d6-9602-9aefecebce32.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 0x687d7c16447207b5886862c9452cbd076c747539ea74193b5815ad642885e5c1. 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/QZTAW2386366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98d362a96f16a82894c35833a3ee53b644de2f76d052a4a65f5c0a6beded848. 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/QZK6M2422563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x483d85ecf942a77934073c65a65a1edd246a313bcb742b3cb5368b1626dde6f1. 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/QZPLS2481631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb2757280655a892f42504303ca4b5eed881cb618d41edbb40c2e3ff39cf95d. 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/QZPLS2481633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ee4608621e099ffc4333aae849198536efb20b5191d0944feefe71de916d5e. 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/QZPLS2481638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2572e9574905025e7e9bba27a50b7a5444ecc8cd7588281c33d844a21e069c06. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZPLS2481640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ecda448eae721718a8bc6fd91147b04f3fb584a73fde713ffdbad355a13646. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZPLS2481641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bfca2ebee1136fbef413c712b5c34129be4c4e6e20130800c809c7849d6ef0c. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZRP42402862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f51844f568e6ef443f14a29cb74892981d54202c0fc27b0eceb363ec708690. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZRP42404040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b62b986b015cee648586e3b72acfc06fbcf72531db6d0aac055c610ac4fbf83. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QZTAU2417928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d02fdb60ed0cdec2e2917bbccc6309bc2501a340024a78436ff4b4b72e50ef6. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZTAZ2488367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d877be0c7a4ce59db6637b9e0e7659a4f2a1653f4960bb1072dad8f26ca079. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZTAZ2488371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a087158edc2cb9003fe3aec2e2af7296f06597ad90c58684ff873bf230c7fe. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:35:49Z), 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/QZTB22413213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09f1e3cdb76c1812ac73e26d63decd4c2711f0c0b424187b97d3f95142c19b7. 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/QZTB22409900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7803523e508c259bb20fbdd4462ed1d280dc247b1387cca0fe0690eb66575d32. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZTB42476208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc323ba1b4e418ccc73d0e7ccab765ef4219e33d50515a92b2f138658e9c1b1. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZWFU2400406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7771d18fc96c9ed60c7f12ac1dfbd272b9426fea2205997d6c70f86b64494595. 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/QZW9L2490779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d44fc7936422dd9725aa847bdc502dfd415e0d7904ab605e9a3710aaee6c46. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZES82512865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7955b05ae1f2cd408b93ee1fa767763946279f36a43decd04f575fb275a2b61. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:57:43Z), 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/QZES82512866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb116169ce2dfb666e2999bc1b9a4be6efeaee90ffff8b5f35f28b3b31590ff. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZES82512867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e96e947d3e6c77339cb1a0b69d4bd0c3085b256d607494bf4335554639d6bb. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:35:04Z), 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/QZES82512868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea58dcc3771dea67ed6d39416bc2f8982d7d56f374d675980d8daa50d91a545. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZES82512869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x191cec3faf5f97f2d6f4f11960046e8e839302a47767289b454d0624bf0ef7af. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T02:04:49Z), 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/QZES82512870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64481f870922094d0c2440c019fca51808c30d8abb4f6f4465ada22dc65126e1. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZES82512871.