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 0x82805756d528769f867fdeef4a887e54bf8daf022952b5eca53956397bffb66f. Chain 2 (Bitcoin): anchored in block 953743 (2026-06-15T04:52:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a33a0737-bcb9-4ecf-b828-9ba1c23ef093.json and https://artists.proofprofile.net/proofs/artist/a33a0737-bcb9-4ecf-b828-9ba1c23ef093.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 0x7a6bbabf836a6d7d3d4a072ba1be9f575ee33bb395d1123dfcdc625463762a10. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CA5KR2437462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f871330a87a3745ecc81273a99d391b8f7bc48ccd99972a158ebbd2bdc8e093. 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/CA5KR2437463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1daf77238eb0fc88cfb4cf0dc03639a8c025acf0800fffc8061ab380b3c570f. 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/CA5KR2437464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a03a1d3f1b10ff93b2b65d9fd1b950bcb62cc62975eaad27570214f02295e0b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CA5KR2437465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09a63bb4fcc8ae631dfa76fa534b7bd7a060bcd362afe8d0dac6fcbbcbee111. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CA5KR2437466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a62c30558abe50e255f88d28ff0aaae147ac0f2bb986a9e785587e320edd6ac. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CA5KR2437468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee6c0c0fe7366ab9fe0a8fdbcfdaf4856370fd10919f00218886811febfe05b. Chain 2 (Bitcoin): anchored in block 957013 (2026-07-07T08:31:11Z), 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/CA5KR2437469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8ff38fe548f34dcb95892cb8a823c9926e09cace261d954d157e7d074d5dfd. 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/CA5KR2437471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d52d1cefca0b064a812099619bb011acac366a57796e5b333eccc3380264cb. 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/CA5KR2437472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ecab0e5ebe0eeedd42e378e038e8aba4ddd9d8fb8c9e389ab070cd069a5ac2. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CA5KR2437473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2943d2acb7a86e8621d777a67f7121328485a4f4021c26f57d81ae91210ca40. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CA5KR2437474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89fd96751369944af66d4c64c6b7258a3e85f2c4b434cbe019ce19bf27636704. 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/CA5KR2437475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be353b1b92b12ac218b6acf604fcdb7aaf0df435bb880a7eab622e1c37bd7de. 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/CA5KR2437476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc37708562bea2297dc26ed315d622b22d83409038d2c51d9c22dfccdeffa45bd. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/CA5KR2437477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621ff616d8b0f83b6552a381c63b6e54e46671a75f8c073ed56a463259fe13a0. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-21T16:30:13Z), 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/CA5KR2437479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc639a75172e169db75fe9e3318bccac6da5a01ae9cbe5abc6e198ddf9cb28a89. 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/CA5KR2437482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be3a1b235db0448743dcdc033e7ca0303abd061cb9acd76e6838bd84d4fc40d. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/CA5KR2437483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3654de7ebeccd650ce598aba33462c0bf5e0c5ded915d51200c92e93a11a1a9e. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T16:46:58Z), 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/CA5KR2437484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b2c3cc45644f9b789e9c241df45fb733da53bd167dcd513608010508a07a20a. 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/CA5KR2437485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d84169f3dc6d73658b63fc092ff64cb74890383de470f501fbe476ae0031b1. 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/CA5KR2437486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff4d88ce0b16d9e63e84c5f0e448a5ee6da2fd8e960382692c1216a79e9b5ac. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/CA5KR2437487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9904263745d39600239a550d90b4549ccd18dd8f7069bea37220b321db694607. 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/CA5KR2437488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa23b41c0439d74de52384c3e264723232853016a446004d1d36f4b4336953524. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:27:34Z), 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/CA5KR2437490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7648c29cc500a60f3aa75c0ecfd69324b8e389a36192163df3c9ccf82c878a08. 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/CA5KR2437491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc639a75172e169db75fe9e3318bccac6da5a01ae9cbe5abc6e198ddf9cb28a89. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CA5KR2437482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ae49b06a57d580f39089863f1f77f62ad227dcc8e2eecdce89633edcfe9cdb6. 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/QZS632483810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938b9167700c984f8ae50b5c827de6a362abc3d874608131cd29c6093228a0ba. 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/CA5KR2303396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1ab2f8a9c70a840b1e24cf1913807df3ab223c4a933b12e15bf182cfabcee7. 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/USLZJ1947579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2ef0ff2cee04404449202abc67ddd6da054edc7761044d9570334d96fa30e1. 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/USLZJ1947603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a34cc07b7027a523fcdba37d21b8df74166078d68c18083106408f5fe746fad. 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/USLZJ1947606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d27f6da24b853817434aab8957160fb4e4b783576d4323e6a653b5c7541bd84. 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/QZES62346550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a49124dd0a9c2f5373c60e087f893264d6800f9eda299a6a097cb02209d8bd. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZES62346551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4722d278ef30b802c2b142a1527d420c181a9e75a14c230ca33bff5e3c9471f2. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZES62346552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e3dbc1dca4e3f1c7972a9039e87bf966c3d70d9eafcf619eba253a09c79355. 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/QZES62346554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe09d3603351916ed034959e5f42b23567f2076a1d9f56721ba392626ab5bbc31. 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/GBWUL2100566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50147b337e508fda7202e820d39c22c5e40dc6807adc5c3f3e6ec6cd000e9783. 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/GBWUL2100554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062ab7e2a85f6ff96d1901543471597bf5e4fa05b665844ad936033b4236307b. 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/GBWUL2013062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc19792946b9ec149bb56f85d9971ce08015f4a6176c8eee5b1215d0ae49da26. 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/GBWUL2013084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a8577b792fa376c8151b3d2c790c3f9016a84fb2e026a0077dcfb430d83030. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBWUL2013089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc52bb7cf10c90d440557b8948fb45d07bb7c5fdbcd635079abd6d4df0faf63bc. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CA5KR2298339.