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 0xe3ad997ae6a1dca8c5abdc6b991f65226f0c93e6d1f56fabaa58d73eacf41629. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/df6b6111-7b0f-494c-8e8e-b8b427029b71.json and https://artists.proofprofile.net/proofs/artist/df6b6111-7b0f-494c-8e8e-b8b427029b71.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
I Don't Wanna Know Christmas Without You
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 0x27c7e0c31849e353da779bd2192eea32bd55fd67585665a4cee5076240d650e9. 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/GBKPL2160925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x832c80ecb4601e0693439610097d17d84639bfed7e0be5e7dd4d95670968ee7c. 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/GBKPL2098078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959f762a4e16c2427a9d8f0b67886d9d94e920080483f26e9bd3704663e95c52. 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/GBKPL2163692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee974ceed361776780921a659a13539ad6b060f33a379e2863e2b65f788a4360. 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/GBKPL2022877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6aa7cb7f1b2c915c85ede181e9c86eb11d2fd7199b3f3e57e1fd4342d50e78e. 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/GBKPL2012663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3940f3cc1270b2f7a7e55f3e723eb2a2b3485dd8d59d3d423c2d4efc5c476b18. 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/GBKPL2163691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8e51dab489cbcb59521291bd8b82a931e41c131b6cd9bddcf2958c501306d6. 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/USWB12303026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7235c8dab05b9c5c7656c77502c67eb78eb20b5ee79283aafc291b379f111960. 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/GBKPL1971803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c0e1640fca07b274ede760650f14e796a68309d1cb3dc72bfcf043cfe051a6. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:41:50Z), 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/USWB12302782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd2618facdffcd2f069b42cfd9a722860eae3f2f3afa077599a356ae39830a3. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/USWB12302781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885918dfda31ec81268701b77a3bd3a4e7e8564a5139749d4858a9563e764f65. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:51:31Z), 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/USWB12302773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa017c48772d728b14d94161db9596f11e6e6e7b0603c6eb0eef562042ff8b36. 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/USWB12302774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b3269865eaa20d8d1ada447cf6694b6b7a69109cd7f89e2ac021adf928886b5. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/USWB12302775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dbb2946f920b829b0e83468fdf5257a699ea4947c8ebfa649c05c070846ea99. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:05:22Z), 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/USWB12302776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f211151ee9210109bfb0dd8a51fce56edeaf48894e7d014f9afb4edf3b23077. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USWB12302780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ae6e9b914db50599c525df5468deaa83da1a1b5836b776d29ec40fb317b540. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:40:18Z), 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/USWB12302783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b4d9462382813b3eeeffaf1e726b32885992ae3e1a2dd806fab643e74385c4. 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/USWB12302784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30195fc513b2dd1aee02f4207cecb7946c5b9536c1a038353cf0cfdc3de6e3b3. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T11:21:12Z), 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/USWB12401333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c71b3953be20b6c044704ebcc5b04d1be4ad3b660bfe608ebfe671088e1ae92. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/USWB12403085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f211151ee9210109bfb0dd8a51fce56edeaf48894e7d014f9afb4edf3b23077. 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/USWB12302780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9e516902f4bbe2e7c68641431e09004eedb110b9a91a7923aa0dcc48b21129. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/USWB12404258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c71b3953be20b6c044704ebcc5b04d1be4ad3b660bfe608ebfe671088e1ae92. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/USWB12403085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb775b8063b13d22fc4b7391b00b4141c4b3f62a06be711fbc4481fbcbe506de. 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/QZHNA1960304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f9adff1b6d4cd920dfe31a2709adf60fcdb5efd375815cb52bafed7a2b6232. 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/QZK6M1919714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05418ce22601f14e9f7d47822083c4fdf6322dc2d08831fab8c7ad24d66b1656. 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/QZDA51882977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5a3e956602bb2c34623a50e90464ed9098d62898d53a69a27e04962271d7df. 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/UST8K1893982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ca8de4c2d185dd8457b46b014450d290d2e797eb19b7488ac52f3a186a0efb. 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/QZDA81808225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b517373ebb9dec3183a4e543f01949351fb5a3e61225594faf2bb5db975982. 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/QZBRF1888189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe540db840549d72a5076e9b9eca9411594d69cb26bf53b244f88fe15b0272b76. 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/QZHN91935601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d272e611fd2af4c271779a818b9ef53d1801416d4895700ec0c7f174862900. 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/QZES71874690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db9418a1367be27f848f15dcad398282bde505650028f28d3e5bcb7eeabcd26. 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/QZGWX2044309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac87d1d86f9b84f14c950503f3ed2e5b76dcf6f51da0e315e7d7a42c7e2726b9. Chain 2 (Bitcoin): anchored in block 959138 (2026-07-22T14:10:55Z), 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/QZGWX2245719.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d095c05568dc647b5ef0d2b8857897105d4cfd3872ef7410ce277a80e062d1a. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/QZPJ32112026.