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 0x8f856e602d1bcf67fb1f7ebb72f63c2bf5fdc7f02cade9c5d74a40ed4df1677c. 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/df2b4dc5-67df-48d6-a57d-fcb36d875192.json and https://artists.proofprofile.net/proofs/artist/df2b4dc5-67df-48d6-a57d-fcb36d875192.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 0xc7a21914b1e6e19860b032d4a85f554b4d6bf3ff89fd753e80dfaadbd33c9ee9. 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/QZSYP2319372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de8e0283137d646c7719856160a65052c71149999c095e0f1b2910f87e5e902. 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/QZSYP2361222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x397876731e36d0a89281f78d51ad2df373090c649d0d1f390e4b8cd9b5f01294. 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/QZSYP2336290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa8e6fb7c8e814c03895ebdb99082f21dcf5eb6d7dcf5607cbd80148114be2e5. 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/QZSYP2354588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fab890c1f416beae4a1541cdcf73ed10874e94439f40c837535ffcd9a3d658e. 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/QZSYP2376791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22f11d29a2435c91e68f472e3f1d56337ffe0af6d47fd012645e848945526f3. 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/QZSYP2372655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe63e8a2599185cb5b174849358a41a9f983ec841c6b760ab0fe4578a280eb136. 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/QZSYP2331474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28ee5a4b9f0c0de4367a37a864f186e71dfd01549c832c94d0aa8c8c92a31c0. 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/QZSYP2390671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fe4a08eae4405a9d940407f4cbdfe0bae5ca903640672f588d9175cbee78584. 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/QZSYP2395803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ecb6be23e45901d75550cd2253e1bb79f7632ef3180e73827d917d85d7050d. 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/QZSYP2313734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63aca6baa243d8e7f1c9562ef540609b55e78c988666aff628af800d5273a063. 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/QZSYP2390589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96de28f5c73f2aac9169f0bf58c091c5b35a36bfcdd814718c06610ccc60c55. 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/QZQAY2438684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa029fefbf6910dd49d856220f47204ec9d072f0d7bc2eceea18f01ad9f8846f4. 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/QZTAZ2390640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82441b32fd26e3af12be8bcb90baa5dac4f0ae840b657c2920768030343f2db1. 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/QZTAT2335426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5168163d6e6fac86e30708dd34192fb8817aa70e42dffa2f724efa7f8869dc14. 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/QZTAT2323423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d4e565553472122e4af1de589a3052304dfa53973b39ce40bea760072be68e. 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/QZK6L2319460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0225791cef3c74b2ef98d26274ce597b09c8df054b9e580920973460fc76b3fc. 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/QZHNA2338920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x282c66bcfdc48d83feca1fac02051f5a71df5a035b6125a323cd5fff5849ba1e. 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/QZHN72338808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1624b0d3d863f6aa19d0b13f639680efa28d6f1bf4bf759604b482072cce5e1. 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/QZES92315519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x353e05c8581c21e12d8dd4dc98614461cca9dacd12fc31843181feb171c1bcc0. 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/QZDA82330315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x217c638b3be498018065d867e2de2549a4472235f3900800926ec7eb41d690c8. 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/QZDA62366556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafffbe0c1a73217e7fa5bc885ec9325a37257f49b0cbf6cc7c15bdc9542a2635. 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/QZDA42353638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4bf67a4230d46f9bb091ac7ca51ee64fa0cc44fd6afec3dbd3c16dfbec89907. 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/QZFZ72324420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885833e757580ece6680f1155b582a11e26f0adc7c0b2725a1fcbb43823bb719. 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/QZFZ42360327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd573952e7d86b45e6eddff3635e7580ffa80ce5d93e6fe14345f3254220b030. 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/QZFZ32315703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e82ac9784dc3d68f47cf7cd1a5da82a5516c26e66e0667c59faf29d67256c7. 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/QZTBA2260613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b720994a031c23c404640684785826d67e94b988f77dd0541cd70eecedb7522. 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/QZTB62250519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb99306353c9f215e761f01f3b47b0d566f715a5997f1a8283c4311510be1ac56. 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/QZTAY2231162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3432ce58a9396b800c0decd9a3910eb83e4833ea0baabdc9e72ae12e072d1af8. 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/QZTAU2249094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b67e6a93747092efee532595e6a184b8ecb08b37c97c4514e45622a21f4400. 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/USWB12200579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d26161b5728e8abf07db76a63d79837c2159913f47eac673e9738009dffad56. 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/USWB12200580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5fcfeb7059179e74385ca33aebe1c063952bd8b389e62a90bb32c0742282081. 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/USWB12105121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c1464600be73f7a6651c29eb256df9835b61c0719eb41923dd9ad320e96ea0. 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/USWB12105120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec11c642b89613139ee0ee9a5c692142a45b9bbc5cb1e5bd7b26babec4b28a6. 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/USWB12100260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ee7c18b5a6971183669e29cb5113cc9e7770427a9e4deef4f2701e309816fd. 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/USWB12200581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a4230bcc6f44f76fe048569f9f249bb537ac521c50b5fd712489c97e09babb8. 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/USWB12104651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c1464600be73f7a6651c29eb256df9835b61c0719eb41923dd9ad320e96ea0. 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/USWB12105120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5fcfeb7059179e74385ca33aebe1c063952bd8b389e62a90bb32c0742282081. 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/USWB12105121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a4230bcc6f44f76fe048569f9f249bb537ac521c50b5fd712489c97e09babb8. 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/USWB12104651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453d86bce23035b1d01811250d29997efa1b6b0382d052c83980d245e6402841. 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/QZES91941799.