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 0xcf57f8463ac055fa982d31eb36a0637f8754cf369d66d1da81a70a45f2c62ea2. 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/a7508cf4-2ff5-4847-9b76-610c0fe151c2.json and https://artists.proofprofile.net/proofs/artist/a7508cf4-2ff5-4847-9b76-610c0fe151c2.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 0x820429088079a61c3f9a100bbd0f7d646a68aa088cb2f152b28763876e7605d7. 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/QZ2J21507669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee7b6882e0d82369e8e25112e295dc3a835e7e9d924dbdd3a4a4e0c4a35e779. 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/QZ2J21507988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58ef9ee0d582321acb3a7a64ed4e76bb14cd4473fc190449a6449838c0e5b00. 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/QZ2J21507845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc26ddc74c904cc8276099388524cff269b04155b102bf1ccd34b9c60043ede8. 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/QZ2J21507989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5681f24538be8332a701a9c04776540f3e77024624330920265fb8e8067982bb. 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/QZ2J21507990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa37815fffb7663fa8de18b56bed80ff5b5a571ef14e929ac03cdbab6e053c764. 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/QZ2J21507991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc75639dbaff81f9cd05bd4609f25dd08bf3dcc3b184f2dba3a3bf0bc9a9873. 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/QZ2J21507704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc49be489a126e053c68c2267bf39960e66af76789b59ccc7ac0b010bed3961. 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/QZ2J21507992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d4b8c38cdc5761364bd48066b30ade74c56aefe179a76c0cf43d9d0119add9a. 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/QZ2J21507993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1457f571e1e635716d690462db9e693456a01c97b1ecf1739dfa97953914a831. 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/QZ2J21507994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8bff797c921c03e3799c832919b0b8089b722b26ae298f1333b4d5bb8b4d7f2. 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/QZ2J21507995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe89733787aab534d7ce1942b461e668d21df40d6c7c85300e156082e30416ef. 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/QZ2J21507996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b837fc39f8fbe6153b0c22676cf3a62599db54c6da82b9ed29a77b4578e9db. 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/QZ2J21507639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c8768fedca241b9be2ab06d476269cd1e52d845099323444431f191efbe786. 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/COA2N2200170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa346dc7c63a0862a6af18ca0444a71e250f4809886a357bd59f54fd75d024697. 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/COA2N2200171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ae4c3dce659ea03b391137d8f462d11a92e8a09745ccc988f9f418bb81a0a9. 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/COA2N2200172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0baa0a94fa35c7961b929cddc55ec95ffe14e52c78951dcb6c6ec745cc5caaa5. 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/COA2N2200173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6529f8755edd2fef345c0a255104cd19a02750884528acaa79c2da8e1a3c67b2. 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/COA2N2200174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x098db0916829f417628443018ab8ed33fa49cb159c10b1b9d63f16c39cf972ba. 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/COA2N2200175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2280022c1f1d4fb1f879f82ad70e881bc2e1e76856140aa4f6b9e5d5c35ba45f. 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/QZ2J21508172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b99de829c924d22b6d572416462b4f2ab1089a7a2b314c554b5910a42fb1c0. 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/QZ2J21507978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a9668d553a1628ce26e95992f046e0ba7574970b08e325b1a58e47e8306a332. 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/COA2N1900035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7008c4e77a47e6d25cdcf1e86a4bb3b2cdc96a6e8b407e3ff3c6f48e8f7772d. 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/COA2N1900036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab245a239cf02a0e0dda92eac66baff7ffd89c49cab60ee6e22eea6ee8a857ca. 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/COA2N1900037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddbdd06c7930281900c6469cf9f4793cc2cd299f3a95542d069d3ec45b8b72ee. 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/COA2N1900038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd690a7ab45a1d52b9566decc9f973bec8fada2a168f3c4302f8caf1d39b8350. 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/COA2N1900039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247dbe3cc4b1869082712175171851cdb5502484707900e3371be0d07ef10361. 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/COA2N1900040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe99b323f67da7caae87335fc59ac0b2917e2721efbf606df907ba417edc67919. 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/COA2N1900041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf49813cb4b7cb64425163febe15562b0b539a984681e9b7486a4158c2938169e. 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/COA2N1900042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a1ac251c49969949deb60a30e66a691e794cde5a29bd2f4b99299d0a1ca9828. 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/COA2N1900043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403c86b42fd60388565566972e525d23aa5ff0b8d33970633100be02192e969c. 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/COA2N1900044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dbb3777a98ca3b74d8e6b13eff0f29c3feb85a4385381ebab5d551d012d8ef7. 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/COA2N1900045.
Activando la próxima generación (Oración)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58543eed818c8c3d7612db0b7d563cf66b892e8887f7d5b39398aa0ac9a553f6. 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/COA2N1900046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcffb404fcc5fbf4fc26a2c382deb1e30f2a5d63d157ba3d1334e2b1c08bc5a94. 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/QZ2J21504793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18acbd28d3836ae41c569cb3fac17d0952c5a137deda3a6f1be0a3ab316b27ec. 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/QZ2J21504794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb4bd262d4ccafe3881fffbc2960eb7756278e4dd021eb8eb492fde5a04e3b94. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZ2J21504795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe649c554095e76db8da810f5f4c1b3ad1f57d4834329fd968094510935869be4. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/QZ2J21504796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff95097d450adbade62449d882ea46a914af80dfc91de8999d581a86d11adcd. 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/QZ2J21504797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50bb8f9d2266a4978535a90e2f667e9adbef461513f2ec3a30180322b522dc28. 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/QZ2J21504798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e580ca9f873d35e05f3612ea8da13ccd5efb5b2bd2dedc0aa377cd33b4adfd. 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/QZ2J21504799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0401f0ea86655f937824943bec8becde6d10567b55bf04a1c65d07343e73343c. 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/QZ2J21504800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36dfbd3c64255f14740ff451797e059120a372af1be3fab9c43113f2aa0848f4. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/QZ2J21504801.
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 0x14800e08749661cc0ba6ab7ec6423034d458ffee2a2868e56951b91ca016e2a7. 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/QZ2J21504802.