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 0xec379ec3f97aa6d67909c1c5e7b6038ad9d44c99a9d877b8e1e5728515ef830b. 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/74d6010d-70d5-4551-b8ab-a46cd9e4d70b.json and https://artists.proofprofile.net/proofs/artist/74d6010d-70d5-4551-b8ab-a46cd9e4d70b.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 0x13e5944bd1998dc124d87d40c56052e7895c35bb0e4066891d913ff6221b36c4. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/SEYOK2318687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e1bce1c51a8d47888178d170b813fa53904de13473f0310ff62f3072cca14f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SEYOK2318688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374dec125e1eac2e35189e034c942c05e3fc920caf8f6252c79db26e4779f0ba. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/SEYOK2318689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf736d5d17efc08164c90dc7876982dfd71d87105375b17f40c9c8658e40bc238. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/SEYOK2318690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8cffd97c866087573bad97797b25cfb5e6cd5f686f62bf4d6682def6ee8376. 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/SEYOK2318691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb027478dccb399bd2430dd43d3f821426bc20b567f6a687be955d1588098256. 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/SEYOK2318692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d89f467e6db42d935857ce8033dfe5c610575f802481b68c571c9d566aecb05. 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/SEYOK2318693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814f6635f379436ffc20c4d3d26f88b09b93743b25abd4add30c9d525f9bd8ac. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/SEYOK2318694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd62b00687c6bd2d4936e68916cf8ba7c1424caac3bc969d62f021637039a5b24. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/SEYOK2318695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958ca4badeb65353021a91ac9f2ec9a96fd64cc6ac5a4c48d3a80c6b7ebfd293. 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/SEYOK2318696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ae38f80d8f82d72dd3abcf9612cc8cf3099f39730eebff2e00d6e1cbb0c17d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SEYOK2318699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85feef5e4b075d840b35b03398d57a4aaa05ba485fc5be01912370d66c1a2921. 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/SEYOK2318702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34725810d2dd1f7831287659bc78a233bd94f27963299fe59b2bdffaf921f6d6. 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/SEYOK2318703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a312d1f32040038044333ce7b4ef237362be948ea97b74a6dc8b7123d00a88. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/SEYOK2318704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db38e5c4ccc428865419b28732999f87daa66e359550e5c9d1d60e3391fa5b2. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/SEYOK2318705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d5787cb67b2ab13b976f5a1189a583fbb8e3c53c6c588a93dfa3d0ad5404981. 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/SEYOK2321704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29dbc46378a8bdf654e23480350fe09ac09ad0e3a23424fb71aa0a5627cff8ab. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/SEYOK2321705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe007ba007be7ecf859963498a2fef118668bec5e400b0b3efb96852d2b888a. 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/SEYOK2321706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd709466aa58658887d190c2f8617f5ae6098aba221c5f2f70ea4ebebd974513. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SEYOK2321707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835bd68e59e760ab2578b04a2493317bd1fc1f1506598d855b44de11e66320c1. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:00:39Z), 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/SEYOK2321708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c0727dd1caf35792321fc0c985fdf53ba4bf5a9d2529414b40c49e3eac1dff. 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/SEYOK2321709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5491aca4b66099013dc139f5e7d68d6d5236129d963bcfc6c266b3abcc8851d6. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:41:14Z), 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/SEYOK2321710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68651053d8fb202116ceec424ba771532277610b110fe1848deab4ceb31a5bea. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T10:55:36Z), 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/SEYOK2321712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9ddcfc33d88f28f343cb0bfd34958ebdaf1ecceceee953fd44573abcd17ebd. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/SEYOK2321713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a1c48d2b02dc77ab904c5c3cced985dd40092c010d75c1be66ffe59c23dc0a. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/SEYOK2321714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43bf23ea5ae3deb0121345a565fdd9f5adb7c2218936708f8d1ab09eaf7209b. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/SEYOK2321717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14509b9199e6f95c50b3cbcf96bc9a2c1e283f296b66c61ba5cbdfcd29704011. 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/SEYOK2321718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cac41e67ad658131538beb8011d74f9717012c3387c65dcbfcc9da87c9d039d. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:46:09Z), 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/SEYOK2321719.
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