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 0xd5b240208d33965b52309dd9a6cd48435117cf019380dcbc43c6488029f761c4. Chain 2 (Bitcoin): anchored in block 953636 (2026-06-14T13:03:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3756109d-1ed1-403a-a4e7-feab17af6309.json and https://artists.proofprofile.net/proofs/artist/3756109d-1ed1-403a-a4e7-feab17af6309.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 0x87988267bcb378eeb9c11cb6ea93a8f8f53c82a6908ebab2695e708e51fa022b. 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/NOAMM0400442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d47ed5b8b3de7b63480c8a10e3cbb0559819b6b192dcec196e8cb4d71d5c20. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/SEBFO7801010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bdfbe508debb00f61b114c62072cb39b876061dda9cca06317031047000a232. 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/NOUM71102166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfdecc92f1793b5b9f814c08f8d0b9d90bd003a94e3ceda2922d2bd70ef570f1. 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/NOUM70500543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa8031aa4e95531b2bd493b73f7527571a70059be950fe0fcb254fb9a2d292f. 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/NOUM70702719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd9468ae8bafff749f046caf2f779047fce1131e6a4210b4220f04cc4b1a63b. 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/NOAMM0400434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee2a977bc0ec1abacd011904ed50949e20f59417ef8c2aa098da155c1e7d371. 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/NOUM70702079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfaa2093f0a06ce0a407cdfdc1dbb4cff781c7a450b7ca37975cd5a1415bd39a. 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/NOUM71102154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf132f789de579f92c1afb93f79bbaa2e211b400032a9736a1e318ce249b80c06. 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/NOAMM0400095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6105399a557c33e7836a4a37114e56fc3faff98fdb89becf6d4d0ed2f3aedcdd. 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/NOUM71102155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957cffb914597c96b39f53ac7cd9a1f5447e27b7d0262f8aa7f3ceb0f3aadc7c. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/NOUM71102169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f1e331f6aef9768b49068204249a3efd530be6c0afb65aa448ff0ce1d64dd9. 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/NOUM71102156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61bc097ceb0d4c614e5d51f581aa5f1f6aef4bb3818ed78c1a373f0d38521857. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/NOUM71102157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a24ce92f84b7942c1da97904484de4e9338bb6296c825fbe872bde01e343c80. 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/NOAMM0300743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d91b1dc89a58eaa09adb409cdbcbd0957c669a80040c7645a0886a5ea3a5b37. 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/SEBFO7504050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05564be75e81aa2ff2ded66dc08addb9335e25b66b0c9a3e57abc9b9ac053118. 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/NOAMM0400268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aee28110ae5af974fe1782af128a771894b52867659c7a80fcee24bcc27b195. 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/NOAAM0012020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6242bf6b42b27cefc3892cb9fcceab8fae58446c50e59ae3af2159489387e790. 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/NOACF9306230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60b05989607d1c1eb3108a10737991e9da098437e3f27b1e67b1884cca6ec7a. 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/NOUM70500290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e37032ed33781c139bf1a84cb51e39afba382c32c6e6cdf9486c58ba5536ef. 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/NOUM71100649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290afaf782ea5461bffba5eb71384fa1cc282f6befc7d9359a37a59e59a248cf. 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/NOAMM0400436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d3ff54e733c8d6ae18f49ac531589d8ed7930f6759c37d8a603e0e5f880f8b. 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/NOUM71100636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30403dbcb367736e65caefdcd68c43bdbdd154afe18ce120b464f555f633958. 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/NOUM71100639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa8c2a90d878aa6b6740db344fde5a147f1403a4a2e65e6e201845ffe375919. 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/NOUM71100641.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00c6b2370f6df9a13ac42f23669d6ec114a706ffc8bb04750f69b590aedd45f. 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/NOUM71100642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3efa95a272e3c5a74191fb2bcafa4a01387cb84c3d3a5d11a6100c2cf1073c. 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/NOUM71100643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e096fcabaab528b65c80737e8257c95fd0509c4353b99102009e277a9b704e6. 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/NOUM71100644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73a03628dcceb975e4b95b98865c2cff091dcb7b405b296b9640983ecca0d23. 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/NOUM71100647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x018251e6e17a1fff0d47fefe7379a616159202248f7badd0093882cc6b1be7a1. 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/NOUM71100648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa51513654c4cf0e8d082c39ac34586f3ba2cf39f2ee3a33c2dbba4bf87d5c20a. 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/NOUM71100650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa275ed21489da11a47f6235cd60a0a7746554043c576b2473e4e07a187075e29. 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/NOUM71201205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa233526d0d8fc855e3f1cdba113f0c61f1bf71aa8859be57940d473664dd6ed8. 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/NOUM71201211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6812b81127ee33646b456514d9168108fc24ba432cf77951543acb1ecaadf3. 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/NOUM71100645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d3ff54e733c8d6ae18f49ac531589d8ed7930f6759c37d8a603e0e5f880f8b. 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/NOUM71100636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ad7f84984c1c6311047897a5447b9c559bc2cbbe4c53c7d4aadc9db675bd3d. 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/NOUM71100640.