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 0xee2b9af06ba416dcf42ec93d9904fb753a791c884584beb872817003fb03e29a. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/64039e80-91cd-447e-949b-7a524e2286e1.json and https://artists.proofprofile.net/proofs/artist/64039e80-91cd-447e-949b-7a524e2286e1.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 0x71983db048de1a6cf91997fa37d55ed5de9b497868c6766b40ee5c0d5b66e49f. 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/ES5590600143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d4baeb2436d5a1de8eddf2d0ceef787f5940e7fe49990d61d15ac8ad259a875. 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/ES5590600144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4231a38386d5370a03d72555ce990ae42810a485c9a851f7c62fe19958fc5fe. 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/ES5590600145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd40e0a134f4daffef1aa7f91f7d4b33284444e9c6676bba7109d0749fe543f4e. 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/ES5590600146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d1a28b74ce7191287b6d4ab2da45574ab2c21f47baf56aa614b3bf09773a2b. 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/ES5590600147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa98b7a18fef4b6bf6e072befcf07dd1d3089789d5e7d655e8b2b84c231727b5a. 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/ES5590600149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4277ab15c611dda969c205d0f1db714e98ff7f009a025280fc64f926fe9aaa9. 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/ES5590600150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb5219351cf640a92d9c095371e3ec3cf5902aa7a30e400fb8392b25344c13b0. 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/ES5590600151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8049808f58d355e7de4b994304af3dcc6dce8c18d94de06899a13c095d84073e. 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/ES5590600152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c927a868174ced3b33cd07e714c243c031adbb698a146b7fc48d06e21e0d7cf. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/ES5590600154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e0e74a149ab4dff5046eb44c561805fa47afae37210434c7828e804574c5e6. 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/ES5590600761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c25aad4ef92a19c2915eafd1475deedbe9d86434ec0386f258286221532ec3. 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/ES5590600762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa456b73dbcdd488546ec14898e1bea3792cdef06435f799f44197997e36ecc7f. 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/ES5590600763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ede18a0dfffafa4395071eb5879b69a0935dd8f4b4c802dbab5c0ebe2c1a4a. 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/ES5590600764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab164b21b940933d37cf83102fe24be04b91227a8e6c00d28be2bca7b1588b83. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/ES5590600766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa862421eaee09a3ad596fd901089fa10b08eb90f58344eed1eaed553f2a86f48. 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/ES5590600767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8318dc0f023e6d9a4f1fb108606af0b54b7b81a8aedac48c702866df7c2e3a00. 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/ES5590600768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5dc9ac92332f697e93b9593301cc1497ba9205e0a921b125502b80406645dde. 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/ES5590600769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c0fa2019026d250496359c5fbc8b530d21539cbeb696e056886cbd1b9f3b02e. 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/ES5590600770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa98b7a18fef4b6bf6e072befcf07dd1d3089789d5e7d655e8b2b84c231727b5a. 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/ES5590600149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90562e392f03e398284a197f63857505f726e567948cf98d4fd44c05d610b1e6. 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/ES5590900455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92137460a50d358bcc7ef7a6a78d868b375a3142f177a4ad6ae11f564c45905f. 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/ES5590601135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f66edbc15a6feec6da3d491fa379c3f406746c96c887393cfc597c48a942de2. 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/ES5590601180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6372bcad8de19309c4940c217196e2ae95e4f0f11cb4faed008ea79ca37b00e. 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/ES5590900456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246f54e19408c31afaa4a09443dc628ae7242840849ab4374908f4bef46eb779. 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/ES5590601247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30810f70eb66864d05a4c6866380e9ddd28fa162f0c0b0fe417cb85740229e04. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/ES5590900467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb52bbaf3613c9db5bf76bd24a0b0a248622c205dccecdf7b299c9271fee81ecb. 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/ES5590601150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa60fc8d4154b0e690e90ca12685d05c9840b0f5238d38a008205136bbae00c8f. 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/ES5590601165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e0e74a149ab4dff5046eb44c561805fa47afae37210434c7828e804574c5e6. 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/ES5590600761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x688acfb25f1f7aec5b400aa8ad1fd2ca58d328cb00b61030b0b2fb1f07ea529b. 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/ES5590600174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01cac004aeb716b25fa150c5d84a7917b4dce407d271e56c408bec9e8fb24bd9. 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/ES5590600157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92137460a50d358bcc7ef7a6a78d868b375a3142f177a4ad6ae11f564c45905f. 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/ES5590601135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e6491ac5531d417f35ed0d5f82be9a0011730094dddbf34d20ba95ad0b4674. 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/ES5590601185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5515e75e39113e5fac4422d4deb0bd5df32a5a1263933eb796c7255e5687dd7b. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ES5590600795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09663bda7ffeb5f75e6b20fe262d45187d0791ef3bb198791e68d88002b80b6. 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/ES5590900282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4399695a1f7cbd77f8a5d058a515d04ead4c1e738c2290293fcee16c6a215ae. 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/ES5590601192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0199b26ef4ab17616696b02c896b5f7c025b20cc5e85982596d78663f28c05b5. 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/ES5590601201.