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 0xed3e711daa036da65ae7125deb257ad14c22efc15ac37d326c03ea49e434d629. 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/a4f43484-6613-4701-9dc3-f11a8bf89c72.json and https://artists.proofprofile.net/proofs/artist/a4f43484-6613-4701-9dc3-f11a8bf89c72.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 0xde8ed709d63dd9cf5b1399078944838367494762eb49ea1dbf0a17cc5d375aa5. 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/ES71G2151837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe8ac9935e78b6d832a14c3a06b971ac03d2f937f99578589862b09103521b6. 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/ES71G2151839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbbaeda67d5a7f073711c217c5c21538064be43d41b6e5e2a0c3a3102ad0666c. 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/ES71G2151843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38c26ab608c888e2dea4e6d4d77674ff6a74a276e85ebcb2632339ecb1e43c4e. 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/ES71G2151844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d17c80e0789b6a06a00abbcbce98613bf2186740a025c82c0260f4a8910606. 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/ES71G2151847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea93cec029bbc2b7e3f67a3b0eadb512eac58df36cb9adaefebb08fd4c6d240. 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/ES71G2151849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eea76004de14b1ec0953e4ac8e2af657f21354e70497654441b062e90621512. 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/PELB81801243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde314d2b5ed06bd4a28f878947f3245f27718886c2cda98dcea40e7c8308f014. 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/PELB81801244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81e5382525c2a5e2239102f4a19f476acc197bae275f7b9a65b802520af7b04. 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/PELB81801245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf506b751eaacbe0de68bc464ef89b4fae163e167769bb471307b634b8c08eb33. 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/PELB81801247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9156152a68d49970711bc20ab55d4e6c8bca00ff5c9976b25646494ba0b3b765. 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/PELB81801248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232e1bf7377e2b74be926359d2319cb421109a420b14a66ccfde2895664319fc. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/PELB81801249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599e32eee044ca8364b39c02c5d6b74b0717d285ada87041f2e26fc05b0c982c. 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/PELB81801250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272eabf79904bfbe87ca6622767d21d5c9648e3b2aed7b8abc983886cfdb991d. 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/PELB81801251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914f2c116806f66e8b3977ee317c2157b46fbc2a8384647a0e65ddc9146ff4d0. 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/PELB81801252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e7fc56b99b5d7c1a29929c2dd0e5cb12d4733cd9243d1f9d00e16ce3e38f0f. 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/PELB81801253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13bf8e8eecd48d47f6aa9b54013ecc0a06f52032ac3ec2aa6e088def32a9a2ef. 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/PELB81801254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b506d2e73227ab392582a98308acf77591ee15fb21933fe733c74cead73929. 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/QM4TW2527108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a926d0917d55631caf0de06ccd6910083ff42630a750aed2edd86aaa035d4d1. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QMDA72474946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d1c647c9ccbc8d2e6f9e8532950e99a42e9ce5a6284c7fd7d897784fd628d4. 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/ES71G2425012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1232a7ca25922e727c8565aac79dcadcfb93800a7591cea50c05e75d3160a93a. 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/ES71G2408247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b24a93d7c6447cd0b0422a0f356152e4d15316868657f30de23a68b5db2f839. 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/ES71G2332627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd1f995d2b690ea3d9e2894a862c6f034983c8739336e3d59ddfeb27a486c1c. 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/ES71G2328020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x622c56eeefb6ae72d1e07489243fe46fd1c7fa532c1773c0b6f9de6c31f12c93. 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/ES71G2319703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dfcd9b1f43838303b25632925639f0f3db533e88c27c7821de1c19b39365788. 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/ES71G2316530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb627a4dbeb804f6f7856195ab209523750d0b511654f58afb57848cf2ea4d30. 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/ES71G2313197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd77d1bd9f68b9db48e9953baf3e858dea5163c21ecbf72d97c1ca99a7c613e7. 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/ES71G2213077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea2e57b5dff71caf308e85bdf9846e13c950d0a4f36a5ecda99858ee6f247c0. 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/QM4TX2230991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07010308867bfd0c097c50551d403db6e168ed80fd56ef767585572775dad303. 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/ES71G2144742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04679eadac58667264731e1a2634b7eefb9cc92a536091f003d3b866b6f265ba. 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/ES71G2129834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda61b53a98a6e40c7130277c647ef92b8a50267062c02dd8bdd46e3f128c2ac. 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/ES71G2113368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbedbc657c323388c7a50d6b22478abcf4f00f4e24dcbbe1a52231666cd1b8e9. 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/ES71G2052577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601fcbb668795caf95379a86086b4e7529f960aaced57c41a779c8a61376ccfb. 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/ES71G2001078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde314d2b5ed06bd4a28f878947f3245f27718886c2cda98dcea40e7c8308f014. 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/PELB81801244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x249d633a4f1b8735423c7650062443212aa145fecfa9af1a3253904e7b11ab63. 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/ES71G1911307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914f2c116806f66e8b3977ee317c2157b46fbc2a8384647a0e65ddc9146ff4d0. 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/PELB81801252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a16800d99e034122f55d78aed6a8d72e41581ac9695f778ab5133a9f907e02b. 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/QZ7362000294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78990581c40747fc593f7d8d0acf7bc9be6ebc975179c547bd06f949a76431bf. 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/ES71G2318373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a92f9194bdccdf5a70927de11866256c0da3ca339ecf26d6b479539b8f0de46. 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/ES71G2333507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb948d7f3cc13c1bb0b0a822ac79928722f0c2354205052b9a2590c07e1bff3a4. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QMFMG2340360.