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 0x0aecd547b8c81e436abda0e41c3f892b95919de7629a7c5ebb0a8eb83eeb0ff6. 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/75dee483-4f45-4efd-b163-929133c1fee4.json and https://artists.proofprofile.net/proofs/artist/75dee483-4f45-4efd-b163-929133c1fee4.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 0x5b045c9c90e0ee6a602197f319741efb57976045465c7708dd782af5b770061b. 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/USANG2425343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71ae52b0f5d37cd8cee293be7a859666a6846b46dccb92c63f88d25c7a26e8e. 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/NL4WT2400219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae1a268431517c049af1ec666978b673870af41cee4d2cf2abf93ccd6882614. 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/FR9Z62400317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d56f9aeb38aae19ffe07cdff674a59621b6fad72c15e440d297944517472fc5. 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/US3DF2434844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae9270285fd7e37f3d03aed0650ddf560c72defdc67bf91b39d43257b2ef0fd. 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/US3DF2415016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c2fb16c055ebfbc4dab85e4e24f9e3ea83b0b7184e62db8e76fee01e544f88. 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/GXBDT2342770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82baf302f99c94f659cbf5749ddc1d4f1a73e46677f8f93b046636d9acf9c201. 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/QM3DF2262023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45964357cb8f4b4d92e25415feaee86e60e7f148404115ffaa5eee9d372f91bb. 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/QM3DF2278371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef574f7197b14da67745a2ad6b74aca81bb757e1410a3f619b589d8f5ad0313. 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/QM3DF2269885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b0481e9fc9e7742aa8340e02ce6fdca221c9e1c14c8365d56554dcdf06096c. 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/QM3DF2269895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39eb081ac5c48082e55a7084f6abed4ea23a5ee1088cf3fc2d78184292e107cc. 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/FR9Z62300428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8cf4b7d8eafb7a90fc8528eb610d0d0a89b7c08173e76373eba3559d82a96ee. 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/NL4WT2300194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b20aad2d84f8ea20d773606446a6947f230f384727be1d8978d34d4f702a988. 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/QM3DF2244490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed3f0c7acf5d028fd3679e67b5a0478b20a1eb0600f9569327ca8d67705abd0. 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/QM3DF2225903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d490a8b80801822e140aa2ab4631c81a9346692af7b8934c8298d9ad6f2da2a. 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/UKZGC2302374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c331a571e26e3887141bd0a09d5f08ce0295411a5d9c08c70985b3c4dd334f8. 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/QM3DF2205346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c744b47fa6cef99849696e19889cd15c52f7c6a20d053af05b2c76cd7b5b4c. 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/USANG2279365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356793fa1af0a6043a2af88d6cf436f8a53180696c3a5d026977bf7e782981bc. 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/USANG2279366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x548f12a3a5a9ed465ed0940e6f6001aad07bb3d6cdf49d16c16da5f8d125ae35. 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/USANG2279369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c744b47fa6cef99849696e19889cd15c52f7c6a20d053af05b2c76cd7b5b4c. 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/USANG2279365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e4d98af9e0cd61b7f5173cb4b2651475ff4d036ced19cf6c640bd86f04c90cd. 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/QM3DF2205636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19f2da724c600f275dee2515655d6939ae61d85b203388958876d5b7fda61ca. 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/USANG2288045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x405deeee0712021aba4f27e230924a47eb9c433836e137f93ddf6b75ac10e4c1. 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/USANG2288046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x317585c53a2155809f2428ec31d7dd2016f3d004a87dd8d8d07b765ab6e7aa0e. 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/UKZGC2203212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4241327c71d7105b747a20dd53f9560c31f721b38c9017ed4f229838963d762. 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/NL4WT2200192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b58ff4c7b4634b6e9cce68273da37dc1baf17dd00c94abd789bbfde7f103bc. 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/GX8KD2210431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf714c038930fac0e45056a891a6c919d20a0d26ba0819770bd617ce09ba94c25. 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/NL4YD2200207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f7e695145dd9cb3d32ed6d55abe9169e8003588bb6c452e51063defe6692dd2. 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/USANG2206293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c24307e39259dd2b459f7b39b74518e046ff2d30629f947a84dc4726565ee6b. 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/USANG2206294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d6a232af1d2fbfd11f63ebd5ca31e137844c89e5d5b17c4e4bb9e0453e68878. 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/NL4WT2200146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404b71fe25e57df2b00ec98c98e3803b1f8aa3b6b212612d02844f00aa208875. 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/USANG2445255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5902dce8b6543efb4667d85b5f325a6df91169d775f0b2081ee0355adeec5aef. 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/UKZGC2508383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaea6172fb4ac7f1bf1ae15572fafcb921e80b3783214a304af061f7fe8b10b6. 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/USANG2522955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe20ed0dfa1a877ee4258bb29862fe4c8276f947ea42509ab106740322e0953. 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/CH7812545672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3d4e0f2607eeebad276805d1bd28a6223765f97abbdb3aa90ade47054ad9a7. 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/FR9Z62500333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a6bf2e13353b8c6f38415d1a4ff44af87b129531b38a8a70081828136fac10. 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/NL4WT2500045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197b1b6a59c26815e75b16b995ba04ddfd3bc851853a7b0e1231476f720d8f6e. 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/USANG2483998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d2ba98ec2410d1315d58c9cefb3d10c977c485815631c1fe70d81d6338576cc. 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/CH7812415463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec1b5d89c5ef2bce5a5f0ae3fc7722e434ccdd2746dffdfcb25aebef91570f06. 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/NL4YD2400296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf714c038930fac0e45056a891a6c919d20a0d26ba0819770bd617ce09ba94c25. 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/NL4YD2200207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547c8308ac24903c4bcb4da25cfe4f5fa098f47733be3078bedcf61d08bebbaf. 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/NL4YD2200151.