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 0x8d31ee8d206262b78912a65c25a2b8d1217094d7fe90532b6da64efddd66b5dc. 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/f9f7464a-eb6e-4ff1-9860-d4cb13c9d5a8.json and https://artists.proofprofile.net/proofs/artist/f9f7464a-eb6e-4ff1-9860-d4cb13c9d5a8.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 0xb3cb039df77bd94ebbdf3f1dad94bb7cc6c086298d9a824e85f0bebef82914fd. 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/USX6U1700253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf60b098d837a17e06f1d5b00101cb8fd0963162d183d1d71b6e1fb03e042c642. 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/USX6U1700254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1aff9859ca59d4554d8eb207e1d3077c39344d798464fd3059f57c7c7813efe. 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/USX6U1700257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c95f07f27b26114cfedb93c8bbaa7c92888d9f69fc394b43321968dffb80e76. 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/USX6U1700258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f637416b8f4ec277f68d1c5bbe2e7c5fb9100d887f5b08958db68daa59e7dc. 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/USX6U1700260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b61807c61c8e10a5562de6ecf2d066c8bf26c0f413d9ecf33548bc8ed3aaa9. 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/USX6U1700261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a7287e7291ba0e5e2f170099d96ff5468474775d9f9cd21347947784a14d6f5. 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/USX6U1700262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9452786f25f44ce548e909777a4ebcd2fe02385f4b1b22fb14aad7a30a6aa5d. 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/USRE19700208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de5ea3d81064072925496603752c6f28e9666142353f03848933ef165999b76. 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/USRE19700269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4fa5110619ae357317d8362a1ed595236caa0480a7b34a1e96f4c3962aa08b9. 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/USRE19700268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbfcd5220890207b6e7145a60e50a7367f1634ee695392a80e39f092aa8f38bc. 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/USRE19900277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a876e70f9cb3221b16748532746872bb6123b267ffb0efd86774d3f1c2281cd. 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/USRE19700271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa464eaa082e481e37bfd24bdd4bf09b8cb866d479257f88e42bf2eb245b2747. 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/USRE19900281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbfcd5220890207b6e7145a60e50a7367f1634ee695392a80e39f092aa8f38bc. 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/USRE19900277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18cff590f84cc9dacdb7cb4b9b82162e039984e6bc2d4bf7d79f11c873edf4d9. 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/USRE19900278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa464eaa082e481e37bfd24bdd4bf09b8cb866d479257f88e42bf2eb245b2747. 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/USRE19900281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ecb2c2d9643433cbd1330e2dec1d5fa596d72ca5b6e5f33e2c3012eb7bc16d. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/USRE19900283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b81421169be10ba643a1dd9eb22309d079a84392f9cd2d9fe79188a5c2c43a0. 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/USRE19900286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x137d759c1d625d7eb151ebaa0b5b63f373ec4b2ea9c819597491f0872f73819f. 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/USRE19700264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc0e441f3ab5fb370b01e4993edcae8837bb9b2e3c473e410a006217903aacc. 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/USRE19700265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54f5a4575234ebbd8cc0b2c11905d4a2c6ae2f1b8ad099fd12674fd9f13cc3e. 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/USRE19700266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9452786f25f44ce548e909777a4ebcd2fe02385f4b1b22fb14aad7a30a6aa5d. 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/USRE19700208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a876e70f9cb3221b16748532746872bb6123b267ffb0efd86774d3f1c2281cd. 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/USRE19700271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de5ea3d81064072925496603752c6f28e9666142353f03848933ef165999b76. 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/USRE19700269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc2783ee151281fd832277ab6d1ff3a1e1cc3d30ccb6381d3311c7c4f681ef5c. 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/USRE19700267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4fa5110619ae357317d8362a1ed595236caa0480a7b34a1e96f4c3962aa08b9. 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/USRE19700268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4510028e00a3b8cbd985cdd39061d440b9ed29e8188c0ef3f9d12dbfcd9baf2a. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T16:25:14Z), 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/USRE19700272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e407f80ba3481dc0c7660d588f1d89a56ba1263dbbbfb686cf4fbeca82fea04. 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/USRE19700270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a89f7ccaa862bbc88e8243a07839d944470ac5267061f480e029bbeb0664d35. 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/USRE19700232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d7671567249970e6f907b974592a9fc30bc70472d57858791757dcf04ede7e2. 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/QZNJV2085556.