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 0xea2134b65a7bda9e73772cf46a7e8fd88081e822b2db04779c04d0be6132136f. 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/2ea1856f-0071-4c89-bcb8-c22a927c3e2e.json and https://artists.proofprofile.net/proofs/artist/2ea1856f-0071-4c89-bcb8-c22a927c3e2e.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 0xdf5f76340b76e793e3d41e37b47513b45f9e95eb1b8d9b834a4e0d9b910bf96c. 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/ZZOPM2108934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc862d03f4799255309fbc56b0f9bcdacc67b8981a13e159e4c4a6e53b2e2df40. 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/ES71G2301202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c3fd8ce9232f9c274e7bf6201b4836f4fdd45d310d69a35a887c1245c79f36. 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/ESA011526970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeebe3325fc69767bd1deb45ba82d9efcfee8a507712292ce4f1475ab92c8178a. 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/ES5022200278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x069dfad0fbd8ce26cd18f5bd5510c16849baab34b3e99f8e59e40d7097f7c859. 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/UYB282220010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607dcb5673234d8e69368b4d90b74dc9f30b6056f2310b9edcfd442db5082a1b. 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/UYB282120007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891b4a1abeb344c1b152631f8fa0d0003c6262c3867ca69a0c4aeb263810bc90. 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/QZTPX2111487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5fb440ad2d8819f06720194e30ed1bab52d742aa9442c566ac71ff3b7af1180. 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/QZNJY2132895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5669878fc8f26660c28ce8a3a2e5a4e33a91b7aaf0660473d8cc7738e52e5f1d. 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/UYB282120004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c2d3dc40d2f1ae8bab5158edc02e3a167f1577a0a1ac12224dcbec82a010ef1. 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/UYB282120002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72a5f69b49c5567dd578454bacdf25a01f9581e101d5d9aa276acf8315f595a. 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/SE6XY2104319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf31898040b00262142f5cf84c2baf0918b79fd85ba6c0f3b14fae026e3fb34af. 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/ES71G2404964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7ecc06f01a85494c6cf804251c55c6df8c1a399339efc97838cedd44f6f910. 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/QZTB82200000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4eb8061d822e5e8e4c44b2b80a474f66abb1028acf4de5c7560b6f0a93e78c. 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/ES71G2502655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6108055cd1712ecd7e3fd7fea862affe8b1bad6ce5f77e8af622e380277c119. 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/ES71G2433608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80ad9b1a208ee48bc56cdabeaf61d3b965502b48f24e017d882f0f8f7cb6b8d. 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/ES71G2432859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69384caa4b3eb488a5c0815490c25c91ba4e303593ce7768b2e0e88ec64ca28e. 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/ES71G2432167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae6cfabac30c4b89c16db3fdc8b8f6103c52a2f9e8202b5a159cbeb65889c94b. 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/ES71G2429548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc94b8add67b7547c4b5e6417d4179b419474994249fccf5ec08964989e0fa61a. 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/BK4DA2447209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ec5ff2008e9f2685a24483621f75e56b8556f80ef3520940a833cd7a8b6729. 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/ES71G2418551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf691839e781d46d399b9ff6e29e2011c248446257c027686a21776106d77956c. 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/ES71G2416406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728acd98ba1611c134ddc7d581cc546562f849cc714baaddb37a94f09fc0776d. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/ES71G2414175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c3b15c3db2621ccbc4323e1884d343e8667563e3f076849f5625234095a72c. 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/QZNWR2417849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe871993baf0c5671834e8290523d755c88caebcc45e6c2e524c4a709fd714d0b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-16T14:12:37Z), 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/ES71G2412564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae4e9242cdb00de0a571abf1645e135b586ad972a9eaa022d25375c0da56cb5. 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/ES71G2409912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24735a91389a022a1d8f143e85eac556e1cf6702554a6be264c9c5fca54d65a1. 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/QZHN92454008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d08fe7472eb33f2bb60a8d9706f1bf0d57c564a3956e96426e9c529c6c15fb. 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/ES71G2402628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc8b109981b7575b079e8a6c88b9ecfe3932b6bd8f7ce6ea86359ccf693a684. 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/ES71G2401172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ed4f599003538b71578901da0336fddc906bcc662b0cff9f3f50ad10db2a6e4. 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/QZTAY2240120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa065a2f9131829cdcd549a8bbf217e631882569c195b01293d62ecaa3291c160. 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/QZNWZ2249044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e9b8841bcbf91cba7ef855f043467ed1e547564369a909ffc536d7e5fc4e8b. 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/QZNJY2281640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0afa3558de5b474b0fb0f6f95fd4f6591c68188d701b2962c04bd1a23a632fe. 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/QZNJW2211980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02db54a80977514b3117dcf5ba4d7c7599e64ea483e2791b1a6b2543963fee93. 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/QZNJW2211981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b71c17250308a808a7e8c32063d48a2b4f50f685a5239a77b1ca8d7e1864e9b. 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/QZHNB2220351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd471b1724e0f47f06fea44235be1acfa6d628335030e9aa844f839925874f22. 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/QZHN62259145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607dcb5673234d8e69368b4d90b74dc9f30b6056f2310b9edcfd442db5082a1b. 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/UYB282120007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d53ee477000b60f82f915e408ad7813c8ea26714677f1c5619066ef6f1a2d4. 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/UYB282120006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5669878fc8f26660c28ce8a3a2e5a4e33a91b7aaf0660473d8cc7738e52e5f1d. 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/UYB282120004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c2d3dc40d2f1ae8bab5158edc02e3a167f1577a0a1ac12224dcbec82a010ef1. 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/UYB282120002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x460620730eb69d47914f9bbfdfa0438ce62d9c216d424390ad70f7f421042845. 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/QZK6M2199859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x405a4152626d05aa9adafb3465dcda607562b332331b09e2a4c76dff4b0846f1. 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/QZK6Q2127559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dee556289d3aaa452abd25a9ca7d28fd09ac9b8e878ce2711e6db092926ddd1. 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/QZHNA2122957.