1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xc44490038593c79ff8ab2544a66f015afea2db7383fdb14d451b86ed8c4f9981. Chain 2 (Bitcoin): anchored in block 953899 (2026-06-16T06:37:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0ffdf286-cc82-4745-b596-c72e307adb6b.json and https://artists.proofprofile.net/proofs/artist/0ffdf286-cc82-4745-b596-c72e307adb6b.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 → block OTSBitcoinBlock must exist at that height 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 0x17c9ce03193f32c9dc6f391a347b3bb48c76e95f84fa1c1b3e18eb1b99692e9b. 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/QZ5AB2034264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd307b2fdf68560e5b18df1da968364f143282ffd542673317a9c99f2bc25383. 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/QZ5AB2034265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x470b901239392f0eaf0b2de5ce77b72314e3d43a07d74a060fc240555b2ae658. 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/QZ5AB2034266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b00c4fa23ee38070508be3f3e654a362ac0d8e2a7ac30e10c982274a6af1fd. 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/QZ5AB2034267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x640ec91599265d232f1bcb171795b4905437c089dd6c5aaa4dc166e86c20b54d. 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/QZ5AB2034268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x863973f6093a9526730357b7c43eb72da309b41d5bc410e8123bfef2fa86e382. 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/QZ5AB2034269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa845cee6f5836efc2d6f34c2d1d531b99e3485e548e149152f05c4facf235416. 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/QZ5AB2034270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0712b2ead5c23131879632d140e8f25d307b7ef27f7c0b6ece792b187480d9c. 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/QZ5AB2034274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b4c6f50b0bfc388561950cbb8030e671c240b2ecc74412818910748a15d97d. 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/QZ5AB2034275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf61a10143cdcb87e0e48cd00d3f3617372534cea5b627f5290f53526d592a96. 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/QZ5AB2034276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb361539d6953a95feff78b9dabc4e1e0eb1cdef2391df53fb18afc0be94c04. 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/QZ5AB2034277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe512872136c11e9179fc2931f0b985a4dab21c28e9cad6e2be40ff373619eddd. 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/QZ5AB2034278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc51438e8ef8f6fa9955bd4932a6ef31e99c7acf8f41171f5de8f50eb6aa04a84. 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/QZ5AB2034279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x960b3d64857c2402895dd35cc8a383a9640b566ec965b5777c915a751bad2e4f. 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/QZHZ52270251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c349928ee05d0bbb2992b17163a726236091d4d4eddf645d6f67b80d78e253. 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/QZHZ52270253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b799e3404b7fb08853517eeee1f4fd4182271dacd5123eaf2b0eb9666f10e31. 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/QZHZ52270238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec029bd5ead941d712a5b6ea60b44f5fd7c2ba0e2516598f2efc1efadd183811. 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/QZHZ52270241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61798d35ecd95019e1b005fd6503f62a4691a47befb5985ff70fb4620729296. 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/QZHZ52270245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7116774b55b32c821503e85c2b13cd1cfefeb163b656874e91d8502f531fd66. 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/QZHZ52270246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f219511b154d0c14a5a057faa6ae9060110db17877bd4c55d94371f15d3d005. 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/QZHZ52270248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9edf8d3a94eab143729098d8ef88d3d8ff93fd775730d92fab3db025f30731b5. 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/QZHZ52270249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x793491bdf70edbf100dcf79e0d3c048a0d435aeb2097867c5439549b8b9384ec. 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/QZHZ62151868.