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 0x777740abda56ada9a67d24e4f79589b34362e581fd243392bcf41b9e821174c4. Chain 2 (Bitcoin): anchored in block 953614 (2026-06-14T08:40:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/18837dea-9fc0-4504-912b-200282fb9473.json and https://artists.proofprofile.net/proofs/artist/18837dea-9fc0-4504-912b-200282fb9473.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 0xb2157947f080299e7d6d50c3adc942e1a6ea0fd670c1a20c013de5abe66355a4. 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/QZTLA2442354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x405aa2584a6726357681d33719c4a5a0c7d2a1355b2ccf15296dcd4c943a4ce9. 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/QZS7J2490862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd65b920862c353c1f237a4d920c7a91a56de1631e71af8cd838e434046a7719f. 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/QZQAY2405572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa33554500abb19a5b31333c21fcef64271220abff40dfd914624875ce41f183f. 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/QZQAY2429839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75a1fb526333a3888d8f906829a3a7bcedb8c4ee10529a6fd94695d83243509. 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/QZK6P2269773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eed3acdc646f168dd4293ee30072ca4cfaca802ac3f026062c77cca4431dab3. 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/TCAGN2216700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb332a739a49182eb83e54bd0c7970c8821fd8bf9300b1502f6888480de56dd8. 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/TCAGN2216709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe977e1a2ea953e84aa9dd31bba85b238c4175a63d6062d9236d518440cf2993e. 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/TCAGN2216720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b8db523db608ea5c592f0fa4ef9e9ea69a7a084f67509165e30c4be18b8e31c. 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/QZK6H2248020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3bee353369ebb6e3be7fbcb6a312fdfeefacbf9e1322fa683130ab7d78eb6fa. Chain 2 (Bitcoin): anchored in block 957304 (2026-07-09T12:19:34Z), 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/QZNWS2254953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d712110db097fcc8027c978a5288a55883441df5a5c3558c90a095d07d77df2. 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/TCAGN2216748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x105b0adb2d2c940328cff620d9ec17644079289e07230059c02a4258625b1b3d. 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/TCAGN2216752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d9c5044e171e24343012f05374dda856f68e931080a79b82e9c376a43e78de. 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/QZTLA2415726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a85fd8489626713c9c7f4ef9c34793aec281ab45912575b776ea67bbc7e5566. 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/QZHN92420015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e8edeaec2fcbfff345de77089f28372d6a4367b504ccd26aee66555da8b983. 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/QZHN32405418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8ce62dc240b48ef58782a5245db3b6fb7ad434f52e0e2ebc9f055bd766ea17. 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/QZWFR2323653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x078f931090bc4055aad7bd51276b801bb9d40efd45de6a631283c2ee85850009. 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/QZTB42327194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec1276bbbcf6b9d35ecd83a323ae80988199c1acd18eafd73578140f5fe20e0. 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/QZMEM2328186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3e7e94f7f8a63f49e31225e409bf275b917dbafc6b79d1cccf327e020d0edd. 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/QZK6M2378316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c85c95c987e2ba48dfb1aa565464da3efa27d1f050cf5c4e03814d1fa2cb92. Chain 2 (Bitcoin): anchored in block 957253 (2026-07-09T03:08:40Z), 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/QZK6N2368556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0956729b8c62f8605145069a6a3751c643e48e6bf4238bde012582260b32af12. 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/QZHN82377809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e2f2ed5dc49571c0e6271b92b2e7c8d19fc093720af60075d16df7a06bae4c. 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/QZFYX2309510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b8db523db608ea5c592f0fa4ef9e9ea69a7a084f67509165e30c4be18b8e31c. 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/QZK6H2248020.