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 0x629a3cb9c0ec602afa8eaeb9b1eb152ce955bd2215290ce32363b3394796eab6. Chain 2 (Bitcoin): anchored in block 953907 (2026-06-16T07:39:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1751178c-4597-46cc-aa28-67aba41d469d.json and https://artists.proofprofile.net/proofs/artist/1751178c-4597-46cc-aa28-67aba41d469d.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 0xa8e6f5a0101e31f437183db8cf8aee3640e084a6ad3756e56941a155410a6cad. 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/QZQAY2382280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x688c92cccca90d2db80f36d8221484a77c4d918e13d1c2c6e827084b61e1b9df. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZQAY2318897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2bbc3a2710a1500fe4df319743bdfb3f7ed4a4b6a7e68efc6b91752e8bfb0f. 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/QZSYP2266018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d4b5bcad5cd9dad7c89d79c812f9a105fddb27b3cb361230e82720ec482f71e. 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/QZQAY2305962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3630580a3cb720222c4645654ff0c4ecd0c396603db75cb5fb8dc5bfbe64e8. 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/QZS7J2222278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96cb3a9737c844542316fc647e66bdafa21016fcae3f5e62d940b96e4e44b21. 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/QZQAY2114798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0535723a7e4dd2a5b64a8a66b13973503cae4a493e0bee56e25eaad7eb871298. 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/QZQAY2391163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb622fa9ed0825b921b0230327785c1129689d9da10afbd5f506ba8f2057c5206. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZS7J2121679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9529066a4d42b461470f5d1a7ab8aab8f0299e6888460b0fa7a93bf6680196. 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/QZQAY2307503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12177893880ecfbeb70f080c11d5990264c041208a14e759273e0ed8c65cfb81. 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/QZFZ72385176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c2f2c4caa4a145cb74cb61e271531d0152f74421293e54ff2c41ae3ee1b441. 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/QZDA71816302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9500115b38765988500f7566f1750bfb7209e5216d85aa89686ff93e6183eeb. 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/QZDA71816305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb7d73ac0fcc005444a88284b80dc2e93c1ee8aa088d3f8170366e08166b751. 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/QZDA71816306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c7388fa3839bb05916090de1a2f2651275cc077a2a82b4f8dfb2c7ca9da686b. 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/QMGR32260183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e8bd3ea4225b513bef0a345f49a79b8b43289c4f7d288b2a3a65c81ad6fe1d3. 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/QMGR32260186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x434ab8ec5ab5efaef5901976770b80900e7cbb89eead1b1de550c3aa48189b9d. 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/QZFZ41953374.