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 0xae6d0938f6c01fc00beb3600d0652908f584ba750d0ae38e1db6adf0664fb23c. 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/df70f139-c1ca-4054-9f1b-9107bc84c9d3.json and https://artists.proofprofile.net/proofs/artist/df70f139-c1ca-4054-9f1b-9107bc84c9d3.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 0x5cb66697a45cd53042aec60ddca5e9ac653f67fae310ce9160e6e06eea1954fe. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:33:18Z), 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/QZK6P2184142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcea5937bcba09a465063def0c93c0ca6a5bce93aceefabdeabbd5b4b67ec43e. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZNWR2171048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a6877ad896f22c6cde4107db89a52b0115e5db395700090f7723c825b07982. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZK6Q2205627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c42ac06bf440aa0893e5cf41cb8c2d487ed55ace0999d98d3e0b2f4d9bb007. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/QZS7J2229985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba398745dee5f814cd423096e6bdabd67929d9e0378932750553e23e4b5a5a8e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZSYP2208333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d65fd835d851ce21694e56e3ae6e2e47282009159551198f64045e32d5d6e4. 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/QZSYP2250633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba398745dee5f814cd423096e6bdabd67929d9e0378932750553e23e4b5a5a8e. 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/QZSYP2208333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f3bd94783afa74519dbff8f551c39a94d0f65e7560b07f9324128d8d9e197b5. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:40:41Z), 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/QZQAY2356745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f4b3041e2069e7f837378ad897c754910dd639ec6a5b7b5fe192b460730118. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZQAY2318364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56da920cf04d9500c8cb39dd4f5515b002a938d76dcbd37322b70e125271f64f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZS7J2347377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e8af8efdeb4f59e4cf39a27befd5a723e07aa8ffe75812653f2c6e7b05f4da. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZS7J2380500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b57a613cc46f178f8b05859f3ba37c13bf6deb11a8d28d92850836fc83ff99. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZS7J2450132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d7df1622190568c4c7ba51060eff942ef0ec5c6731d6cd2b5037c35ed8fe0d. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZTLA2402027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0cbe65a5bb0b01ee0f42166c262f6b33152b6ed20ea5da1e603d8e3e59e2f8. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZS7J2413414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe5946c5e815aef83170b0f0f7b8d49a3e7913d005501ee697204711a4eb8211. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZS7J2472029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e58e704c92612017c7ac01efb17d688fa62275a3adfcfc013f395f8f2c664b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZS7J2474689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409f3570ab875a5fbda7a6e45886397a46369c7fa83cc43bbf99f2228a3c7413. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/QZQAY2522679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a0da79232be4aad274200263648c06276b4eaeeddcb9d472b1dcefff885850. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/QZTLA2563365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d1bf9575578de02fd53e95f67a3a445a95922d72053b9d7972d5cfd7ad2fc0b. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZS7J2552109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x357c65b63b83407e098ffcb37a0ce9801973af37ec81a8dc8852b71702dfd2b4. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZHNA2143961.