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 0x941da0f49fb62f6a177c9aebbfa37fe9606adc4ff248933f1beae9d0c19d22ea. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a6a590e9-093f-4067-8759-17c6a807c527.json and https://artists.proofprofile.net/proofs/artist/a6a590e9-093f-4067-8759-17c6a807c527.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 0x4b20bf04b2f7ac1030954cd14d7a61f7e43d670d22c33b4cf445f6e0ccb950ca. 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/QZW9K2264265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977296dd7a96f9e14e3a5e34119664e72478b8e18c7966018ecefb0bbb849585. 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/QZTPX2219217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f4faf9a8fb5957e236541bb2bbbb57d87dfb7d50917b5e512e915e6b969a23. 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/QZTPX2219220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968543649187610543cbb5e87bd23d1077669c5d3920ab057579f049a664b8dd. 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/QZTPX2219221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ec62abbd95d8e94a301ad9a420e9a81d905e99bcffb9d357a92f36759a11b8. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZTPX2219223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037fa2714e4c12d3cf8150f23d829c7f2ad6569df428a6e2a65b223516c32a98. 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/QZTPX2219227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a6a1e3f939fa9eb3423392db5b0b4128d85e32dbc702f7b30e85e5b0259ddc. 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/QZTPX2219231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc1d359de1c21a897c59b7a22034fd29b0c280eb6add1a22b95cc48553e0ebed. 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/QZTPX2219232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f0c0f30d55d4f4eff2b82a57c9855a3ab39024deb04a09bc4ddd79625df313b. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/QZTPX2219233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe252126660f3ba52a4cfd4f5e1c5939b694f1e6ccec348013beea67bce6eb5. 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/QZTPX2219234.