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 0x3a0dbecf684a7bace3357a71a2cd6deeecabf42032a665b2eae9fbd885c69c6e. Chain 2 (Bitcoin): anchored in block 954502 (2026-06-20T05:07:36Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9c691fb7-08af-43f9-b413-fc52f19a7943.json and https://artists.proofprofile.net/proofs/artist/9c691fb7-08af-43f9-b413-fc52f19a7943.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 0xec646162c376d53d9ac65ff896edea03e610089455f205e418718caea7f8f5b6. 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/FR10S2167921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44dc8395f47d93291b84b4a3b3eb1250dea5023b930ca7c5d8dc74a49d3fd839. 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/FR10S2167922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb42d705b286c0dae02fd88b7518d27964ddd060539f8b8e7fe74ce9ec2fca613. 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/FR10S2167923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7bd45f67e755371138852dc6793539a5a61e1d9b3896d1d01831bc3229bbe24. 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/FR10S2167925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb770ec875dd9ab19231301efd0ae7cb4061954212124b4affc6b8e93aeb2e445. 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/FR10S2167926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e37aa39f4b72721b5a112a447a1b1accdd99970b91f6adcb22c7bbcae93999. 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/FR10S2167927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77489881fe6d7e1869164455977dcb22e5fddaf25f3c1919f557873fb9a775b8. 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/FR10S2167929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b74e2aff9167214e5e9b4d5f2c4da56bcc9eec74735e446e7b4fcacf8b1eef5. 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/FR10S2136994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29641d38b5de5fae80b49b4847a827e52e8e197d4f500add5249b9c0916d439d. 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/FR10S2136997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55931ba360efed56d465038f9977aad6d5fe27b26f4f95a8f44c60b802cd77cd. 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/DGA072101980.