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 0xd5b276bd7e1960c39e4b11e9b5f5f3e940ada1c85b74c663814692ce8a248b37. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e58c2b90-9b2f-4127-847a-c7746a445a97.json and https://artists.proofprofile.net/proofs/artist/e58c2b90-9b2f-4127-847a-c7746a445a97.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 0xe306e37749d6bba80391078368a8c46b2b84fedc8e3da847f95f125dd40ae52c. 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/FR2X42520936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2524cd3a05540f6dbe4f1366ad063973aca04f2ffe51e65eee5af5bf7e27835f. 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/QZES62586180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea80862824e33748b859003d40fa4c679a93eb16c6958f7995a2fffe18a19c3. 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/QZWFJ2484669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef359e9ef1c7abd4cc88f620db64ac061c519aeae439a0da54462646d7c74c1. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZNWV2449566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d150e942124aacbd43c1feb49040434a60e8a52320f936d846123589b4eea17. Chain 2 (Bitcoin): anchored in block 957212 (2026-07-08T18:33:44Z), 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/QZWFQ2311802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e330d5ac874b7275037c356fb6129f6e6b6ace0444b36384a7112eeee70afa. 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/QZWFQ2311803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21362c5f0f58e65bb3a9fbe2875e4e96eb1b22ed0e1d22acd5f83508b1db5439. 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/QZWFQ2311804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc739f5373c7d8e8f78fa14c828fc4b9c406183a683a417cc3679e03fa27a89d. 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/QZWFQ2311805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9b1b6ad463a6240a2eba9a1959b136f30e330e462c293dc61eb218b1d4fe08. 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/QZK6N2231395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6940017e7e474247d6be7800c64adab36ba67345c365fd7786c980d260a60080. 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/QZK6N2230402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e4ab067097e36ebbd262dd841662db5cc7f95d8b42e5d7df29a044f64bc29c. 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/QZK6Q2292465.