1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0x10497a17ba0f246e795ea2c5b9132425f31ecfb032826cf9b11ffc597b39ea3b. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/048dbf9c-2ac8-4cb6-90f6-ffa8c9bbd938.json and https://artists.proofprofile.net/proofs/artist/048dbf9c-2ac8-4cb6-90f6-ffa8c9bbd938.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 → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0x1b3eed990d955a30f75ef55a1a2724dc93d4830a104404a472accda69b6d2884. 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/JPPC02312906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd689849cdb503ffe3db8c6f444d352ec3cd7bc71fd902d56fd754aba62563df3. 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/JPPC02213325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf22552fd7fb15c2fad665e9604a287adcf7df07777f4625d4235e13463ef11. 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/JPPC02213253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64970ea5f2285369ddab562072cf765446451d1222894744aff4e5c9d15de3e. 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/JPPC02311656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab336640f9302d15f618e07cb01f656a1506bb9aa3586ed7a5d7da8c5fd07cf5. 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/JPPC02312908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ab14faf27abd7b0b4cacebb16d92d9b04751209db488bf39b4f7b91d9ec381. 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/JPPC02312909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a13c92eaeaffe87617991dee1698eaa048ae69d392fc6e6c2e051ece40c9a4b. 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/JPPC02412323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64970ea5f2285369ddab562072cf765446451d1222894744aff4e5c9d15de3e. 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/JPPC02311656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd689849cdb503ffe3db8c6f444d352ec3cd7bc71fd902d56fd754aba62563df3. 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/JPPC02213325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf22552fd7fb15c2fad665e9604a287adcf7df07777f4625d4235e13463ef11. 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/JPPC02213253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58cbdf3c7189dd788b563667eabe9e8d051448aaafb047a557c6ed37c043951. 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/QMDA72219403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c426446f070c6804349746d7d0aba68e3b2a56e660468a5c3579d5a630fc6b. 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/JP92N2238346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f40c89645b5f291a26894ad50bc91fc562afb7e523952ac41e1342e9105f5f4. 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/JPR502200315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0176e715580417b2ca6b245f6a02477ec5ce796d3f9b20c20f134d8defb9face. 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/JPR502153276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6efc158e91d96bb29b7c69c53266681a6f030dfd74b690f7677f1c11d61441. 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/TCJPN2175543.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58cbdf3c7189dd788b563667eabe9e8d051448aaafb047a557c6ed37c043951. 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/QMDA72219403.