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 0x0152e1d19c5fdbb64974dcddd35f79022fa4faf4ed993831fec944fab997bf9c. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/45089c4c-8d56-4be7-9ca4-568a8bd42914.json and https://artists.proofprofile.net/proofs/artist/45089c4c-8d56-4be7-9ca4-568a8bd42914.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 0xfb63c4fd7f95c423001816f2caa882c21f64bbf959c6df4af75a254511229d55. 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/SE6I32369358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d1f69b76ecd6a0ef97228c3d5f63701662bd0652953eeb0ca8dee5f6db882ef. 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/SE4BT2200801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfebe9a9c5c1c6e536f8480c976de34554d92d1df9fc6cb52f44fe3e74ff45a83. 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/SE5BU2289724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb5fab3102d280800e24449e942715d6ac24e4205447a807ee46566ae6db7f8. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/SE6QE2172359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d3dd19fec32d730837191da3cc85843bda3c922257b912fcbf7eda7ec7112c0. 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/SE6A92194555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc57f767d709400bb5d2e96f6b8288449891c10bbf905efd40bc451461504a3. 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/SE4BT2000201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c51786edc6d7ff5abc123f2a68c95d332cf9b48a57b38e78dde17a20ee84bf. 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/SE5751954491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c974333afe014856a68eae6dc508cc374d5070a0a96b1349e1f0b9abcaf0e2d. 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/SEYOK1779398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x604bb579a79a7e9ff7ed4afe01a04c04cd54664503029956fa819853423745c7. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/SE6XX2106240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf45f5cb464d2c8ee0508fbc24beee073e54797ee10778c7f9a6feb6f0d4ba58a. 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/SEYOK1863337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2299375ad36321390f96c3af1222c938a78210cb1884ef5991ddd06dd4d088dc. 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/SEYOK1863339.