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 0x6c3dd662b5702a0a85b68e503e07232aa3620284e1b4d1ac821f7c47f7359da8. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/618c5a60-5105-48ce-828d-7bad0b03ee5a.json and https://artists.proofprofile.net/proofs/artist/618c5a60-5105-48ce-828d-7bad0b03ee5a.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 0x316546d592a7fa41003690db436d1e0b4dce5a0e1f80e40234726c588e7a0bda. 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/PTNS11200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe713c635578b04d5104465cf4106b56e65a569ffc7e4376c682e24a1786a2f70. 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/PTNS11200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d23835a39692e936f3083ffe7dda44ef488572677ead8b48411ff8d33c888c. 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/PTNS11200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c1d5a736bd578f3bc1b630915c34238f906290cd6ca6d7b402bcec143d1d87. 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/PTNS10700020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac065baa6635e9dfdbb7cb1bffba6f1f0b615b107023d26890c0709f993e413. 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/PTNS10700019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd1ed4eb61b1a6a8d63296a1782a83b4ef38e5742761fe12b875074eeb8ee0ed. 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/PTNS10700022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x346c3946e70cc2002b2ee8ca9b073692110f3c853663e9116a827197d886a5b5. 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/PTNS10400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96c603801102b50676f9435172150e406c68dc941c7ae53f6be39248fd3dfb9. 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/PTNS10400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8568938edc114fe2edc7d2b78a4d27c6d0f6b34b86ab51399f174b024a1345. 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/PTNS10400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96edca109b324e34c040f1e6c961323bae6d20edfd735059a03080a707d6404. 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/PTNS10400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf78d03d5e64f2332f87b5df6017f94c758f37b1f0bae0531849ef96283eeb163. 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/PTNS10400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6b6a45058a3d0e1faf5e658857cdb19ac93c76cee46d292b1248b96ffdbb1cc. 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/PTNS10400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc1a7db51eaedb4c02bdef6c0329f397e4e80c4d6d3b8e976052db3fa945912. 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/PTNS10400012.