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 0x67273d23540e8f3f73739b1062e2cd713da9c9cbc36d3cd1acb626da6682dfc0. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/db420b9d-3a0c-4655-aa48-4ce21278585e.json and https://artists.proofprofile.net/proofs/artist/db420b9d-3a0c-4655-aa48-4ce21278585e.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 0x01103e624836a44d7a2b8931f59fbf32ec88382a5fca2823cf33db6c7733aeb1. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:24:07Z), 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/QZ5AB1979265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ceb3782be187a5598f2a83aa5f4f2e3cda6607b14e33d24e70f622da8db58f3. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZ5AB1979266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7918ca57ddeb7e6fbe4be923afb50aeefe8c191f0d66607d2fde3549c3780afa. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/QZ5AB1979274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f1c26f55f8739a3917bb22ce3a605c41d17b1888875cbc5606a78bc15f052c8. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZ5AB1979276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf19f73af68885bd998fa7d58ef68f64930cf58e59513ad1bc2dfdfc9f94b0cda. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZ5AB1979277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ea5eb7909d59ef22d47cdd9d0df56840c00f7bea831d85ff606d130cae795c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZNJW2131055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a089e7a1ec08d39d6c672d17b06f9b252621ee98b17f6e84ef396ba03c54c2d. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/QZNJW2131056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665226ba817a9ee36ae97167aa7d1728baf20507643f5e2b749f249b403d6359. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/QZNJW2131057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954e724e5fc8ac193d5c406564880b76f17c0383f77127d5af64d5374e185547. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/QZNJW2131058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x712833e41d2b26da8b09d9796f9fb921914cd471379a3895a20f3202cb0507b9. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZNJW2131061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cddf172140636886cb314b2810142de33936f470e4dc876ca66c7acfdf96687. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZNJW2131177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f39d12894386303c82d7a9c6b23a69521ef9b5cd2d094e9e669a4889746a160. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:07:38Z), 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/QZNJW2131180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aefa616223324909042cdcbbbe057a93da79f502027b759e9d1ab8e834671a1. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T11:01:51Z), 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/QZNJW2131185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb9584c44d5c2bcbd1ff0b78a1083714a2fdf1a6c9d5e739e01f2b93d0f809ef. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:12:01Z), 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/BRA221701209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc111b37160d8d66b1ebd8c13ee76ce9b3fabc7d04aa6105fecd4cb0d3eb7b04. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/BRA221701213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd95ffadec199f8578368613ec87741c2ff1425421ea55ac8623e55f1b8b8f5ce. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/BRA221701214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579b82d4bda8765dae3c15980525bfd35fa577bbfb3f638839ebdbd2edfd43a8. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/BRA221701215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ec78c052527161ef24ba7085a53c6875c15e91b91aaf458420b3bf89565767. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/BRA221701218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1f9f7f5c5957d623533c312930805b03b9686f8f08a3558252438989640d09. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/BRA221701219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ef98cff0491dbea4004d127246413f62b63230b29f9e105b5032cb3c9ec616. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/BRA221701223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e9eed6bf1c5aa4af0019100eb9c1400768c48cdfc1b04376f611fdbacb2cab. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZ5AB1786348.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe17981ca197d6297d6b6abf3de843089e2bb86e8251a356af8a1554c27d6daca. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZGLM2217879.