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 0x4d7943c369a4c99a55065ae0563caa7fbb1d48a85b97d422f2c3cd475cac065e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/96a19823-6d0b-4fdf-8f64-66210ec6a8a4.json and https://artists.proofprofile.net/proofs/artist/96a19823-6d0b-4fdf-8f64-66210ec6a8a4.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 0x400a01748f948fc504e0eba1508965445d7757e88c11dd75e94a9fc20aeac7ff. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/QZNWU2187963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f5e12162d6983e82733534da028a42db1d704e3aeb2e1463bf43fa6d51788d. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZNWU2187968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5337bf6167c273598991caea19a9af3b71b950cb6e067bc54a348737425bb5d. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZNWU2187970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0511dca2f2b069c3e9502566c5d300a8c75e74e2ebf978343a06ff6934f8ecd5. 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/QZNWU2187971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca7cf7634464222b3dfd7350ab8f237b7de76741c49de6e4e07963a8dc50b4b. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZNWU2187972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6cfbda00d592f4be03c514e67eb1aa0f15116e89cdc855af97ac9451d9386a. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZWFN2393192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec8531f17417f2c91ea9e0fd1338c311f4edcfc3bffe2fd7943f148d765d1f7. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZHN52469563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a90a317271d913e01a4eec3906351626a125ebfa0abc71bbd0cf66e475a901. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZHN52469564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe728a51f6be93f5406feccfe7164eac619a749e504b1c8841f6a02b13afcd74e. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZHN52469565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f522a085b3b70399dd3df0456d005e6eedddbe68e2b45ae4b8ac206bd99073. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZHN52469566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db59177517038c4f0e9bca4e22abdffd4c7fbea433e1bf5d7204c4bfe1eaaa8. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:49:55Z), 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/QZHN52469567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6977fab98facf89c65b005e8614e5302ad47d85d389ea359b9d89e5c7253890. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QZHN52469568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff525fb9e8d2fa2fabff8c40ffc2a45cf36757e3bdf6207b2ecf13bd2b6326d. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QZHN52469569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f1914d6aaf46dcd2ea691513e6642b5f7423bd1511e1ade64fe26521844a862. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZHNC2408541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84202a3da7b33fbb93da693e9fe5966cd9957bde4bd16b525d7ca0a64988d650. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZHNC2408542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b9ee01e6eebaba3cb7360e35f18b51ce6cf888be745e9ff536e8e4b414cdea. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZHNC2408543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6804e9c44d270e03001573866a671f79b8d6f6fd85480f1075cb47e4bf8c6c. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/QZHNC2408544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b264bd90d2d64a530b163e06f53eea738a65758c1a3b8128d2e9f48ff942097. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZHNC2408545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee722cf637885415a3e02626503519ad3ebfd832904e3bd9272d9fe64965138. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZNWV2473860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43327d2c6d9649ee13a45c5bf580ae93b54954b9bb1ae3874dc687234e134123. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:29:44Z), 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/QZNWV2473861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a292d4b7c6bda2a5e6631f09f237e3cc0c863e777199e240d19dc6542539383. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:25:46Z), 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/QZNWV2473862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x003ca444a33caf6624ffcf5e07a29aebbd5421d4aee1d9d91ea234a7c525e3a9. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZWFG2480387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c225503a7f8da0bb80a6a524fdfb4cfee0da73938b6861894129dc795a5c571. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-21T09:10:17Z), 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/QZWFG2480389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b625ccf302f180edf5d910115d161f75f8778892b8d83da9e0037e29bfca36e. Chain 2 (Bitcoin): anchored in block 959011 (2026-07-21T16:21:53Z), 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/QZWFG2480392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeddba9ff494d6f92ff8de50d62a6668e804fd2396fb6bb222ad97d666bdadda2. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/QZWFG2480393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73aa5fbc28f70bf5c50a177a4521ac8a26ecf25612659e264c17b2682200dfcb. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QZWFG2480395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac3a1a82da61942186a615b7ee04727deb73296b1eb944195af8224fd4c76fcc. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZWFG2480403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81e83947ab045de7dc0e356ecbe7079816204643e270b3f25f7bafce5148821. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZHN82597910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd41142240e43c54181a2fa24ef2bdc56d30644519da53d4df4a7c6955d2726d3. 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/QZRP52550763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4353c09f64bd6dfc4f191713a041e3f354fa3dcf87f91ee020ae1b9b68ad2b8a. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZWFW2543900.