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 0x242f5e0d707667a605eceaf163914161c15b7d4172a237dbc378b85bd6f0416a. Chain 2 (Bitcoin): anchored in block 953636 (2026-06-14T13:03:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/36dc5a82-37ae-4f2c-871e-84abede3be48.json and https://artists.proofprofile.net/proofs/artist/36dc5a82-37ae-4f2c-871e-84abede3be48.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 0x17692859829c7a56cf94502a470c2166b83e9d7eb3e29fa121ea0b8c2d47dd27. 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/QZTB72271018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a4ed4981723ec18b79fd48a1b4db311c4e0c0c22d3bb3f042700ebaf71ac143. 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/QZTB72271020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2afc5d1f78df69444177aaf1eb4df3f97572aefec9bd4e54b79dde9ce99ff8d. 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/QZTB72271021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x519fb1d9fb9352dd3e82043762bdba1c7f1f2563c4f0924f3a9b8300881414c6. 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/QZTB72271022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b10dbde09ba49e3099620c1962cfc4fa5f5bd8b243a756394bdcabce87e7b4c. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:09:26Z), 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/QZTB72271019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885796e27550649db877ac3abbe64a0306dc1dd26b5af1bde4f0bd6ed8ff6e50. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/QZMEN2244417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c818e0b80030bd8fe9300947d517b2ee4cf57e8d9d9905c3f2689d86e912ed6. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QZMEQ2258044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8943506440c25ffb05fe42526091f6ca654c52b0efac3af1826f40fc17d1892. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/QZTAW2250670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb4d8fe35a46f43c97b7222c66573e440e3b3ec1d8ee4ace31e847aae542247d. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QZTAU2267519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca4dbfd99232f98fac93009eaab3ff4be284ad2d94ad88c51b236f33ecb692a. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZTB72271023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e1f97eb608f8e6991a27ed4645c63bcfbfed9766b70b9fd5cb032dedf9d2fb. 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/QZFYZ2249486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x064239b8683be1520e8f73d6face8852e044c8d91108b77ec53985d538074674. 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/QZK6K2431075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc85aff860cdf32115873b6a7a6f4546163e813b615e3b9c936c8cfc135b9170d. 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/QZES62437222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5affb89f2d9eb1220f6d9b14442caa4d747712c4a1a15f713bd415851cdb429. 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/QZES52436510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081c19fcbe198d4841d5c5ff63fb2af1b6817fb041efd7e0faf07c550cd51a9b. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZTAS2354541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe59fed099fe0caca6d0638b06dc110678509df0b119c257f0b06f3b1ca120255. 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/QZTAS2354542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x395f434f98befd903ac02399b641fc8f863cc8aee49cd727251293bb4839072f. 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/QZK6J2348264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78b55f457e1923e833a47ac41bed0bbef106917a2aa7e32e766ed4f792681a51. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/QZMEN2244418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x395f434f98befd903ac02399b641fc8f863cc8aee49cd727251293bb4839072f. 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/QZK6J2348264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x021e868b5f2aca53ef1b27e0d117230ee3eb068dbb0052d79c10c732ffcca0ac. 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/QZHNB2273411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdccbb955960fc98e27df5c9aaa971e46c5b68850b6903c3de56342049d6e4e8e. 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/QZMER2187039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d96abff802465af31f5207b246f5dd32e898f022c4787c416542bc468a69779. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/QZMER2187037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b7325ddcdfb0a6c506f84cbeab7e8f36307fb0a1b782f1ecb25a6546e38b5f. 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/QZHN82128780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fcad14f80d6dda5f02607240faca8e9b4c4d57f2d61cd1e41faf85114993da0. 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/QZHN62191276.