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 0x403f8bd8bf8c5720d3c92a9c595311fadae527ceb9144083a9efc2849eb81004. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c4bfa8b9-2193-4ed8-bb83-e5db21f64392.json and https://artists.proofprofile.net/proofs/artist/c4bfa8b9-2193-4ed8-bb83-e5db21f64392.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 0xefc0a3af9acbcb0cfa9041185b86c3299e73aa219b3fd04222fc4a15f47e6805. 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/QZRP52187616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3059288d6a3013f6d6ebb509e37ca62ab3d58092753a37524a3e4f9b39b819dc. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:27:11Z), 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/QZRP52187617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f73fa6c230b28c48399ed2ec72c1b8edeba9964e3ed5e138963d01e6a773b4f. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZDA52299699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e7104e9a21e328a64a5aaac1e93935de043f508dc1fc72efa8d4fe0dd6a0d1. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZDA52299700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7e212d9204386188b11c1e06008e19a6c3ee93889fc74b5e691d7d3283142a. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:40:29Z), 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/QZK6N2241641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5886065b4975c47ade5da301740f29a17a27af3ae3d61c284ef8d57fa90278. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZK6G2294433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f227d4518bac5b8f05c034a028f7dbbf354be27ec06bb8c34876bb056cfda8. 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/QZNWS2239149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x705379df340890a8bd19648f2a1240c3968840bc7189e55f8029e199826bad45. 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/QZNWS2239151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f1c00f94826f4c7998ce840d241c634d1068cca5012e0ae0df4231a4a8cd513. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/TCAHK2330944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90df96060e2c1c140463a2c7cc32fd05dd049dd2f19d62f6f4463f73ae25fef1. 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/QZNWU2350206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dea0ab4e04db9461c8878e167b6c51a29174004fd3403cd057d9906cadc3217. 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/QZNWU2350208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc0e861c9219128027ab17e32af1c0cc5309f171a0181866e74fb24fec9d47b. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/QZNWU2350209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3222fa2bfa04123c64079ba5dfc0057834103f312c241eefbdbec654d9bb6532. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:44:52Z), 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/QZFYX2210031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f227d4518bac5b8f05c034a028f7dbbf354be27ec06bb8c34876bb056cfda8. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZNWS2239149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x586f73e5c750cac068c475df5bd6b906f8e7604903a92e94e4f9ee31ae42b80e. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/QZNWU2350210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18645e60ccf7a566b05cf9e45b231bcb2033a0048e82afcff56ccef1a57a2354. 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/QZNWX2447720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b524c830c1aaa873de35a8626daf61c19d072dd62b7b17ebbe1d5074d815a6d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZTAX2474191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c973f4109b037c77cd32e02a464426296433ca09d6771e7d7305e9531127e4. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZTBE2402290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b524c830c1aaa873de35a8626daf61c19d072dd62b7b17ebbe1d5074d815a6d. 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/QZTAX2474191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ddb910237ec936c5de6a13083a570de10599bda65be89642f45d072c0c96579. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:10:08Z), 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/QZTBE2402293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd66749d842f45a7d7fa0e5af2298946bf896773b32d05304650ecbf77831be1b. 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/QZTBE2402294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3bb86a068844193d9a7daee4904b43761be47eeef300598b5d63eee02565974. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZTBE2402295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4736b710f9a09478086c341107f5ca92b8d80c3adb89219d76f3d520678ac9. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:53:31Z), 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/QZTB32460194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a0675323050bf6f62bb2bb32c7038c07ebf76fbc245189d70fb914a760a6fc. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZTBE2402296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6afe81a1b6da276e50c10bd7b8ffac13548b56bb27fedf52298ee6441698e79. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:35:32Z), 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/QZZ7L2463884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07bcf9acb3aa09a00dc1f9dd4d96e7fbd0d3ef4da00d735d8e2b74b9e2d0829. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZWFX2415018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc88b799a17db1bcd78e9a2544abdd1c28c663d52c264be5e0ee6dbbf784eb6d0. 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/QZZ7R2492711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34970e5dd0095d9c13bc6fb495db668c59a0355541755b51495a8683d4bc79f8. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZZ7P2557673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1adbc3aaa369e27de4c5f293a70405a1c1f5c767dc77379e906bf5bebc3af5. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZZ7Q2548059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b464d9a8d07cc4724e34030c31b58e495faf51892939edd6226dc845f9156fc. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QT3F32540708.