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 0x38e5dd07e6e2e640d9c2458ec7240164f8893e21b0748ef38afbbe4b5fe9594f. 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/f32105a8-66e6-447c-9da9-4dc845a55464.json and https://artists.proofprofile.net/proofs/artist/f32105a8-66e6-447c-9da9-4dc845a55464.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 0x04f4c65406feb553881d386ed328e9d7f34be2a8b4787108b83791711b7d59c1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USA2P2435406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58df4e58737c91d36d6814c604888d8cbb7d16032d9d929fca847623dc251668. 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/USA2P2435398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85431fe4d1a251f460652e344c34d67f10785a5c8164624f64de126ea5ed92e7. 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/USA2P2435399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255924ab95321975fca89e09bc0cc908a30d9b13b9a59df71aa1d57e560e2940. 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/USA2P2435404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eff69d53a3846f6120e2960bcce601bb70d8c63f3bd940127b743c790ddeee1. 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/USA2P2435400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63983628a0d00b55a9ce28aea758a471941a4f6e244f550e7110018a40fd1d7. 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/USA2P2435402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25984ce4530b4476508b8bb6fa77081d1b8152374b7629e02a06af76f6fdffeb. 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/USA2P2435401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x819447ba9fa60e5d7c4767e8400bf434472e5cf903299f255de76f268b10dbcb. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USA2P2435403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2374d7b6d3aa0852d62d4aa060558280605e08ca5acdc68894394124b39d453b. 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/USA2P2435405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ad8783bf2869bc93ff14ad2b54690e4c93ce3fd26763686a4f83f99a9a1029. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USA2P2435407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a2fd6e2a40724d2d836d90b82011fe42922726ec7781ee7c20a74e6c295db3b. 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/USA2P2435408.
Puros Corridos Y No Cochadas (2a Tanda) [En Vivo]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d43490d4210122448b50df5c3c9d2daacdf29f8704525f13e480383085c828b. 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/TCAJE2596363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc7a51794fec951cf362289650917c8faebc6bd75594793d45544f99181671ca. 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/TCAJE2596411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26fa47e95ffb62ba3cc134ce84066374aa492e2f777bb8c2bb48579bb17f5c5. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/TCAJE2596445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495b5cf7051c4cba9c809cd39ef05a4115c56673bc1a97989d37032bd4939fb4. 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/TCAJE2596462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd864a753fa09d93a15c1c225d402c65595f57392006881df06e2c4ec4148ac. 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/TCAJE2596496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e2118031ecaeafcf593fcd369a3f1f0701fe6b92516728bbddc090242f4c20f. 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/TCAJE2596531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c7b861cb5458d51f4930e58d959983357e8a834d9df2382e5a09c562580097. 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/TCAJE2596591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb12e395bedf71d563f98bb26ea07f5b4c53464f9bbdecaa9e443f6d652500415. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USA2P2408060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee76b55219152abb82ba2fb8fcb04e0de62b0081c64de8b4a7df18bc391fcd1. 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/USA2P2408061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e9bb7a6333e9f39968904d32f278d4d9eefcbd4917b5a0f5c27a089b8aa4fe2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USA2P2408062.
Puras Pa' pistear (Tercera Tanda) [En Vivo]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a6df9b9a09ae9ccd6484368430a9bd316d5c164ec69af5d88e0b0d1c2eb49e7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USA2P2333808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d7ba3e44d1cc1108270839b36a1d2b3c4ebd19aeaa58dcdfdd33dc8cb1d5e81. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USA2P2333809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8317ea52431b9ba1ac266ebcc97307635c94586dec1d748c1eb5b44a88bc3cbc. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USA2P2333810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b831b26a2d8c2f2a3bc28fe1a06796ad56403873268b6911d282a26cde5cce. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAJC2402147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x949d5b02713f47aee116e99ee8b2012446cca53bf28a2a61bb070c684cc3fb1b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAIZ2492539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1612aa165653c8c1d440d92dec5aaafa6f8feba36216dfdfee6b435380830874. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAIZ2492561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ddee7ad515ebdc827a0a89ce767bc745cf178e4bf95fb3aa7a585300d811a24. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAIZ2492583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee41a06bfe8ee331eca05d9bca3a3c15d9e4ad1d2fc9f1c2c35ecdb84ccedb3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USA2P2441433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf6ce3548358aa46496e8947b908f1ef81efe70399b7132b2eff9358a2da8961. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USA2P2438060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe724a9c1df01b0970c12dd6059ebd81b242d07fcd187eb57f3b5892a21483a69. 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/USA2P2358877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7838aeec0e149633eea6657fee6e8096da598a30a1d87dd1b69f99714b794f4. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USA2P2358878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a51aa46b0c0e0511cdb027628212c6f8bd92a03f267f90b0ba4ba78928fd898. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/USA2P2358876.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9474b4a3495f6e9bb782c25573b31cc1b4acf87fad85b34cbed6ca67b1aa0c36. 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/USA2P2345455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615636026a37feae3e57072e94b7c1fb759de63718d8fb69348a522d3af5fa7a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USA2P2350363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f4b78a96a6413963e329451967583aa0ee0877db5d6ef47dddcd05abdc2ea37. 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/QMSAV1104923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f2d3bea040b706ee26e85302308ed6d40ee03a484a179bbd902c7542d2def0. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/QMSAV1104924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee6272c9b2021c0c6aca3d2f8ce221ee328a51e9ffcbfd812924947848526798. 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/QMSAV1104926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc05df088a2c2d7059b44abfe151b36a90ab50c6a54dff5d4b448b814db2e5ec. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/QMSAV1104925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf77238b86aba1b90c6691f0f672791ecaabb1068817ef0d0765b2de2ed55e2. 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/QZNWV2412712.