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 0x580a981c48a62b2ba2323833983c9be862f5907106e14640438e58bb186082a9. 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/6346b873-109d-485f-90f7-a2c42546a726.json and https://artists.proofprofile.net/proofs/artist/6346b873-109d-485f-90f7-a2c42546a726.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 0x83766edca50e3f8a3ac5217337dfb43fa6a953b44d70283975ad764866ab8efb. 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/QZPLS2159772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b38f4f6940df80a135b5b447e72cf9f3758fa557fc60dab86ce46a398010f11. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZK6K2144153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4dbf9ff2778734ea1ef7cd77750b29fd13715f4fc6bd0560b93f48d6ce62157. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T04:41:37Z), 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/QM6P41471234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22f823b9668734e9ff2b50181f12472439413d4a4a7fea0aedd6b814508c5c48. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZPLS2117046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc58a8b2f3aa59a1e5c90aabdf2e1538bdf23508662f2f0e77c2572a0513cf1. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:57:13Z), 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/IEWGI2333119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef51ac1e4c112f6847e99ca3a5276b3e49afdd10cebf92be70e43b9ef088a28. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/QZHN52116686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135aada3d65a02f393c0d9ca46509356512cc1787cc50e20b5eca46f3caeec88. 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/USA370937406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ff39d70e2abe07401c23202b8a8278151991977b0a06516836e6eee8f1ae24. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USA370937387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3e771347f851cfcc9fd8d74a972b6dc21edf5fdbfbf51274e38a2ce0c242cf. 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/GBLFP2333192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82bacfff5fc3eb296b4effb4b0fa29a8cc39c87a25ace8e25c547617e26839d. 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/USA370937389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5711c05ec5301abfdeb24310d874d78797fecfe0526d75ecad0914be24cad4. 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/QM4TW1529363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5661b65056cd582a6d37791bb44499b87dd66905de96e0a43924c9e54f19664b. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:59:43Z), 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/QZPLS2117051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f1bf3b67d5b2333cc511de24ea48b5e749faaa40b0b0852605fdb8186cd329. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:54:28Z), 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/UKXN22340340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141c5037773b5ea75f61b8ba9efdf2fc1a57c3d6eb9123f93d117c2c3b642924. 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/QZHN52116685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b88d858902f15f6f13ea508553d38bbd84652c1cc983f2bd60db672ae8f85ae. 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/QM4TW1534757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e5a4b131066fb84b3903321757104f41df4a5aca6d1d4d5b2e22e28dbea67db. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:04:01Z), 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/USA370937395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572ed2eaaff2eaf4cd51ca4c9a9784e5c033a7db22ac9d3e925acaa92953ca9e. 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/QZPLR2192945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf31ab996bcf2a40c83b345874caa5b4638095634cfdf214313d987ce0f7ff97. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:38:59Z), 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/QM6P41471136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7be0cbc9ce7080a209069e8bf339b1193923d01eb7c3116f2f742290afc18c7. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USA370937390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc52842b29cab602ccf28425b6eebf445b0b0e646d0aa32307679e8caec6adf. 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/QZNWZ2154095.