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 0x4ebfff75b4a1c6880c19723f0c6da1fd0daabd44bc3369faf1e73d0b5770dd34. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4b4bbab3-16f7-44cc-9334-655249fcdc0e.json and https://artists.proofprofile.net/proofs/artist/4b4bbab3-16f7-44cc-9334-655249fcdc0e.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 0x814c78d714767abe85a70902824a4bf8cd9498b0aeb546ac07163dfb0fed3ff6. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/QZMER2524580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb359adbc73edec4025a304f51668e9c0b84ac770ca91e17df487ccda2ceb0e. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:10:15Z), 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/QZMER2506793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd3384c988c20357490e2ecc41bf23185e5b06689b4ee13e8349beaafa5d127. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QZMER2504407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc534edb7d0745b7dd3a342c1e819c2020e30fbb9993f8dbb717e384c9dd12964. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:32:50Z), 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/QZMER2506798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874fecc0865dce483dfb076f993bfd7a0aff15ec2edcfb43a4d6c5469b016d8d. 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/QZMER2506806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294779cde2a3691c2e8850398bc524519255a144ff9fec26910fed4e88170cf7. 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/QZMER2524579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbca0457824003307f9c7523218ea3e37249c98feaf289e931b8eed4e03f5401. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:43:06Z), 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/QZMER2506803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f9c928b038d579157ed21fe217247b75ed57deaacff281ba6e89db9bda79c7e. 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/QZMER2516515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3f6420dc8e838b1a59efebb6ecd9309d086c5c734c75cc9738c2fe99b305a4. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:04:17Z), 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/QZMER2516516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34592f0d7d2f3e63957a43ef2008b7bdc73d4672eea30dda2dae483af011c396. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZMER2516517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafad0ab5f7c3eedeeda53159608af5d2638c89b27f4407a4306fb14cbd669a96. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T04:57:03Z), 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/QZMER2516518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca2cee9e011f1b62fff577f4a8a0cd94294770ad74835a478c3ba7ed5466c00. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZMER2516519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71d70c1511b9fa1e02d2ec691ccabc424389ae1aaee5cf46234f4aa8f67a61e. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:40:27Z), 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/QZMER2516520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f3aef4426b8833abe41e2aa606f599f57d0cfcbe4ac5135ae4e15b903d2d3b. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QZMER2516521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4dacda3a6d93121b657c5774d5145da55361cb1ed4411f6c400a9842cbd0e8. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZMER2516522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f356d50868a9033c62e45132f44c13e5b5b32db3df30fb2a3ffc4e33ad2ef4. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:06:27Z), 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/QZMER2516523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x016bb1958896ccccedcca6ec88602594c8f2abdfd9834f4457608a0f868a65b9. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:26:22Z), 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/QZMER2516524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18cadd18254a7d12f6bfb418145cddc2cbb56ac9d3f86167a5c93cf23fefa4c. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZMER2516526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa38918421462b51efc7a97ec46e7228fb0199ac84225968f490aca56e11916c. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZMER2516527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880af556887ad9fb80f3f041d90c4e3560e8ef810cd4eefc8e16e537b3892403. 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/QZMER2516528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5a742c31fee7978badcc9b1047edf6469dd598636f42d0de51636a6b6e69dd. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:34:48Z), 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/QZMER2501084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6af2857b69690a9fff735934a566205d6718f8ce9ebfda3e020e1f5fe535b73. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T11:02:41Z), 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/QZMER2501144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0835b41dd14ed032e3dcd297c63e488502208386c018bc4f605d3d04acf22c29. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/QZMER2501090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3fc3c94191252672e7aeacb30934f6dcc8067404dc4cb444c5902efacb81750. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:52:55Z), 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/QZMER2501107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260e9cf8ba4726477a8206392b40036b0fb2452ef27b49e2a44e2c0eb5fb02a1. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZMER2501085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49791c94e0a222dfd6f374d07709bd4560776ef591582bc4e472e70d9b5b649d. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:23:40Z), 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/QZMER2587891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679141341bbd840d613449505ab76610e84da82c463b03c822cc8b754c2d0191. 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/QZMER2586135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd9570f08fc33cb042ae6fa0b2de94c7ab1ac97272b31b546b3b962c61f36fb. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:57:20Z), 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/QZMER2501145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580a0b20a47b43b4fc5f26a9fc57c2d048c64c02c6a09a5050dfda9905a24d48. 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/QZNWV2513060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x071c14d72153d9357b07a947bdc37729079ed3aeb282fc7d8289b6cecbcb8094. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZTAW2550533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac8cd47261e737c54d04a511332a9be6b34f3687536a612dff2234af577fc02. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZTAW2550534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66cec8ebf458ed2dfab217fcd174bfd9081a4a70a96e13f34c2deed994194f7a. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZTAW2550540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb556b14c87eabb20f4e33a9f9ad9c976e9b35df8047f9ecc14856867687932b8. 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/QZTAW2550550.