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 0x1c2619906918d748b1884813af4b6220c10272651ce4991c19c5abd6a3141bd3. 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/c17554d8-017f-426c-bbb4-10daac949af3.json and https://artists.proofprofile.net/proofs/artist/c17554d8-017f-426c-bbb4-10daac949af3.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 0x05e1fef0f79411d2c063bd9054d0bdfeb32640378d22cfe35a509595d186ea50. 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/QZWFJ2319438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81abfcfba63eefdb3413bdfd91712cb4ffc9f81c81f98798440b55138e3e296. 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/QZGLS2344586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb254c9698c58d7ec7e3b032963d5a0cdf1d90ca8b0ab30c53c7c4babfaf16250. 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/QZNJX2466192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe51577c342028da73bf7fcef855a757223e1d3ccd4fc3b724dac3576b4ec903. 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/QZNJW2417255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e46664f6d342a511c09e560cf9ca278cca2e090a5a7d819e307a73eaad8911. 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/QZNJW2410066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x675ebb53442a0a5b4eb5ac27b718a8d1d27de33dfffcc0685fbd17a99a6d7549. 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/QZNJV2488010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa380353b565f2f46256bb05f26597f1f717efc54f90eadd598cb1f476ae79c57. 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/QZNJV2454402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf724e88808f8199d878c9caf49b5a70497d9945a53e40a9cddccbf9ac2926e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZMZ92472240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe652511d353ca7a2e1588b582c87c6a983a4309f98f2e9fb1f9d366d297269. 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/QZMZ92419186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3cf7b77cd8f8f8cb09a6f9936925727a3953365b494233d86d6cd7c390fe6b9. 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/QZMZ92419181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca2d6431674b3943d9ab059a2d24553f044ba841849a1a8a5eca739ad9b99c4. 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/QZQAY2499450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8ba1ef247fcefd72f138d3e9445bcd39473dab24d24aeb86b063a0995141e0. 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/QZGLS2420691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae9085d30a855192d9d4273da742b5108678b54d1e8850971417342a35fe81e1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZGLM2440041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c0bd1b80945f738bdf123e5c485d80549f4fb78c38f4e2ea8581965d1616ab4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZ5AB2476919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec2de8cee7381cdf21fb1f9c97e1ec9fc29d172dbf55f9c41a88ba3cc9ebfb6. 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/QZ5AB2438848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad7ec6dbe94443a37a2aa1b1aa9633b34259aa152cb32a4719ad0ca0a0be3db. 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/US7VG2434170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f8dc1eed8c9f8388bb78b2e018f1361a4cf70a8bd1e716d0790f9537d6abd1. 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/QZW9M2336999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa922e4728ae7b4ceaf8b7372b823cc43947b49d551da63e9f78207e1be80e577. 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/QZTB62396528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x783584e9df4de4e61ea44d42e3207da399c77a60afed4478a2a7be78eac9dad3. 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/QZW9L2386453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca686fbcaeba1745a9d5cf8c0517f3b1f4b250aa918ad2639e852ae609ed0054. 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/QZW9M2300139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58b09a3f5a4e96c84af1cec97400aff0d40081f027e41866fb6e892c3e24a3d. 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/QZW9K2352500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe328315a5fce75115383eb6f8dd3cbaa11a934f05236c60e33899531ebf1889c. 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/QZWV32386982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8669f1afbf93b9e0f94d9ac00579336db2f945c41976744acc4e17ed4fcb849f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZNJV2456659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4709a3c5603c60141531efc140d57c9e5e091ec28de9e4a770fb735c2d413a88. 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/QZKDT2300612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe113fb6973e406cbde48f482ec662acb05ed894b01426f90cb42bd7bc3005ed1. 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/QZNJZ2373835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f30cfbceba68a455a03103465de897eb1a721f3cac7b3f680b641fec2dd7f6e. 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/QZKDT2300561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14117d3d0fb0ca88e98c7d845fb7738f09887997cda22809f7a0661809abc44b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZNJZ2310890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eaf554a33d09424f2e840a4811cec915de2161e79918a382417be76ed050247. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZNJY2352598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafde74b03cd499b14538e487df39e812c8f52fdf2abb0d3beb7189880f086b93. 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/QMBZ92341673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff9953ff6fb0b34462bdc1bb4e66cbc126853a2bb7a1636c9ce06c23866ed42. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZNJW2376345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc1c78c1cd2a4fa04156ff4715f418733e60f9a3edaca559669bf1b55197957. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZNJW2308714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17d158947b2f063f6079475381078f314c4a636fa19e0185b749c8fa8d8233e2. 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/QZNJV2358491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b931d5223249f928bc90e13b5a93fabcccf6335f38d532d5a814dc6deea912. 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/QZMZ92365880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bbe7307957d607a6c531439def4b110cc15a61b0ecc62c58578d6b032754603. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBRKQ2326275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7422040cf594ae4d0b68094a8f0a6d7ad2fb5d0436d89cdfe11dab1e6b1b616a. 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/QZQAY2320164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf720abc8607bdbdb0ab151f69416fad34c6a360be6176ac2cac80b020b50ece. 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/AUMEV2312661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63cc07f0bd3577735d33ed9827e3453f0c7698c6b26b9e5ac7e6383aee91c864. 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/QZGLM2310063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56efd6db7cc41d9feccc67323f1cc9336903456e3b0102290ee3581a80066e62. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMDA72266616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57a1bb352913d1ffaa5a2d17b468b6692da4634ced4b2929902866ee74871d4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USA2P2231843.