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 0x991b02206a3c7bb7b06d430467e7879a40508cdee0903507b5b591417dece082. 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/a0050627-9194-4a1d-8572-1f0460eb3020.json and https://artists.proofprofile.net/proofs/artist/a0050627-9194-4a1d-8572-1f0460eb3020.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 0x71dcda6b1913082cce42f4915051999d851f8af2c8eef48e056c15dfe0d4e451. 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/DEZC62215078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2d98caafdb3a0cdb3925a0b0d92cb5bee985a5a453e18baca061d919f1e4ca. 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/DEZC62266660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5cebcd7f6549b01d02633a017673501518b474481edd46a7767411a37cab8c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DER411700091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c5495537060135f3aac391a65fedc98a0a10cf6c8fd09b5ad765399fac3cbb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DER411700093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dbe37133a665dc96492c4d71aa3b72dfeea0dd51f6bc3854030b35f51b6317e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DER411700096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x096f899cd1be1870a095bf174041fa541704e432580448ef8c82c76b5ec8a2bf. 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/DER411700098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e9b611c7f8b2f0723d7c80e124defcfcf7023c266882fc7e9860d69b9746c4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DER411700103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb519d029ba706c98277ee69807d3b9d23bc3cf38b389e07006f52dd83fdeeee. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRX201525340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac16161f09578aa71180e10549a9b24787333269fd3965d6492c1039f9be2c93. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEBL60367607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999f595c935ee2915b3eba9543054a4fcde7e287d92db833e9d9d847421b3141. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEBL60367615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d1a3050c4c5f357237fb6012da699388e4bd63a99f5d71099b823c1a9ce586. 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/DEZC62573269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7fbd1a2843e79adea5ca827dc35f9c4b316898369b8b08ebfcfe724d0e54aed. 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/QZFYZ2532357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf7d3175fdb2f015e26789e8ad64314a1f71b8050bc18f137797ce89d52a6d1. 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/QZWFF2464492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80f8c45b5501ab6e5206690332cd515962b9510e66ae5ab6bc109bb97210a72. 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/QZTB32492789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa1e1317ddc71fc4d9c4a28810d5092a3afa7710518c0b63df28d01a7f21761d. 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/DEZC62437122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb06e232dd78f3e36611c775d91f90aca9d3a607e0512ca427684e9b19416b87b. 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/DEZC62411185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de2a68feff5d0f457d7c488f46b1b13f9c7f370ad9ace835df377385d6b59b8. 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/DEZC62498556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ba136e5a07dc31339e1f9581461be8d58e749ad1a2514c70ae1c0303acf193. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEZC62388068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa84ed217316b463b0b638bbebe29bdf9e38aaa2b1d9437da4f495d5a3e91a6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEZC62379851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0413f7486c7c585bf5e10a6430f29892af952412f3b334c7f021431e506372. 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/QZTB52341007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf209c1e2ac55128a1cf77b8edbf40549a5ef736b736e0a35aa50dfe7748ab063. 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/QZTAZ2382040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5963450adfae89c2b45087d321d7c2014e697cd1e640c7c3af2ec68719eac639. 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/QZTAY2309489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6c0779b6789e81fe381a5f3e7c56629cfbaa25a4341c2cb53708eb0f419af9. 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/DEZC62340770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f09c036c77d50b7e79caa40dd7f7d3d4da3e5cb496150085b30deebe65d0e31. 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/DEZC62336793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c2515a600144a0f7decd2e230fc7442c33f14fbd2b3f4d7fcf73c5c23753d2. 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/DEZC62335192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093d52c0d0ec164c730d455de0a8ccdff44fea49c1eaa1b6963b8d0edb15e82f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEZC62328091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c2515a600144a0f7decd2e230fc7442c33f14fbd2b3f4d7fcf73c5c23753d2. 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/DEZC62335192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093d52c0d0ec164c730d455de0a8ccdff44fea49c1eaa1b6963b8d0edb15e82f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEZC62328091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093d52c0d0ec164c730d455de0a8ccdff44fea49c1eaa1b6963b8d0edb15e82f. 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/DEZC62328091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa417ad6157620d3d39c7c7c44194e13bc20bb022cb69d9332f85264374b169f5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEZC62271757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2d98caafdb3a0cdb3925a0b0d92cb5bee985a5a453e18baca061d919f1e4ca. 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/DEZC62266660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa00d6e6864b222e9dfeff86eb55ef16c8ff8385b56c4ef029e4c18db93f9110. 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/DEZC62264105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4303e2d3e6baeb8d93b6287018ff97eff34dfbbf7fe5d8d1cd3e7c19b186c6d. 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/DELJ81963383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f47cb9a66ccc62ade1d17895a4cee1022c62ccc54db3a059f438f627b134814. 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/DELJ81812294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabcb27cb664ee08d2be523bcd9180700632db7624099d32fa892f635857046f6. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/DER411094716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f531f8ad9409bb64d5600bc54cfd2c9ff47bb468826bd22b2b29a26582b8e2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DER411094717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f56a3d366c0833cf6ca25dbc0a4c64b0653ba30463dfa7d45e4eed9d1048d9c. 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/DELJ81753757.