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 0x2cf4ce11d8c0a02927a036b648f5b91d4a2517817334453b2bb576d1df509e59. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8f544e8d-2817-458f-9233-9f4638b708dc.json and https://artists.proofprofile.net/proofs/artist/8f544e8d-2817-458f-9233-9f4638b708dc.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 0xf7cad35b22607a245af935b8da95e7370f57355c53e75c514cc704438a2f7a17. 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/USA4N1200505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a7f8cd9bf71592fe71e9122e277cce668d19490587799cb3f18a7ce0c01645. 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/USA4N1300875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2bf8234cf25d14adc8a088868f5afc031125cf2474ee80e1c89e758c63a9cc7. 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/USA4N1300876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed609a0265f8093c68dd336fccfd4f2e7444567a7bedbeed5d8ad7aae3fa2375. 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/USA4N1300877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e91c1ccfa7c035fece842b4eb9d1c593f0f61b043ddfb5e669cf07efeffefce. 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/USA4N1300878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac806eb0a17d2d3968d7f73750f4755a205b5a86c1299cc2800f065ae35bedd. 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/USA4N1300879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe8456143cfac96e4cb93a417f98468b2bc9a07087bd5b87c991cc5863bb7a15. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-16T13:53:26Z), 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/USA4N1200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf337095fe77ce407f41ca59180b9c1d2e7b0b02e4abf3bc72755121510d08e9d. 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/USA4N1300880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe99f5c257967fe38ed7e21e82f31badcf9d175643c637539c9b95702e1a79d7f. 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/USA4N1300890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8efb5efa6a62b3174354cc2215181a50cde3c75a69f39b4a11366a6588ee5ce4. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-16T13:57:47Z), 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/USA4N1200555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f38ee8c6bdbbf44fa3d6761cd5c9b605618ef479f9a04a4d8715bb17c3b7c36. 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/USA4N1300894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671820442a0951335cf09226aaf681fed5600e1949454021aaff9a2532557264. 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/USA4N1300895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad54599a474fc7c36addc2ee2e5a8ad564d4fefb2b27f3862be30abebc9fbb5c. 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/USA4N1300896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42ea62c68876c3137a200744a1e574e016e84ce135c9ad40afb8ef16658be31f. 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/USA4N1300897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e54a03d4653a6427d3b7570be75f80b86dbe2b00a5f0723b1eded39a812d3e. 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/USA4N1300900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b192ffa5a6b4a399bede2fcfbb555a4ce741c563da75c165a1213573047b0d. 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/USA4N1300904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ddd570f71f3b6daf491b33e69337fcc8c9b19a5ed0b094b72cbdf642f483b8e. 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/USA4N1300907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b4656ecd922674e970f52ee62c546d9f46c02c2f1d62dfec07e4a9054ef352. 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/USA4N1300908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f14d300b8911785de034f5ea2d1e42e699a595ceaea11e5f915d26fdd5caa7. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USA4N1300910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ae96a93f94c3f3f4b1e3260a672d87d68c96ab83f4f3dee0c7cdaaad874d8d. 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/USA4N1200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e8392f11746e3b8e6103fffaf712fa8910b409bcb2afb06c8eb745539a9350. 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/USA4N1200537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6119e508684c8829f967a42c9b7d0f4b1a09d2195767f0260a4f5b8ad88505dc. 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/USA4N1200747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x720b86980ff278e973c3785a2eceb956cdc84691f9c738cad745e042b5f75394. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/USA4N1200743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f84fe2c12fc2401a33a1d408646383b3635f552a2b659d510b39cb84573a2a. 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/USA4N1201016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0762a41b10bc19707fc56b93ff1d46a7493200254d8a234731f031f278288acf. 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/USA4N1200749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2993439f563ca7a160dd582714f7c5f8d4c61abc97d1bd1c344fdb6ad7dc14. 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/USA4N1200561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3f29229e9cb68c18a8f894cfff65e6fa50dd2e1be71a982e15e7003c4c9402. 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/USA4N1200041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf31b9a4f5608e7d76a75a1979ba56787b3559a3fddbf1ce655d74a8836a9815e. 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/USA4N1200684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc707c821562e940f367530f09375d25cf870655935d64a2d0bc0ca1732f028. 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/USA4N1200495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70dd37510fe01fb639b4e511c323932d57789ab08fe65c7ec418e1af42b573f4. 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/USA4N1200144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd7f2f0944b85eb99a777384b895e5f0e942fd56c176e7e43a6b487e5d81163. 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/USA4N1200677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a8a9eaeedb998de81f7541dd909eb8dee7f9c0a4b67c83b3ae44abf0c8778d. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/USA4N1200716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a2999b317af527857db5b1949895a3a8ee2fca680cff728e72a506759ecabb. 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/USA4N1200938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e9dcd1cffe51d38a722ac4c8952b83b5cb6a68bc1e8b6c7d75b1456ad3a2fb. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USA4N1200811.