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 0xf627d94c7c9379661ed557202023795aa37d7ecf507cf655176dd188e0e8a71c. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/66e23cae-70ae-4003-8291-0f57651c902c.json and https://artists.proofprofile.net/proofs/artist/66e23cae-70ae-4003-8291-0f57651c902c.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 0x6b8bd2e5ba66feaceb62da0058443f2ce6c316809650d5be91ba9bb0f067292c. 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/QZWFN2458428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd98100b5f8a473834ae93a5450574ed14bbe219f43287e29d68ba8dd7a25fad7. 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/QZTBB2450661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301011158fbcbfc8a415ce1e7180a1917d1e5d4a9a642592a3d4812a15239adc. 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/QZTB22407947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947e9c35a228af879c940b0ec636aeed3997b824abc4b44b9615f356415dd127. 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/QZTAY2482251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09dc8627a2a0902cb082c5448650c3ab0693083676b11eb7df0ee8251040b67e. 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/QZNWS2406212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f88b66c571dd64753775c396fdc60d2743a8edb466e224aad219287cd0b1665. 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/QZNWS2403365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999a84cd920efae3b0de0794cc5f9728f2f43da2db2127dcf05e5f9b3d2aeed3. 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/QZMEQ2418657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab7a91105af18d8a7274cca715e8e1b48be9f8992ca13567d1c23d043581494. 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/QZK6N2474030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea800a7723843803e9465f854af81d85a22d9cece389df91164304c83c4cbcb9. 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/QZHN82445399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x486caa50b48ea92297655bec0c88e68dce0c7c47ae779f4092f7add8cf6d3747. 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/QZHN62428047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a522ca3b304d994c60b6207c48139c4d8d8a300feb7370b2235f656e2d24ae. 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/QZHN62430239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4ceefd924cb6f5dce59ad73f21f3dde8d5b78bcbb6675bf86f860bee102946. 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/QZTBF2443259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0cb1c062ee2496ed17ed79250e8366108636825b82f8c96c9f30c13d05fd2cf. 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/QZTBF2443258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76abe95b1ea3414adad1948d1b98fb9fc3c9dfce4d5e92ca894c0e1307b12d1b. 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/QZTBF2442132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41161f62acde814b9543e42745f546eec7d2d5bf1db865650044fb0fae4f7e8e. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZWDW2325309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c11e3c88361fd90ea7d551ef0bcf351fdb6efe4d820e0a4e5690519abcb29f. 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/ES75E2201394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccfa7357eee0633c80671651e2f6edab424141281bbe1219df3a1a11be66be5e. 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/ES47E2007439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x328b4d429d775de43373d7015ad2c49206939864b88491bac35471fe35fa1c77. 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/ESA011848653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96045e8b506d70c49cb40d4219e959059a359b1bfae0746f1c3a6d0343184137. 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/ESA011840981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dc14c532d26ca290161437aa3cd02f742bb62b8dcba55e2236a00cf764331b9. 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/ESA011997514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827de4847acfaec9347de155b343fa40ceabc13f6e79b9cbb80aa765a18e44b6. 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/USHM21971185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c42e1688d509152341b0e12f20dcc92cf95fab180563401ab2c38b151264fff. 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/QZNWQ2498848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2dbff13f246a1fc0e0925be7aaeb91fbc5ba924c037a5c777d177e4197ae9e. 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/QZS7J2371977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e0e1cc3f26f86c26d6e377d377cfc4cf5701cf7ba0c47bd4bd2c4fc4cf4430. 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/QZS7J2352976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c803b1caa2b7b209548eacc6da7f646f655707516fe8fd763936b4fcd4d93e. 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/QZS7J2398568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0df10d9b4a0e18e91c115e989b3cfd2f22fe11ef6b914393d5a4ac95a2782bf. 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/QZNJX2164907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4970176ba24ed7b8ab1e002a688323e00135dd26a21838984d6bb8642832dac3. 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/QZNJX2164910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5f5eaa27c0ba3402f2dd72332a27e011a3dd2f5c3e7b36dc3fa44dd15677ef. 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/QZNJX2164914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50bd6bc9803e5ea7b2bc5f0f36fb515dbcbe8ac2e3b3ba7b11a4a155641be2b0. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZK6G2112862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x628538623a3396b3132f2b1b033322fec58dbcd6d6af581763a2714861f1b418. 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/ESA011841100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd449d8aee229a7b180c334a7ecf1b69d34e7396243614f00e0ded67e06eeb1c. 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/ESA011734411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x873ce81de23e9c001ea4d14cc40561aac92e7e4f1e435d3ba1e0a3762b2ffa68. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/ES47E2000065.