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 0xd80eb00bb0d9449fabbaf73e54624a1972e258e38c196580d73beab09176869a. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/05deb988-3019-4c12-a303-5165a300764c.json and https://artists.proofprofile.net/proofs/artist/05deb988-3019-4c12-a303-5165a300764c.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 0x09048ed7125d76225f832ceffc38e95fafe924b965ded7a100db0f91a04a2ceb. 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/CAA0Q1622321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7978b6aaac3e9dbae2f31dc3d9cb2799acf757fa761d237ff039ce235de7986. 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/CAA0Q1622332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff2dfc1ca5d548f746c6043c2939c5ccc6c03ec7cf49e857352f04806740428. 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/CAA0Q1622322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4abd69ed3716a3c4e252c4d3636e2efb4b31e5172a20aad2e8c7ee67dbaf38e7. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/CAA0Q1622333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x442cc87bc26da6d58b115a7bedd171b42efef4f72ea83fd987adc8cf79f7a023. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CAA0Q1622323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c147fc71921c6837dbe8cfafcf274a0f5493c721ba78f14543f0d8d8610b879. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/CAA0Q1622334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5b11462b2017c42f30efb253e7d6e379267535dc79f75e761500f653f93c13. 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/CAA0Q1622335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff46879e2bf245a8bd9b61a42b0e62a407dc3c1cb7cb9aa496dd98b933e8e01. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/CAA0Q1622325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe591a9de24f5369e243355cef2d94e11e3b7bface5f98f93ea2fefc791e533dd. 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/CAA0Q1622326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe61609b9fd6eb0589ecea95863efbf7a3d875095fee3b83f8c0e91b8da929cb. 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/CAA0Q1622337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa44dff0219adb51ef9eb2d966a3af8e818118b8fbbc8705cad1745815e387c79. 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/CAA0Q1622327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x998e0fd01254e228c49c5b35e7adc01bc9ca6c9f5cf542879c26fc9fec08d7ec. 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/CAA0Q1622338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1b6e6ef086d7e276c244fca1045227bd8b5f4e2c017c9cb8455fea93ceb645. 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/CAA0Q1622328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8749ea2c99c524161692543f7f8fbf8f930e859b5ec6b04b0c35cab0b7684f7b. 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/CAA0Q1622329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x479020ce186969865b1aac69224f393ff984fba5a2191e44cfaa9576537dd558. 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/CAA0Q1632341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d0c73234c98b2f97d76a47546a2d76e935c0d46cd3affc7e44f6a0274fbe62. 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/CAA0Q1632342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9eb69dc67586ec04621ba3091fcec9325cf0c9557d2bd87772f2a5d9051b507. 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/CAA0Q1632343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0964357142c0f72e06c3f2ced54b3358ad002f2be2ad9d9e83a115f04775d186. 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/CAA0Q1632344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cbf82f2600d9ae2d61fc5b2a7c66b7f27d8b14a0c98fdffe5d5cd040932d5ea. 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/CAA0Q1632345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb738b0a802302ce5d0d32e015622c191839e0023e607f47738a91d6af3b48fd. 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/CAA0Q1632346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de4fb9177b36f4750dd6b7cfee59b10264197b7dc94a1e767f6a13ab0752bb8. 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/CAA0Q1632347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00dd272759c6e92d5e627e4e3713a857045031d263d3a69b0e821929cf869271. 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/CAA0Q1632348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24b22e256e5c72c5f15c3cd24a6847ee023f06e237f636f03111ab40e7fb93b. 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/CAA0Q1632349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x471785927348ed30b0796b4935644b529704a820367b39225ebe23b776b47365. 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/CAA0Q1632350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a4d68e70b7ae74e1ccd917bd53f07b3b787ab37a3b7325180b7c308d1842f6. 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/CAA0Q1632351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7186a47a126358b941a2ea367ade5e9cebc325df80a9a655b67a47fb5533a911. 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/CAA0Q1612301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82020ec5dc2a6219ff4b40a18268abd8a685f5d281c27dabf11534b2ff8d2c69. 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/CAA0Q1612302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29debcf21921e436c387de08333812fdb29e5f73d6158d0d2c8cb5e09cf8777f. 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/CAA0Q1612303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b2c67b455667cbab0516918658b14af43844612beaa7c1b0125ebb1e63502b. 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/CAA0Q1612304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f37245337080307148d01be7a882c223e2c25b0cb9ee2929b6c0829a3899d10. 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/CAA0Q1612305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6c17d7fc022e50233cdb4acbda32f6975e4cdea51a15e2789efd82cae9983f. 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/CAA0Q1612306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d6eeaddce666c9dc546afd8e8ddf80fb0bd7d66261228aa3dd11005813eb254. 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/CAA0Q1612307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4798d118f2f500c9ce987faf549e5bda00989beb6d5bf50a900b9f8468bf17. 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/CAA0Q1612308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x570cfef9aa872cc68244f771a9deed880c6cd7668fb0ba1e51017f9ad350e112. 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/CAA0Q1612309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4208c02881d502aa8cfa2008fadb92bda821b11283173e38f376fff5cbb809e. 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/CAA0Q1612341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74908ebdf1edbbf124a84b9d5b30af09200564729351c98b7d2d1b5a32fa5435. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/CAA0Q1612344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa270979af405ca2ae75d2b0bad4fdfc6e336a4eff5cabd9423bbc70d51e7a0bc. 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/CAA0Q1612345.