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 0xc6783635ced54a707adbc34d0b8ad2c46880c99cfb5a1ac06e5c29ab927816e9. 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/3e0a4331-c38e-4277-8256-d954d580113d.json and https://artists.proofprofile.net/proofs/artist/3e0a4331-c38e-4277-8256-d954d580113d.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 0x1275ac74ff5820e373b951294abe95693cd01fbe6c32a7f7e70a87f8e135a4b3. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/NOWAL0202030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7dac557f840ef008ec3ae94af80de228364240676a727547c3081eb8fda3f6. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/NOWAL0201040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4801ecaa6ff4862d68b26a99c19620473b2f45d87328e852b2f221d488206795. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/NOWAL0202040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98cce1128c1fd0ab37aec5b15710454c724a33978bb11538c0e9108fb87d288a. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/NOWAL0201050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d0b96050e0f8c158fc9926e9c4279c75acd8fd281b6d7e8fe29cdedfafe7a9. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/NOWAL0202060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b40a4ddb0d785c2eac24d060ac1b3b60f8550926e64a1f6560aa49ba1744d85. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/NOWAL0202070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ebed8214a3fe81719d1597cf9263cfc9f7651a4faa18df2deb950339a838c39. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/NOWAL0201080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1824084596bb165ba370b469e5721fd28c11ff8acb3a2784e947fc87675f90bb. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/NOWAL0201090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c0116262bd6b67c4c967ea1e0bd76ea96b6826859f0042dd0f0f7e15c95cf2. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/NOWAL0201100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5115a90f90f1d23cb8ab1cd106898140f97bdf2cb9d9aae0694ecc58fb61b8a. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:56:34Z), 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/NOWAL0202100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809862bf74e5c5ff0a7132633bf777c04a4e6f386c5354ee059c886347e8cb18. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/NOWAL0202120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fe917d56e683c6cdbd74f6a06ee5caa506c1a032d6b68ba7f0b7b8a1ce5b17b. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/NOWAL0201120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162e8335dd365f1f3be8a00bd558ae78cd6fed3fc32ac1f490611bea79fbd3d2. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/NOWAL0201130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x513efac5303775459d43b7467c93755af94c5a867d026ad7454da7f02d1c7a4e. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/NOWAL0201140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f36486b845980fb7cc0c6f3ee20f33a96b9fa9e995e72227cb6565c8634874. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/NOWAL0201150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283f532c2a4c6bbcb74f8183fc07de640d1803372710ceffa1b4d11961d0a95c. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/NOWAL0201160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c1195e88db58b10fa71641d7e21a4fd909d53107b3452d3fbb89b73a49e469. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/NOWAL0202180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80857059ce03ce4010667769b1d75dd42211c7426eed2c12f9aa950db8dea51e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/NOWAL0202190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30df26f7dfa5d00dfa50ffd3bce7ed97041141bd5d4f750f52f60641fea475fe. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:22:53Z), 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/NOWAL0202200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5acca8502c2ebd066efb9d623ad5f7227593bb37d359a282c1f4e1098cf73db5. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/NOWAL0202220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a915234ccc5a9ad1878762bf231a7cb74ab43ebdc1d3350faa0ac12c26563a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NOWAL0202230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaabb800b669ecbcb4384cf3b886204be271d5deaf7afea16e7bf66605490e42e. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/NOWAL0202240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed6bef614f6361a27c3bbbfc78cb1f273907ffcd88e63e68f1442fe17bb5eeed. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/NOWAL0202270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0149cdab85abf17077bb329e7de2f62df7c5e966473b4ccef5ea1f74fe36a1e7. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/NOWAL0202280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0891e13c51974951ea7b3accf9487d3c043936b972e9b416287b9cd2a9a6bcb. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:17:14Z), 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/NOWAL0202320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc1963a8a1142b3be37a8aaa3518982163357411d54550d2400eb85508430857. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:21:22Z), 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/NOWAL0202330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e7c3ffcdc068db99d9ab4a08c7819648930e9542b94cc7f9151a746db49849. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/NOWAL0202350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b282eab1a5b6c4d308b6a5ad503829ed0d5b39b28e7e3ed1c7066880e9c864. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NOWAL0202360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d80528aeeb937494b4d7885dc7aeee2d3cd2802b895510754f62535e870ce31. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/NOWAL0202370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25285ca67b61b45b44eb93e6e78f7076b2a2e9b2038c0b933e01cfe60a252b5c. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/NOWAL0202390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c5f889dee139ff19a7e6f46a312e1ecd2bac60850e38a1c90aee9293eb2ea9. Chain 2 (Bitcoin): anchored in block 958819 (2026-07-20T06:47:02Z), 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/NOX9X3300503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c8ccadcb96799c7d20ec4d7fc9da7e171e4148e9e1d7cbdeb4ef48f6c3fa74. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/NOX9X3300508.
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