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 0x05cadcf57e05fdd783988c2f04f901d6232d59f5b711afe93b33af36ff9987b6. 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/f914d009-beca-46e2-b3bc-679ac682b83f.json and https://artists.proofprofile.net/proofs/artist/f914d009-beca-46e2-b3bc-679ac682b83f.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 0x8d4fef47f63eea59a240db82ad6f8e1a587c2fc681ba131d48658152f75de60a. 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/QZFZ42386779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe05912e91c49fce5ce05d6f15292a7b1e6304acb1099067597552b70e542b365. 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/QZFZ42386782.
An Alt Rock Classic From Nineteen Ninety Four - Cal's Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8ef5d88dcae59bfd8697c3d1d7ce5375f185abf240e4b2cef0e2a431237c51. 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/QZFZ42386793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90df7d1fc703b88a9633b790deb93509ab8d62f2fad543f80ad250de104d49dd. 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/QZFZ42248827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc817369952881dad1bb700e076c98d47b4a570bd5d4900c9ccb528eef2b32512. 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/QZNWV2123358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x719540fbb3f5e6e8c5821d34bb7ce7d9224fe5c944adb20dd915975af5c80b08. 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/QZTAT2199753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b0c754c47de6cfdacbe55aa757fbb995b50c2515044787dbde11d2e1265e386. 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/QZFZ42248828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa3f474cc698698bc1e85f9ec62c612b2569bff5904cacb21e93accb618093e. 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/QZFZ42248829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5715895e4baf15775d1e465f5e678b830de9c8cce60b6277a05c2d74ef5a1832. 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/QZFZ42248830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4178526cfbe339a456b4ba371222dc3c02adbc101a7a11920e8ec00dd510db6. 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/QZFZ42248831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11bedeb5cb88da62079a34835d853849876d39beea0d3f985e6cbca0abdcd18b. 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/QZFZ42248832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7455eab84034e40aed3b7c2b3b9a7adfd7e3922d34f6c54eb6476084f87c337e. 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/QZK6N2075779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef10a9013f48d2592798e3bc2fc6ee5318a2bb237ae60edbe4f471db7a2a20a1. 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/QZK6N2075780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d64b26c265d9868f91f1f6e76b3eaefaefc9ae7596cf1c6e99098ee30854d09. 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/QZK6N2075781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadcb4f45be11b39476151f0005e746cf014e55b015bc69c223933257090cc326. 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/QZK6N2075782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1964d736d793be44209283190f593c1dcd82342843c36620a95e4f14a929c06c. 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/QZK6N2075783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae89534e98818e504d8dc533957a30f4b1afde0e00b450c47a86fd72f63b261. 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/QZK6N2075784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed427d3cadafd692bce10c20391461cc2b5c4980d645ffa8a81ad9c7e821cafd. 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/QZK6N2075785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb1875e8f4e851276fe1e6105c2e70738a48a3a782959676bc90e1440646d57. 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/QZK6N2075786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa041053972110c0763282661bec6d638f74ca42404936d7cac16b9b3f2cf2e03. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZK6N2075787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91297a7510f2693cb55fb43435fd227afabeab0483b76aeeaadd1c68070290c4. 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/QZES91925093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b2b05eab571c01297cee6a4479c80da5af0ee8c105f98cd608808bd48f693e5. 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/QZES91925094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e768ee618f042b64216148a49854ff4a0310169a92715e9795b52975b802e0. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T17:37:21Z), 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/QZES91925095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41521ca469c642efdc6e3e87c13b43b6937f229b74439d15d0404e7e08ffce00. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZES91925097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8dba7b0078e5b92d81605b06555dbc05dffebf75411cc9f51c55f60fbfd14e. 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/QZES91925100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff7ff357bbfc8b6cd53b0c96a486dcfd6b0f7a347b3bba5e52a575829c4e8fd. 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/QZHNA2448319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x719540fbb3f5e6e8c5821d34bb7ce7d9224fe5c944adb20dd915975af5c80b08. 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/QZTAT2199753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc817369952881dad1bb700e076c98d47b4a570bd5d4900c9ccb528eef2b32512. 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/QZNWV2123358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d666f5dc5a0944b685938eff8878720d3a19efb201d8b2c30b68bdfce7141b. 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/QZHNA2126507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57283a7c4251b01f857a765c855e2e1fe206016a6a89293ce8e6417d0d97078a. 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/QZFYZ2170180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x005bbe83d796f9e59e0cada8be4b7108324a5abc243a77155ceec2070d188b57. 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/QZHN91913615.