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 0x6fec3cd69f95ef3496c8b1e46c365accb0fdc3c744703bb99b6ab02e3a96f03d. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/14d11791-9a3f-4d6e-b406-abc727869659.json and https://artists.proofprofile.net/proofs/artist/14d11791-9a3f-4d6e-b406-abc727869659.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 0xce0f1647a302c0ead54e08d9dc6807725eddecebb89a5f294d96778834aaa98d. 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/BCMUI2300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5577b6ece3dc6901a42dee452ecba4b313e853121aff6d5e5f05a6139e2ce3bf. 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/QZHZ41939338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c687991fdff4bed000002a71fdb2860994d763702effc28cc8013cad19f17c. 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/QZNJV2005296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fdb18aa1036678ddd01403df871e32c50493f5b78ae68f76c3b7a54f29d1ff8. 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/BC2GB2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9ee77ae1f626d8b7c30f1a428f8e40501f21c6ec301ff1a134e61d909b1b1c. 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/BC2GB2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f1d6b2f0fd3bca8eb711492637a39599026a23f640a7caa0ecd8251b357e2e. 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/QZWV32460407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca63adf35698b2851d6ce7eefb1daf1c7cb12e97fa5177a11b1b9ade08069e3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BC8PH2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5523d4b4d1d006fad18031ea522928b958688acfb19679c2c0d042ef6a918244. 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/BC8PH2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79f4ba9ef8bfee30ab76e091e495aa9b58f05c16740b403232823474177610f. 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/BC8PH2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5262358fad29c0090f94d209617a882771a48fa66f37edbccf046db28bfe57c6. 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/BC8PH2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d07215ea11e7365d4cf6f4a1b1afab0fdbf294c6b1d55d377f5a98836cf1de. 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/BC4KR2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x992ad79d1a2227fd55faf63624c8d29229a385935df924003755162c2b69b2e8. 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/BC8PH2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd6a2be0bdb8408506a026e1f80fa988a2f25d1ef372f67657c2cd3cb5c28b0. 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/BC8PH2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc47de06e2ad92a5f6f33a668d25430e83f729be9f9e7faf040cea24877ae16ea. 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/BC8PH2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3779e90a77a50771e1f651c60dafbce94a0b7a5d5aa0f0d9742307202bf643a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BC8PH2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7bd72323bd6643fa9da5f9780b8ff1c004d59da3f12fb567203e20755fb047. 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/QZNJV2376110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d0919031f8c6c5eb8d7050bbeefdf86e7abf367c46db9daba3da0fc9c72bf4. 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/QZGLM2276331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938c1ebc0da00e31dd3c7cdee92fe62e485781f0ff8e0bfb2ad609f321f7e321. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BXIV82155799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cbe02c2c8abbd080fbef162c8312dbb51831c6d4a0a2e8f101c424cc19695b3. 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/QZHZ32077690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a64cfe7f081a718ea63e438170704d3a824fe451d50acd318cc8be5b00b9a59. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHZ32077691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d5cdc45ca3017079a453703126ec92a94670100fd1cb6234cb582a78ea11373. 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/QZHZ32077692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a5fc8b89095d06030dc0be8a0d410047126244f11610b1031a13a78aa8ba1d4. 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/QZHZ32077693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b0485c1db4ac75ca42f22c0f0de5c20583e037edaee832ef28d0237e6b7dd19. 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/QZHZ32077694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf41f2125aed07b67e94a84d634501227d1bbdb5fe4a20b01c8a22f1fcdb1d2. 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/QZGLM2071384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc651bf14a55e1fcfcceaa754148c1aba9b70a1e58f879511aa55c9728e1a0df. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHZ41954395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bbbd1a96d26bce6a49a4cf1eb36c11fe62c46d219345beed2dc6f70a55e2208. 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/BCIOS2400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c79575fc7d9d1ac1f112928eb50f936032e6ba737a820009aad37f1b30fb82. 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/BCIOS2400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26e7150784d2908f125d6829d6a1a2e3b260a4227fdf7d73679fc1b38dd9b71. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BCIOS2400047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63be3b3489e7570056902b3f1e1bfeece577d832c56e1929f4b48d669751d5bd. 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/BCIOS2400041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x727d8161c32fefdfec1de1f077527c0dbb3bec3f31fc3bc7cc2e4f44a7cf066c. 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/BXIKW2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c695d857e9082d631d2075d44209bfb7dcdc45821cb75591116eb9265d68ba. 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/BXIKW2500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2438e6fca48bd00b594838482c5170a8cc24c84681dd53dae3ce51ebe13a587. 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/BXIKW2500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb01b71d11ee1301f293cf9203a347ec473c67f03e90026b49aea6730180e77ff. 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/BXIKW2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x191a689f26376a3add3365b13f6f657daf15816987321b0bb121a13c28675ef7. 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/BXIKW2500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd48f1f67fbaae8289ae8a636c7efa085ef1fdbd13aa5989e2c3595c9e23257. 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/BXIKW2500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa98f9191c8f44acdb1387ee066949513e7d5c3e5352f91bdd62e11934d385d0c. 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/BXXHJ2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa115cf0d1e4d970a70238e720bbece3019cc24ce42f6b85e695035db17ab35f. 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/QZZ8B2439420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb01b71d11ee1301f293cf9203a347ec473c67f03e90026b49aea6730180e77ff. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BXIKW2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e7a4095d42b34ad5f5e2cfee87a4b2b8bc7562d12fcd37c4d6a767dc3e7cae. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BC8PH2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x052abf3f269ba57b4504ce3bac6964124c57a203343b8e04396f6eed974d4b1b. 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/BC8PH2400003.