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 0x13ce29db26405ee9419851d1afa19f87d339f7b624a2a27eb6e4792393537b08. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c811ed58-2163-4fd4-b722-90783e5634af.json and https://artists.proofprofile.net/proofs/artist/c811ed58-2163-4fd4-b722-90783e5634af.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 0xb0dc4154ae9991515a5bae0639d3ab0a87e6568b39f58178cebb0c833a2e342b. 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/QZNWQ2453304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b2a204c1629b28c18c4344f0c633996d7fdf2a5cf118f122e0b34f12aace02. 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/QZNWQ2450998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f7d424e24a35bb3c0c3a420b8deae849e5cde87d273bf4032508654b29542a. 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/QZNWQ2453316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a653e53bb9ccc274b4fa270c515382f72e47cd4ce5889c0ef7d63263b0bb46. 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/QZNWQ2400546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfee9fdce16349923751f0c468778a7534e3eb07a71a86b42abdf770a47a4ebe. 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/QZNWQ2401594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b832c43be6fa67af8078ecf180a18feeb302d709b78cf8493890276238532ef. 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/QZNWQ2401600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff5d091ca20db0e094cdafc4dc0defba97de60dc1d4c6278310893f3c97a952. 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/QZNWQ2401599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f189521f8363632c54dcf44c568221519b7c5653d41252b634bc9e9e3ff50ba. 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/QZPLR2340890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd45e45a56e7c05054f08ddeb8313b65789b98f835eca8f3247e7c3c85ae89bc3. 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/QZHN62382124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e3dfe8ce2522c6b0dbd0c65a9107c736f2ac5e66ebff1bd92d20314dfdc58fc. 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/QZFZ72355392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85dc747378af8905c507e40f42443f5db3100227a0ed4f9db2b2289de53c7046. 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/QZPLS2249728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99025bbeff678593c3d02c64d23732f71d262306cf8df76018e41e5cc98314e8. 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/QZMEP2274258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12753846a04d873d5211dd3de34f20b9e1dd924eadc23f766edd208988b02737. 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/QZDA82207860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67958c28ce966cb978e6cbd01aa5d2c9186b1091225b236cd169f69135167936. 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/QZDA42273384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a530f61b3e703a1bef3534954f9bb297257c721127fe2b66186b19d16b892b0. 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/QZFZ72222979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x772b14c78b5017d9427eecafe9eedf936354ac73824821a235dd0717018b046a. 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/QZDA42202929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9f6d2392092fd18bc1161fc562a13b969340e508ac9813aaddfce6b60ee5b5. 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/QZFZ72289946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa46c8f70482d17d8da0381ee854fd715881a7da3be2a6201df4cf7391d05b0. 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/QZFZ72222589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0febe1830aaf62c985ad49d7de6239a25609d1adc5c3c2293bc3e11bebfd47e3. 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/QZTPX2431538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1bc58a4b2bfe13205a66c5ae7993155b26bb0705cb1036a7c1433c38ee78a3a. 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/QZTPX2431539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a119332d69ec8c80b6a6674b16249a7c19376593e027db17c2eefbeadac24fb. 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/QZTPX2431540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x277d5031eb6def54a374dc902bac121a9a695e539f44f7d982b3f0ae72e78506. 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/QZTPX2431541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5339fce03942b9127d523ec5dbaad70ccf86899469be90735cd4d2aec35363. 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/QZTPX2431542.