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 0xe4ec36ce90642dfef7b7af119c356b8ec4ae4d2d1e1f1f3a14b3e819117674a2. 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/3c012f0e-b937-47a0-8b19-8967c8108802.json and https://artists.proofprofile.net/proofs/artist/3c012f0e-b937-47a0-8b19-8967c8108802.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 0xfe23f0ce8aa5d90a385e0378341d8b903ae865541ad3258a8a9377f9a91a131e. 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/GXBDS2495790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7009d2c73a7ea4c8e0c16b3a406ace2ea765c3d2436f4a25719f4de4488dc1b5. 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/QM6P42414851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae38944b04648d4f39e8b8306666c0af0bb63a45082c8cb7cf89113608c21aa. 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/QM6P42488036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a36100da40429eaf4f39bc3f0529c73e682f854656a5f2431f2f4bc43b67f0f. 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/QZQAY2437732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d1d4c3d0b2b56c6f00ec07d5f1192cfaa8c594c6b2c610d394bae0e3c95722. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QM6P42443629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x705cbb7cabd807dec916507c4fcc30b1fa41fefc789e0771f16831858cf6d816. 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/FR59R2478301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x386c6a982530b4baef91774b3d54b8cce586ff5a2dcc14eb5bd3f3153eb874d1. 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/FR2X42441307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfafacde7850549a3103de7af197427cbc24daf57f658a6cf155d5191c2a92f42. 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/FR10S2440229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc1c6209b49a000405a91ab7cc2e62e3a270c64d884b2b50cbf37e55413338a6. 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/FR10S2402601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x837a5a952594d4baee9d163481e1e09eadf21d85fc0a9bdf54e8c0d51d59d546. 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/DGA0R2325199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1333bad77f66a9ed20f41e3346936cd4434c86fe30dc90db147a946118017db. 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/DGA0R2307930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8376e603eee572e3eba2a4bf3677700eac2b1dd9b8da4bb57b0a13ee156e3a75. 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/DGA0P2310707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb2ec5eaeffdf5d46011d23290a1acb8b7dd8fb3d7f3cd6f1e5c00cc2d7f1084. 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/DGA0L2357881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb72f4a972dbebbe9c77e50573292790323ebd06b6bf7ed2ce7c60c5c29b5618. 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/DGA0L2357879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72bcce6bd480453d1ac955b767cdd02d47413f0ea8f426b5400782956016183. 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/DGA0L2332508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eda503e7b96d48813c0ed3983c9f18ed6bde2f17c320818cd3b73a7e2ea292c. 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/DGA0L2365822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ef6cdcefb3cae621e0e6482b13bbf77e43556c983025347c2c9434fccdcc12. 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/DGA0H2339178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8fb8d2e335424afdcd587b8a9fec9bfbbb232c17cc9e389dc875c7774f5fcc. 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/DGA092377197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9222889abab3b136bdc9ce080aa424a49b165d806e154737e17481d5a5b8e403. 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/DGA082345618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1caa2de5be97e9eea217756278b7f7d00f1da72ad7985c4e130b3b4948ca4e. 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/DGA062315918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464e0a68179a64a271b3ef940b617772e927eae8dcd3dbbde4443628147388a4. 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/DGA062317793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7573ee2eed5dd0b78ab2371bc3d625afaf2900d9cd544929d7b165936d898f. 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/GX8LD2318131.