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 0x604b6b887367cdc28c24087a570a82ed0210eb196d5d97fc5c0230315e08b9a6. 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/3ce9d0e5-6cf0-46a3-9b8c-8e2e3519da82.json and https://artists.proofprofile.net/proofs/artist/3ce9d0e5-6cf0-46a3-9b8c-8e2e3519da82.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 0x67bec9fd4a93a61bbc612321b044cca6c0dcd2616343fb8322bb60f3133c0e74. 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/GBSMU9265034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a395d10e5f57346aae125051fd8440ccf5b552cef60d0e73959d451270c631. 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/GX8LD2378029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaed50fd9707912ca93763614761cd0504fe3990b287b69c12e3318ead528afe. 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/GX8KD2396659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3641f0e4576b3675dd57eb4e36cf3eb8ee2fcaa3ef45a8bd243f3d73e3717ea3. 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/NLRD52259239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0ac1353f2560b06aa2e32efdb93234ca1449bbe996e4e6032adedcad1425c8. 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/DGA052214865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac645bd4652e2857a7feb20b4771424c162e2cd305d72d6a4e38cb41fe4c10f4. 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/CA5KR2296415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22bf7fffc7699a31d69b9d1e0066015df6a4c92dfeb7927fc4cbd694a8ec104b. 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/CA5KR2262966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd615b6bc085de0d6a8bf1cd9d49a53c9c2bb5281f1cb63a43799580c54385eba. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/CA5KR2262967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2059b38c1984cb993a73760940f9e8dd488c065ecd207693457c112c9669503. 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/CA5KR2242313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc177bbb20450d93aedf11459a811748c5ccd9b75e065673161019740e493469. 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/CA5KR2254461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92101b143567b6eabd0d6a0c0f38e516663f722b5bcaa837297bcaafdfdbaa5c. 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/CA5KR2254462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96f5bb227a9b72ada813b95b8bd11d47b9cd1e27f895746c8bf4aa5e41397c0. 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/CA5KR2191978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2059b38c1984cb993a73760940f9e8dd488c065ecd207693457c112c9669503. 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/CA5KR2242313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975c7097d7c05c43c3a064c37cde59d404800eb53869876a9850e5f8c5b57b4f. 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/CA5KR2231317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08070d0f56124c4374520e8c2b916392375d7a273ed25cf3d3f0e69cabd7e9b6. 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/GX3HH2258643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0f057057583b4ae61aef44aaee4c30e7bcf6f822f541149d5e205183292dbc. 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/GBEWA2200481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514bfe569e0de91dfc1915d5abf56c84ffe809dff3275ee027773e775e192f16. 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/CA5KR0026359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf67977ab5738f119e7aab28d2961090668b66bb858b26ec8adcfe60aa4bc996. 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/GX5MY2121819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7435b67c5e5a61e1b254b1c05263bfaaa5273a9df2f3cdacb9fd2e133571d49. 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/USA2P2144976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96f5bb227a9b72ada813b95b8bd11d47b9cd1e27f895746c8bf4aa5e41397c0. 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/CA5KR2191978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af758f14bc297d10db1a9b6a5f5e8f9bb0621189e4093368cd78b817396f7c7. 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/USA2P2117992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e26a1bcb7a5ad30806e3855cfe4079359bdbfe2874095efb63249df9050a302. 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/GB2LD2110081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e1bc07810495a5739503450085b8fc46672f28a3bf111dc1227eb5bbdfc53a. 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/CA5KR2149732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x142d41f652df5a7ec90587d2c5a46533bd40ad297ac5535552dacdd0acfbd7f4. 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/CA5KR2129042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16264ad7b479b2af05d035c665071fa1c6ffe07b46514e67ad22af466d9488c5. 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/CA5KR2129043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5030d439b487dd3550bb621df5b9e2136c0f8102f4b01ac4fea41a999c3280aa. 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/GBSMU8796307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aaeb6a706474026e2544500ef80919db323cab0779b9ea2f572afef655032a1. 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/GBSMU8320455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03384a4838cff5b86cab1ae94e541eba836e2be12450089cf151d3b9e62f4e7e. 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/GBSMU8129826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5e7dde34f5200b14a5c4a09e80501677e8b9a28a5bb359a39fa28bf43f79af. 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/GBSMU7966761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a9d8f82a3b4c618042c705899d650909a69e22793d2b039c578cdd405ec04ad. 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/GBSMU7846591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a8921d2de8548850828be03cc3e0dcefda1e009500a3eca3a6acb28ba2a212. 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/GBKQU2021686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd41cbd6cbd97fd255d32d6fec47120fa5cace2d99b95744446f47800db701f7b. 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/GBKQU2008500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ca7a1520f0d96e9038145de92c92aff180da74607a7c3e470a7ef9a11375b2. 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/GBLV61930689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea7307efedc3cd5de25d84c37c6cc3ab38b876b39442b9a004c6dccdbabeace. 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/TCAEO1928970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f6fdab655e38a2c52185996e7537d788c6379faa75834156234441f5ceb29f. 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/GBLV61911554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbae8adb60cc377b1e40021dc0a9de26548f8ad97a734651ac19840e8f64b582. 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/CA5KR1960940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92fa0d9bb02e244d44bd1192fd91c7b52e57caf45139b3515049f954ab6af2f2. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/CA5KR1960941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568587519da462c43721117e3a09edb2522889315eaec250971be0083cad41b4. 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/QM42K1920751.