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 0x5f11d24ac8e89e18a34498c92b38a11575611594105bba2c04eb88534545d24e. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/63b2c83f-183f-40bd-9b04-76ffbf82d150.json and https://artists.proofprofile.net/proofs/artist/63b2c83f-183f-40bd-9b04-76ffbf82d150.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 0x4aecc1d49df6fb0cdb8a36335582e144f377cebabc2859241a3694e5992a26a5. 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/USANG2237359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c723399aa79c63aa4905c691d139fb8ffa74e407c68dbf47a7a4364ddb3671. 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/USANG2237364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b22b3a93bb31ac6ae25b2582f6140f9c280cb8a48a81ab59f77871fb38cfc4. 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/USANG2237361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc023d1190d26ab6731e92c5c0bd7d2471381658e6da5427b26118390a8b7553f. 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/USANG2237366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3000b87781b773985e7c39379748e4dcedfe0e21663c976141d9074058b011f4. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USANG2237365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8879c5c3be746e0d6c21fbdc5a2d0b5fdcff01ff64790287430d5448556bfbec. 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/USANG2217931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6486bef861a947f89b01c5386a4bec9f2569b77294fd0005c857d9d3fb722104. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/SE6TI2190141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa406ba47a675f33423ef6d24f1d1208c93ab0dac23aeb8cd052b5ac60b3cc258. 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/SE6TI2190142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd51b6f343241ac58a4a7695fb2b85f4cd0665df4a5ee7518c818cfea04fb13. 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/SE6TI2190144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0782a6cb37222d7f3d41069af06dadabbb10e435aedfcd1d0aa180a1a650f7af. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/SE6TI2190145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29f7e948c0a8c3971f69081888b419dae53cfe8052a32d3391da5f417ed5e0e. 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/SE6TI2190146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4145fba5eed2d6430eeabfec4d0e463438e82925518e39fd7993f8647bcfbb80. 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/SE6TI2190147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ced99469064f8b5b853a700fee7cb0655024e65fd3146f45734c7e94247d5d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR59R2229575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x992836cc22c64a0a611dc1db857b618127d53e7449948864c928a2d65481f70c. 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/FR59R2229579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a862de6f6912282cf366af54e6747f74c188fc31b1558657b2fa2cfcdfdb5e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRX762114163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb33cb8d54ce13fcbab384988040ae2d937ab15607ea7ef93fae09b4d41f853. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/SE6HN2000105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f5f10417a4116e2b00d71172a9e17ddcc337ed46e5aa4c6fe3748f24397814. 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/SE6HN2000084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763898b877353a63041d3f639d03d901ee96e1a519b8ae5e5e0ce0355c0537ad. 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/SE6HN2022499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25dca5587efb7ae196a5aa0268cfb0c27986f608f1bad75e2053a0608604988b. 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/SE6HN2022500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73396210ce1cf8d860619cb7ae1ea384b09f44061f5b24e528ab2322d4f7d5c2. 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/USCGJ2048074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a553f141352cd22241ea357672b24f25cdf72034f095692a9bde312fcd0cac3. 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/USCGJ2048075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990484108ac5350beb04aad1f850cd314a1e3472b3562bae88e7e7f3fde9c906. 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/USCGJ2048076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841bcc4748a83729e3205eade73fffcfaf0ae327df529fa5514b0b24303fa8bd. 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/USCGJ2048088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836232d16a90a4f57ff5f58068dfb8ba08dbffefc0ca07c12ebcaff9eb3056f3. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR2X42229783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c2c22d9ad3a812ca90fde38b32e005ec8330929d703fea109eb3e64197d332. 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/FR2X42229782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa938ad01d922da5d982b79e3b704894f40c024deef7701d77c4c360f2c2739a3. 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/SE6SA2191767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b9f43fe417baa4178767fad22d092711e3465f0968d0a9e247b158c7e0088b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRX282098510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd9c4ae13d3118f39119709abe890ecceeba92ac30eda6a5b355dc7feb2b036. 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/SE6HN2031893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a107a317514943a6eba7edbb25e6f42dcf4867d7f8a9dae464bd562123bd113. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USCGJ2020084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c2c22d9ad3a812ca90fde38b32e005ec8330929d703fea109eb3e64197d332. 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/FR2X42229782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0fc5a59d64b95690ed5dc865c3d4b52d379f91497644c3463a652dab3b395f. 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/FR10S2277214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd926ba5e94f4f581f8189fe55e5dc19968b9122afc8fd76cea248615f187e89f. 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/FRX872153910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69aa5ccd021de57197d6647456d30bbd8f40baf532eab05cd7bc866d310d46e6. 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/FRX872117366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146603dc06c0f867af9382b40a770d2aa9a59a64df59284a5defa0f22870e664. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FRX872166505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0109f2e19a389b2c9d0648d08461830361ece3897570a8784c300fb4e02a0a62. 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/FRX872015023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d8fca8f0245c558ae0d9d95bab46205e4b165e6f4b780c52504f2f17d8030a. 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/FR2X41950740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99456c145041ce8ea9233e84518abc8380a4d34691e34d73e58eefda536e0807. 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/FR96X1947052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c0078998ef62127e0db46e8c28d44acf774792e42d3dcd0f0ee9f9045fd71a5. 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/DGA082211781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506b3b2d86fa4e633e314f40dbadd5724ce6b3e19d3591cd3fe551910df65123. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR10S2281792.