1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x16fa6a895e53d92488200c04c6f48f4082af1a5d811147758ca1051e5d78bd7f. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/65b3f7e8-961a-494f-beec-115b22500bd1.json and https://artists.proofprofile.net/proofs/artist/65b3f7e8-961a-494f-beec-115b22500bd1.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 → block OTSBitcoinBlock must exist at that height 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 0xf4ab58727469b907dce1122f03f2b9900c6ee4a3eb9b2117b495cd27121bf183. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM42K1888911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x122c7a09276645b25765f4d2127eed232f860cd077d011b9062af0952550bed5. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZK6F2094314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6aeb5b2403fc21507fb0e13b6f3eccf081240ea87a9e926825d82187d8321f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZK6F2094315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a68f9a9b4965bc73778c290c2ad50a645a61dce604b1fdf9871822f4fddcb82. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM24S2107635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd3d67896917bdd6e4f996c710f8f33c7333031ba1472f4805c95145db91bcb1. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/QM24S2107633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5c477f8f3c1d8993c82d7ad0221655ef37ffc7e6601f69fb79d3436640a341. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/QM24S2107631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f6511e8d8e977fd0ecc7b4cd9aa63f647646aa624ac3a8f81edf81e8641da8. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QM24S2107630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3101be7bf6b7fa463850e4977e7dd5c30db974ed925625bf81d4ae6e738e35fe. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QM24S2107629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb446144f1772401b8489d80bee738c0151e0a124f7acdeaf3b8b57aae85c85c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM24S2107627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21ac083a7abf7c5ff775c1d22f8a19e57f06d62a7f3f54331306e2631666f6b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/US3DF2228806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac91310f03b1723f1ee92f448cc26a5ba2b50deac9fbc044ccb6c243733f8086. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/US3DF2228807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb5a54c0911ce95cad885d41c1577e6771aebbaa8b0f32e4d350684e7b0fd6ff. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/US3DF2228808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1ed0ab97c8e5792986a013d2416754fe8f52a2f2da36e6406f2b5c0c0d49ff. 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/USANG2202163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc5809ee8d4f7ddecc519fa35b25c34e2d4b038a9764b2c44343162fb1fde74f. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/USANG2202168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e1a9f00e305a12d67447c16418327ac1da32cfb131339f7dc5bb66c5578e15d. 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/USANG2202175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf779df7494836d3336e771428138e3e0e58a676deae053c85348b77da1006b1. 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/USANG2202176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf16a392750d46d940c2ae40113a2e9eb5368f634f719b04951c192e4e9b037cc. 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/USANG2202178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ec19ac47891387c728291267d5eb045b339fb1df12bfcd5ead1262dfe646b2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QMANG2258240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ab52d3217258756c921a4b094e9c5902e5bd755084c4305ea2ee978bc9fa77. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DGA052533118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343a3ff9508bbe9d799b4f8714e47cac65f68453533c61780809117570440763. 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/GBLV62023511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf603d5f840d956e400fb0eb639e32cd43a0939113837303d9fb8c8100cac4e6e. 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/TCAEU2087072.