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 0x60b7f5559d2015ccab903028d2ad794e7fc9721ee551a420f2664d1054238934. 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/08dc8939-16ef-4a62-8272-e510c99fa7e6.json and https://artists.proofprofile.net/proofs/artist/08dc8939-16ef-4a62-8272-e510c99fa7e6.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 0x2f90a37df93fded6deb42aab7a14f54a6a00765559253e34c629ad3027696a2e. 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/QM7282419017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24a3b23347ce3865c2788ced06733d01ae9c4c5e7cfedd5fc375ac43ea03958. 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/QZTLA2409864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55de4effbc7627079493b0c1a86cff3c29674021c1cb616e36fa7603014b085d. 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/QZQAY2468762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc091e94d01a2307c624519bd04627d87c4e17ea738649aae3d80daafac1e6ce. 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/QZSYP2396674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38b33dfc3adf257e727e3448bc95b317e16d244475d6b600ae6c4fc49adb087. 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/QZS7J2337841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc4747b4d2d1521f8928274b295b6f55d382ed331329ac8b17fa911a0afbfeb. 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/QZS7J2371427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a0e613b3245da3f571cebb0e4176fbaed3fce89f2e420800f818183d7443a4. 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/QZQAY2371074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4870f03194c76d08c904eeeb10d1afa73bcb674f91d9e479eb15ea1b718ee8a8. 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/QZQAY2301408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620c6d3e500c1d4333a1d4bed7573b0e3a96ec863f4681f6b3118bd6102390e0. 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/QZTLA2385550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf088075372cc02fda82baf3f4378620ba3157db74f17ca0609fdecc02825bbb. 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/TCAGH2220289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc29a3c57fa2613e6ed2b56955636f9989b266e6d4df43e03f74217ebf8028fcd. 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/TCAGB2273087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa10326721150e732972f89365209965e14bb05b3b53cda4e99a50c6b6afb32d. 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/TCAFT2157402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26569adab37a464f22be4d7901d3090e8b0e09d4bbf9933ef92b145e7df0da55. 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/TCAFO2196079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e348b35e26faff86eb7d1afa06f07945d7576a94d830912f7f33d493a0e24c1. 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/TCAFL2173957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561d6a413517a4fb707a6730e41b1f83a1fd593a2d0d5abba5bae92e5d884126. 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/TCAFH2094206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd916a7e5fd1b51a08c7727dc3223fe8f44afbdbf91b24b1b069d52864519047. 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/QZK6L2003262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f1fa065ea1b5d370fbfbb7b819b2b9a23d24c41f24942d1d82fa4b12a29434. 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/TCAEU2039753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5d32463d372259b614d090d726a1fe1e6f63831967894db4346802fd2eba97. 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/TCAEP2053129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b493c1196afaab96bba701c48a9dd8e767c4cf2530e5ab4fe9023a41056cec3. 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/TCAEL1919413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef8ebedb45c6db6535f2baf9f3153d388d2778574f95eced1d5c9b72ed104976. 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/TCADT1853599.