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 0xac64004dc17e42b9fa82e7b9e3c9609925dbe37a822bb8b1d3b7a47549e0e25f. 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/24ca80f9-8320-4b11-9bfe-393d17b787d0.json and https://artists.proofprofile.net/proofs/artist/24ca80f9-8320-4b11-9bfe-393d17b787d0.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 0x9eff5a6c023ed9a22a8f317eaa4694496db2a6a9bfd5a725d380a7a328b0bc63. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCABY1455178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb61e2ea79f881b2a2367a1a56e056d43e7d1084cf633456da5a80f2588cff6. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/TCABY1458846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc9ebe917ffb6a7a70fa5f75283864d1a1cb1eb1205731fb9c73571d5d30acd. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCABY1457132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d2c3f3cea4615f6341fd106523233a86c4f01262a045f1080f4797692f725de. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:54:54Z), 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/TCABY1458087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0efb6bfb4d34a07779dab98bbc126583aa7692aa6e60d7d3cb0f3a8251c5d372. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/TCACM1637597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6edffe6efc1076019af481136a35ceaf88bb0e25def84ab66590c561b2872135. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCACM1637627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85babad6444a2262cc13184fb312765e078e9146bf4a18e0f843370f1a52f0d5. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZDA82010717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b47e5fee89cb6d841adbfaa5fdab53015bd49b4f15794811efe129dfa5de0c6. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:09:26Z), 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/QZDA82010719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cbe10e588aadd1184a6fb100f14c5605eb6b1d130fd9d925f9276d8a9d7de26. 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/QZDA82010722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d230fcedd28a16b131ae9d2321bde8103405c78e9c3a95c270ac80195bdc8fe. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:01:38Z), 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/QZDA82010721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38baa2190bc80f5c5b849e0316861817bfb62ebda52d310c75439b13b6ace7df. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/TCADL1885436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0615f65a40e5589b6316dc6967135bedb981654493bc55df5bea1d567e607d8d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCADL1885438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ac3bdea4a34806ea78e093b7e8b51548c10775c499dc8244db3d289a9fcb78. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/TCADL1885441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef408be40c6fabe8feb5df157f51b020c127ef445d6c8e239fa2549508d79c21. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCADL1885443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349bcbafdc5c51daa8eb25113d80cb53faa29326a7f55606d85bd1c19f77c13a. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:34:19Z), 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/QZFZ72010347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299b04a378667254cd2a615afcadecfeb552653b27b11b8e792b949f1a8643ad. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZMER2182450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3590e57555c81b43163ba91582f8aab388951eea07779aaedf8b4473b68454d4. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZNWY2272114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58963832f9b9dea9a2bf42672dc31755e68cb439a566f9fec0e7713aeaf2cd64. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/QZFYZ2305489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb830b7c613da58be4fa8cdff77d9f8901a391075088400c76117f9677055feec. Chain 2 (Bitcoin): anchored in block 957642 (2026-07-12T02:46:48Z), 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/QZK6P2379406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a978abb3e03075b790ddbee51d88775994aed660530e0d32da0cc6da828ddd9. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/QZFYY2430523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a41d4299829cd89a0629cc2d982ebbf122b68ff7af0cec0fc8969e9a956c66. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/QZHN72495549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa64e23504ea57e8b5ede154c82517c2d01bdddf8640a306086816828a5d1dd. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T03:11:56Z), 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/QZNWU2495054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a14cd806d992231a12cb72c73148665c8a0a2c9747a5a45218ba316a2a1b4fc. 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/QM6P42444386.