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 0xfe2afacd053df555395860c90c94ca4156a979cdf11783d4b2dc5984120432a8. 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/f28850cb-057b-4553-a25e-f285078c42ce.json and https://artists.proofprofile.net/proofs/artist/f28850cb-057b-4553-a25e-f285078c42ce.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 0x7a7048d6d57714bf78a0551cb48cf2a4195555cab201e916409689d69a6ec546. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZTB32229477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc02ec7501027e69e2ba2030a108e5e962bd79f88e6ef7e7018dc61f88b7eeeff. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZJRC2243594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1166acbf99b3869cb2eda7d9949fdbe472b473d26fb5b5bb0914d7272bc5607b. 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/FRDX62302720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d7248b6a56aac4299263d6971bb4390340227168467113f4894f3ca154b92a5. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-20T00:21:56Z), 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/DGA062349196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x069a7044a7660f9fa7a382d068aa9a4bf55c5e5b0e65742ef4880efce5a288fc. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/NLCK42234760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa59019811e145819d0458e91f7783929d7c6390c6a3437160461fed6e636ce6. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/NLCK42234762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a224462bff1a85d06fccd82fd5c7a9252f8ee35140780016446c4a27189182f. 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/GBKQU2387597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582fb837131c93f0c6a3075cc5f3279c3a4c92411fb8ff5fa67140402d68c6e7. 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/GBKQU2387598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca477ec3eb5ed61becf0ce3d8e6b64b2de5cc4ca3e320412a6c4aae41657fff. 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/DEH742328973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2bff51b47dc76fcacab5a12cca44d777d73feabdb81dbd65dd5e8c2e57ef784. 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/DEH742328974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ca64187abd196da1f9a5745d41ed0d6306ebf988c772cf89e137e567157a48. 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/DEH742328975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61621c0ae5b20bfb0c906ec1c5f1962ca2eed500e01131e2ae7e0113ccf1eeaa. 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/DEH742328976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d1bb6e1db31694f72ec3bef7898d65e486a1d25f4f0e10721da820459e235d. 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/DEH742328977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b3f33820f449f27303c88bde983b6c4d474f8096d3be3e485a8c619f266622. 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/DEH742328978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca4a0cc6485135b432847ce318807841a325c4ab32a46284dbd1379f97e6d62. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DEH742407192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf097115f0938d7aeab31e32c8378fa80a2663888a511d9ac8b628ed42650a1. 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/DEH742413867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f78fa59bc8bb7a9ce6c475384fe4cf97677708923060866f0da9c8b777e7d7f. 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/UKY7B2000063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c4eb61c69f815baa5dbcd2b967f7f5e2d8ec116cb8cc4f451c622b3296342a. 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/UKY7B2000064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188a4a71c6342966a2c61cb300e2438ee514334b3fad720bc94b7eb6e9758e1a. 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/UKY7B2000065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7636885e2008221623604b81382408bcbf47cb7f6cdf2d7846b931cad1f79256. 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/UKY7B2000066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x530aea811178a9ded2ac292f8e1e78b8e4b11140110821e95d4efc92cb6aa77d. 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/DEH742435805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc999a0fced51c7dbfe161c12a6ed182a006e650a7ed88b77466abd79e1fd4431. 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/DEH742435806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1657ea0a17067e4370a6b461d7dd8358856c1413ec4ee351bbb351b6e12691c7. 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/DEH742435807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd007ea077d3b8e6654760dcee972f468e772b034996dac43bfb8c6b9a1a67d28. 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/DEH742435808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f0799a31677d9270fbf6110c7af66917364576c98693e2b1be068276f16534. 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/DEH742435809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ecf2819838039f110ef04a9a05f2cd8157f6f720c07b062108956cbffcb408. 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/NLCK42238934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b76b7333424415db9fc366c840c92869e6e46a03330c34cbbc13723446971c. 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/QZH5E2314250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6873ff60378a8af35cb42710847e64d2c20dbdb7e2de9f4457725ac928a01940. 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/QZS632269845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e9d3ed016da7caf579b41dff37c7e1ad25fd15c1a72e9e63e51dfd8f4fc2c4. 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/QM6P42478691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc20f84fd088fbe1fd66cc37a4718095c6f48ebf7b77b7be250353e826ff4b8cf. 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/UKY7B2000054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae778b36154724365e927b222a66fbcf77f8d35ca67e74a4135af90fe2f3fe43. 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/DECY52300871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8606f6fd3d6fb1b4c367a52522d37c532c880bcb721f627625c3937e3f2d269c. 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/DEH742511900.