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 0x42607917bc8125f43e9e30475f90eb4ce9842d05921fbca37fa42d97e733c32f. 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/66ff8f89-564d-4b36-8607-b8cbcd945770.json and https://artists.proofprofile.net/proofs/artist/66ff8f89-564d-4b36-8607-b8cbcd945770.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 0xdfdf5e92c6afd8612cd6f729ae83db0055e45c991f342001dfcd6e108ea924ad. 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/QZES82209030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c84fd212fa8f4986202641170cf59c8a45281f7ac3f0d4f3d217234ec7972dc. 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/QZES72274240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ac7a822e76ef402700e8fb80efab59223fbf6ba77e27752e9cec3f3b650081. 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/QZES82209032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x387bc9f0f1c7a2948add92e828b923d310d1d3218f8626329663df14db99988e. 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/QZES82209033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a996b1efb735ffdfda928defaa995bf6f47f4a3d694a546c8385067de8a5c5b. 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/QZES82209034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a158e726815a87c664c2607439577b84d939bb85b632cec11fcf01779e236ec. 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/QZES82209036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9a5e4e1a6ef98807f419d7b64cbb5ae650a2df9aae61e19aa7c4d744e92fb5. 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/QZES82209041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c20f2d5e25e9d92231aa4dab05fec9676c4cb8b318ae0da44e407a91024aee. 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/QZES82209042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc94b4b174b666d08d5319ae68f782212b60434f197ca90a253f4c2d90328c82. 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/QZES82209043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99cbb802419d22525a2066fd274733ca35cd8d9857f57c2161171d04a97f208. 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/QZES82209044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e7e37b2e3806617a0b47ec8f2ecc3b0fc638c2fe58802cac6e221a4ccf3ca36. 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/QZFZ42261387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d907ac1acaecb2178998a627c5d452916a6f3508ddff9b7ea9ab1db5ce71299. 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/QZNWQ2074607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2651d7e87b5b5bcb07a936c7c691baa5e48b88aee58de3e0e5fcdefcee71d5ea. 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/QZHNC2079491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891cdff8a2fea7f5199ade74dabb405e50516ed33d949a7856140b18c7b593fd. 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/QZHNC2079492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf818197f42ae5128785a32a9c45564f3b6d179c3b6ca382b6362b4b6453b226. 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/QZHNC2079495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83083de9a33bb7fd00bf08735f36a26b284ba059543e477760e2c242cfe3a11. 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/QZFZ72072343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bea73b958c772b6da9952a267c718aa0a8fc854d8c251435ee824e8470e5716. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZFZ72072345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb79b624e19f1d778648daa755f58ba4ad37137b454766e68f1ce3d3a9bda83. 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/QZFZ72072346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f7e02aa19ea22195ea7b5c92614d35b8cb48c58078f045cc8d55a73f2e24f1. 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/QZFZ72072347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1adca92cbebf5236af5a9277c468aee1dcb2de3ce1a55176a449264052d0706d. 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/QZFZ72072348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00424a8cd76b6778cf126ebf4a9817d3ad14a88efb830c6eb29bde84406ccf8. 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/QZFZ72072349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf17888d743b7ea12f45c405a8b77b8e2d135b3d2583002f31d14f3e52c6cb18. 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/QZFZ72072354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd9aefaf9ca63bc4dd1d27f78c7b6046c5db997460d2d421ead4b8cc5a1a7b0. Chain 2 (Bitcoin): anchored in block 957057 (2026-07-07T15:21:38Z), 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/QZK6F2307546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7a16f60065611ad3ef05ff35d7736616f231be9acc723e131971b1ab9e889c. 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/QZDA72381165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da89ec1ba87148a7828a29a630418156bf83ff02711d1a39eefda58214f5d55. 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/QZDA72381168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba99e0eb42969837c0e77a699e3298e03a465f9672041b118c236165c3ec845a. 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/QZRP52291041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23bad9889bff1cb829607fd77cc4b2cbcb38fdce0c36eaf1c86cbd555930ad9. 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/QZMEN2286034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x629f587fe02078b73f1091fe4bbbffad9172e44050e54910a313d6e7fb552737. 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/QZDA52292086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e7e37b2e3806617a0b47ec8f2ecc3b0fc638c2fe58802cac6e221a4ccf3ca36. 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/QZFZ42261387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd841f00cf37469ca03d0803913a5682b7e1f50e726d3e2aa006071608bf57f. 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/QZPLS2119037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ff79493aeb64237d272470280032c8b8c3933a908d2ee33238c5c7337ff300. 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/QZK6K2146638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa80ee6d8fd79c7c1eafb74a9d00a90a68f93cf4d1650a8824bb9a5462bb9d818. 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/QZK6K2146642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc499cda51db7caeb0574a74a1d31b4171b7ce5497cda772960ea16921d80e41d. 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/QZMHM2042231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6447e198396488e77703c424d56d09afb99b822b3f1ef4a0c6ebe7eafd3bf42. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/FIPHW2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b5a928bbbecb230184010c222cf56ddb83583574a333ada0a7cc3ae1287f10f. 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/QZHNC2249321.