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 0xa73c250b95e0aea58794b02cee0199dd65c0145f2c47a92f9b78f85ce94c2ca1. 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/9fb00505-95cd-4a13-8557-dcd370bef5db.json and https://artists.proofprofile.net/proofs/artist/9fb00505-95cd-4a13-8557-dcd370bef5db.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 0xb60b1a6ddc881afda0bc38bab08e7d773c23aaed1901bf9805d3d77bdb910258. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/JPH490810016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ca808c9a45c8ced30a94ef1fad9282d28e72c25b4a4dbcf9b5a1ef3927c672. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:21:19Z), 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/JPH490810017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d937c74fff77345c0df6c2da47cd5ef6a91431136915855d20e9b7edc9586b. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/JPV501000578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027d3ff7480832f87b8212b7c6d9f4a142beee497ce27bbc8a0bb0af197282bc. 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/JPB621207124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8c543c81aad693a4dcf4e9287a2e019e12b2da763b91c730b5201909202020b. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/JPB621207125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c66bf5ae1425e71e1558e8c39fa3e13ab435c840966dbbe61cc1805e7c1845. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/JPB621207128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6819c2c2cd7d19c0be0629231bbf8d18d843c59254e8e6cf22fd3016e3d368a. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/JPB621207132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb515b2fc13c51b24acd99327119d73c7735c127e6e101002e9b36c00f4332e8. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/JPB621207135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94de863bca797177e5103f57d2d7ae2088675e3c05bf988f25a51505dbb9e55a. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/JPB621307945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d14cd9a4f63d9fc761809a1dd92a76c211533607bbbdb23c6ce99ffa59d901. 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/JPB621307946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e4df31d8687b1bf31271ce84498456570964c3ff81edd4d5047cddce7ff5d1. 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/JPB621307947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x264f18c04b58f87f256aeada0ef42ff8524f07a686c3f56c7e6505f24d7db4d9. 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/JPB621401280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9375b591adfde8d9430a8c71c201e60aa816118864dea5f345964a1856c5df76. 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/JPB621401281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b1f97019bd26720489be454604f87b9d53878665f6ca51c4308e751068ac278. 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/JPB621401282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe2501ea118f6c4cebb78de8c1d12a5ca635e91f174adb290021f83620baaebd. 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/JPB621401283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28de54650074903d414b5fc88a79c558e4bc714236fa3e08904f2f1fea777e79. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/JPB621401285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f6e1884d15faa38e9eabb1007b1563f1120aea92cf34d89557f3f515de09d6. 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/JPB621401286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b488ee463f46cf189a6deae434578d607208f74ea93519f4d4fb9b3c98bb234. 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/JPB621401287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x313fefa507ba31e1f68d322ac4b6c45558d6837edabe5d0ba24c37e0017143ac. 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/JPB621401288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b17e8060a6e63c1220866a3ab94f61e4e8d857a55b9abab72431e2b4af60222. 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/JPB621401289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840ea073058584ae00e6cecbc0b2d944baeaa4e462443ae1994a3001f58157b5. 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/JPB621401290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb52b66880b799657bd79d7dbcdc4dd9f09b0d69f0ba2b1b4b59c4a57018f3c6. 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/JPB621401291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cea8eee264a2835324cc171b9877924527dc18e7c676f39f79a3cc09692297e. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/JPB621700316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd739b81183cae3582ca4e304c52235889fd4c655c5404447fe860e60172ffe. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/JPB621700322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x102b0bc5d4a9f6ddc09a573136dd33f70a98c78befdb15d17f3a2a534135149d. 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/JPB621700323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x544fb3e93116b1c2cb5f93075ca923b1220e2597e76f7437e6ae75b6d043b5bb. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:21:41Z), 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/JPB621700324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9254afe3c242d33efb0ee0d61c4f8e19ebd0dc78f78180194e4bb5625b5425b5. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/JPB621700325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a5f224faaddfa7e8ec26499b1bc1117760bff0a06106b3e348a3faf1635f7d. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:01:45Z), 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/JPB621801270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d6a3a1349dc61cde072ed3ec98a2055372c5589cbecaf905486435bc0c3611. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/JPB621801271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf7f617d94cb3b0329db097a8a8729f38e5a00c2f7d006557a93355f1e9dcc3. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/JPB621801273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01725b4f9069dc6461032f7d12696c2fc2a5fdae73e6cbd34782ca64e29faf86. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/JPB621801275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37718d243a3829412e5e3bc0ce09e6094135579c4fe595a6ed49c42b7cad590f. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/JPB621801276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x121bd9b1962c0840a52fa9536a460e9331fd919d8f1ea878784e6848f227c414. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/JPB622001436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c1913ebdb9900fc9e4b77b8404e5d6544727a41ae89552c3240d818cb2899dd. 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/JPB622001438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd235ff9c0a7be73af1c0e80d3ffa3d1aaf9a4a343290f9374c919f7ea2db16. 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/JPB622001439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x921ddcf0241d2ef09c1889059fb917d2b6db7b9730e45206a03cead4542c4969. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JPB622202560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c5614324eea1cfe83db9ce8206686fb25ccd1611700c8e1319f596482ba66da. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/JPB622202556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x154ae9ab6b7d28b35e454bf878c37cf2515d3276140bd25e7206eb8cc9a36b16. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/JPB622202557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b7d668131dd6ef2ccad564620656a3fd15c81611c754bcff73bf9ab4fc4119. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:06:39Z), 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/JPB622202558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3423bceda3db7db74be9cd5b9b13cfc9ec808b166e971cf8272509680e058c02. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/JPB622202559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x639574095986f113ad7030b6e036f19e97fb9f5f8462ab520797409811e71ef6. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPB622202563.