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 0x69cf7dfade95a26e7dbeddcaf2ecffb2f41529ef1de48ab7dadaa87c0d51592c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/48d14259-3aee-4bbc-8835-23b1c37159d0.json and https://artists.proofprofile.net/proofs/artist/48d14259-3aee-4bbc-8835-23b1c37159d0.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 0xda1b822be5e0591ecd8d591c3a3167a217f8942e1e0bd6b784ff3500524b6daf. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/BRBXL1900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd200b2edc279c0661c4f9c14cb93ad24db3d40c9f634c86856ab05050d32f77f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/BRBXL2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aebda64289e7693e3c25230ae4e3ff8bbe316b63ec70ee15d8ebee6d9e0aadc. 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/BRBXL2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df5d1daa6d527c0b0c695320e1c1dccf82b13aa79ae81522489766849a42aaf. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/BRBXL2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0327a7171872afad1a7687692856d2d8a1334f2f209544c3f6c12ad32bf73330. 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/BRBXL2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49c539f3754f49d754b0483d016ee37ba5bf1d4d2331dc4b345eab78179892b1. 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/BRBXL2100023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd034b97b73ece14d14099bfb086bd75d533e9ad8c526d2fa0cdabe1c468f6ac7. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/BRBXL2100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x117dface369c6483002c9bbf2e6ec9f3aa5ad2645b5b2d5067384b56bd5141f4. 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/BRBXL2100026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a41ec726c691adc5a2789ee26922fa4aee26b64b5d3683d71ffbf8e7da44ec4. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BRBXL2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad0cff17da129b7524c3e9d95b001d2f72c0990abab616e6a46086060ffc6ed. 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/BRBXL2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568a17500b09df2848ea01610e18ffe8982a13b83759233e3f29eedd515fc12c. 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/BRBXL2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60cd1036f3b59819a0079a11e952405cc43418937a835acdc2483898e4bae59b. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:21:11Z), 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/BRBXL2200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cae69abbd9bcda32ddf0c8bd5b3cbcfb15b699572959e037e644876ca9029f0. 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/BXTB12300183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96706a1569fad8f0a4bf392de992891f24e1c26669fd25b0935eafe1f82baa0a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:07:13Z), 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/QZNJX2382856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6db2dd56f0c5172e020b1a0b704becdb8eab1b9e865f1e0a7acd5ecf1a092ae. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:33:04Z), 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/QZNJX2382858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a1ae5c4b78100b7d9b496cd27a2e8b0ff0d5ea1e17a00d42ebc05896dafd73. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZNJX2382859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x729e8ce4d6afc26f69118e5e421e3fa4bac7baf3dd05e5038b7e32e62c14aa6c. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZNJX2382863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x175b906a921c46acffccdeefec78c7dc9450f38d03bbe14b7ee129644fa3b72b. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:34:54Z), 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/QZNJY2365218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2e130ecb87b30052b143c4e65b2a521a94ce84e62fe96fe8bbe5a20582183d. 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/QZW9K2312085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e3bb77d5945142d2fcbb415746197efb8e10962c4193bf8715122a6f121f4c. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/BK0P72400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff66bb71bd4d206ff92337ab9bb8c0e1c655f835e085624a84dbb190a4f5e44. 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/BK0P72400047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e69861f085c8593e12de03b2f581aee6e5258f51123f19e729a54739ec373c. Chain 2 (Bitcoin): anchored in block 957868 (2026-07-13T14:56:55Z), 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/BK0P72400041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7856eecd233baaca032928cb8e68bf46768a92343ff2abd27db1e9e721b1a8d. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:44:01Z), 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/BK0P72400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4099d5cea88e9b81492ce99d6bc51f15fa3dd381a903ec1c85f12676d1ebb4be. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:28:05Z), 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/BK0P72400033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7afa051079c0b9a033c9c0063730d4210c10a1cbbed8ec2f65f3214a5d10cb6. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/BK0P72400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6773dbac3d71ccbd5bef604cb8b3f9d6ad0b1ef597d6f6428166be956295e265. 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/QZNJW2576099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f953dd9bd8916dc464922e3f11c93109a8660231a685bf03a57259f588882a. 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/QZNJW2576103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aeaec50fe6cd8c1eeb257f636cb3c2428396156dff765513fbb4f29af89a858. 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/QZNJW2576106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae6ae3c87a3c5f5d279ed6f281c8836aaa10f2812ebd893ed857eb39ac3c44d. 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/QZNJW2576109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab28be50d2130c82bf9648595edbf53397355e8b8199dab6d54fbebeec2efd8. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZNJW2576110.