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 0x66d4bbeb6ea79eb433c03a1ac360232d8dc340fded7d53d9c2480927a0528970. Chain 2 (Bitcoin): anchored in block 953762 (2026-06-15T08:21:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ba9362f2-a59d-4001-9aa6-244f1044fd3e.json and https://artists.proofprofile.net/proofs/artist/ba9362f2-a59d-4001-9aa6-244f1044fd3e.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 0x5cdd78241f0ffd8d9afdba839e1ce8cc86eb3839f13da53bf342d69984fc8498. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GBLFP2542714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46121b91d2776ee3d9d93bae14e05941c2acbf9c488d4e12c3bd7c5794f81a0b. 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/GBLFP2563794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc503f4ec59af6610367c0745a98949c7fecfdba1d22b7491f3e1e246a37ba0f8. 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/GBLFP2561406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b4ae28073a980346c4f7d23a856afd688d9f4de0b2d48c626c8b7af0dc4b337. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GBLFP2561397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c9d0907d62e9ac57dc24886c2da82868566058af8a775f5ab8bb0eea24b7cc. 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/GBLFP2561479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a66feebaa2360b6fc9dfa127ae184f7b317c281d51a21e6389f8c95c0c6864. 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/GBLFP2561393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f35f510f10e48bb80244920764d3f22722c74b64076daffa101b9c4532eb90. 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/GBLFP2561396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7672ec47dab8680aad010d9bc566ab8420732ea4fcf8cbe3d687d68e3d9da68. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/GBLFP2562399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a547396b609c657f36791abffc4cdea03c1563ecd0b1b98830a9a0f783a4770. 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/GBLFP2561395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbd9dc19044ca7598b54f1f60aacbb6c0f56495caf6f4fb2d115b1faa76cdcc9. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GBLFP2566586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb65a8a39a9c300dcca7c583d1a8078073542314878435cfacff8f65a87e7ec. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/GBLFP2566612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x911e916b9e5580e80f10399af81362f97b8d1b1238f8cb57ae262198e852a201. 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/GBLFP2566598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f13316c082a5cf3cb68171778899c77beff374c7cea3fe27ce8bfb2a9030c4b. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/GBLFP2569583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa850856fd61e3d12a80ea052020c00a9476da0bae85001e506077a2a0c5dda94. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GBLFP2569560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90254e53461218896fcde12bba397fcd8322e00ba08369b1ddf84884e839c5db. 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/GBLFP2569556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57880bee6ecb1d553298e3ad8a9273d885c124507a3cc4ed1531307bda620fce. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GX53U2560216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bdc367962b5c1a4a87c54213f6bb54b9694ae751ffd95908d09cdaa1c040885. 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/GX53U2560217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b9c7e00bfc623de7a80b606a7a6c349ee38a5c7dc4d682139918fa907d85ef1. 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/GX53U2560591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16dc38bcd58c16c4625ffbf8e84e7eb4b499e3f810bae2100ef24c2182598fc9. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/GX53U2569876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0275ce09021a24687db2595b964b0f04a61ae145dd558e4a20ad63c1772294a6. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/GX53U2569874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ba6167f3f3a81cd5420fe1c39927c3511a58f8c8c4f37925e20aad9557d24c. 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/GX53U2577483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe50a3970bac526650f49c91df7929acf7a3c8129cc9ffefd420316edd60f35. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:20:16Z), 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/GXHAF2570846.