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 0xe941b12c81e97b9ebfa69fbef1a2a326885acdec1ad9e16e94b16a9695cf6825. 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/be0f6b45-d729-4818-9728-fda064225e1b.json and https://artists.proofprofile.net/proofs/artist/be0f6b45-d729-4818-9728-fda064225e1b.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 0x19cb4f06be86c88c03c2b5a893cd6407d6c4a5501ee4546a46c3855af9fe3f61. 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/HKG732462997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83108a85eb5156ea840d8d2590c61f71bc0b15adae58bf4806b87c04b50a22cb. 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/HKG732462068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaeba89c29d2e5830834bd1660fb2227fa45981726d398be2a8ad109e7f6186a. 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/HKG732422658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc6e29a8037871f6c64ee97560e8b7551ef8ac4b05b53239fd984fd310e5969. 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/HKG731659785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063c8c3ca056094ee0c1b22a27f6f110d1ed1297eb7ace1ed9991df6ea8a9293. 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/HKG732355615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x910f7766b00ab1b3fa92e724fec298414af7f8c949f1511130bcffe001515d0f. 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/HKG732310015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b83d5319c08576cb31be5b01242c0c8c81d333367f771e9058289b3cfe5c582. 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/FRX282290182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e350fec84ac3facb77c45619f44c935e59b50b94560a9decbbf61a08205ae60. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FRX202283172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a72fe71e946d8358ccc2959e76b8ee0019e8f33a4580b46ce78d17f6f671701. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/FR96X2272198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25dd8bb266cee788a710386550f9289279769381bc25c2ad60cfa64700c6c58. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T16:48:23Z), 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/FR2X42226999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e13697d89a16048978f38c63598692c319191866ae3e2753a8cf7665c6162f7. 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/FRS182129235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f790aa36bf1864dd0607a4f0d38b8f390728e4d202ccb03c229dcf22b81f16. 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/FRX762169737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a799739d2f744be5b679d65a7fcee41f87387db070bfab866cc4e944a2c92c0. 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/FRX282152477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509f16ea60fa8238ecbfba4bf46f971eb7f30790fd4718a0f461f289e87a2bbc. 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/FRX282109168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6f5015e05dc3bd32644de12bc9f3a7bd1c56ad6baacaf1250396e3f9f0ed5e. 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/FRX202157509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a229925ab322a7afa7dc5d2d30737a565d126dc9726f7b8fa83c13b9f96ed2. 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/FR10S2142971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162bbd6505a5fdc7b95b4a6a37928e5edb563c0f8635d396035dfdf7622fa56a. 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/DGA062032004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56771310abdd723df3eac66b738e99fc77f12275405b098d312504758d9452dc. 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/DGA062032080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x353bf327df83c3d31ba560cab3fbd5a80b7a53e022ec475a7c39d2f77bc76356. 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/DGA062032076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a66da0d7c7d41a3220a52940f79d37b6ea92384db4f30d1781746ae86e6700d. 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/DGA062032078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8838be89cc1cf9ae174c1269f88dae9622f9e2e34520ddad77b35f40623a57ad. 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/DGA062032082.