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 0x6bafbf4b76dd951a7583f913d4d394ba11f6aa7d7f78418637e1ce5c8e1b469d. 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/6c28e4d0-2ebe-4809-8cf7-be74a8655167.json and https://artists.proofprofile.net/proofs/artist/6c28e4d0-2ebe-4809-8cf7-be74a8655167.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 0xa1dca70dfdf39bef792ab9dd60881d77402bae9eefd6f966377eff6ffdd8507c. 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/QZRP52301193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb0d0764b5a551bfe4ccc67ccbbde1dbd6dd6af540efcbc1da90c5b1c159677. 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/QZRP52301195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9888edd0c32b3afe97afaca2ce4add443dcd919e9b7c6131f0ca8277d7c0f4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZRP52301197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2394a9e4cccf33afb2147063dbb8aed6cbec134b7e7c88af2dc9ad1c70a07842. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZRP52301200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4512dbc25d8108a731287f0b45d5d340adc33e67b9979edeb49ef3790ec93d40. 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/USWL12400676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d6a58cfdadb9341f840f1cdab9f7f185b7e71cb474fe563a5478653e5e5485d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZFZ72499644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb807fccc484425b5d1cd8f93b193e010f320ba12ef64fc622b230310011a03e8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZMEM2302430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2adc1dbe63d2e7f985c50e05260b59d05a277d8fd334cafc0388f241e3bb87a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZMEM2302431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb3c1b8e457e0fc997097743b18f73ccaa9f917d13f22068e9db25f89bcbe83. 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/QZMEM2302432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3c60453b574c39c2f89c52043e4ad375bdab5669ca2042f06430686c6458a0. 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/QZMEM2302433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c734622d638db92d1a285d2275d6be8eb85673984d5f9b446f8c1b822adef1d. 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/QZMEM2302434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779a29f0a2a70a17f6d77d9a1074e343d52b0de0392ed11e30618acfc13e9279. 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/QZMEM2302436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ddbf54dc58a1268731bcd93c3860364cff026e20c4afe2441b0594b70b0668. 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/QZMEM2302437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x427e01db62f8712df181a3edaa1acb149f8b4512d6959474c381afef9143285b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USWL12401931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4512dbc25d8108a731287f0b45d5d340adc33e67b9979edeb49ef3790ec93d40. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USWL12400676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf364ed69f7b522bf600015e759928ca3772c57aa554d1423053d2c6b76e925fd. 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/USWL12302770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce5aa69d26d613dd5e937819f2c96cefa3a53de7a346b3669bbd3892f49fb27. 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/USWL12402997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e09b8f50c386dffa089f29aa8bc633c762f2fa23a63e94bec82522bbf69e74. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZNWW2261091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x430b63c92e6604452249d278957c8273c8a87a86fbeb3262e0b3acd42401bac8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZNWW2261092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d634ae6cc62b005b64ea8bf96cc9a759b44c1d62afc689bfcb59e95d13506f2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZNWW2261093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d751675998ddb3ec3689bc87ac4cc9f84eb32cc86cc58da063dbe341e5aa66. 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/QZNWW2261095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39b03cff595c30c16bdc58b6330b423366dad791eca86b5ec0305b6b29743015. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZNWW2261098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f766545e234bce7cf69f57085bb43bba5d9f2acc60ecc75124134657c7e1cd. 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/QZNWX2550275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e1277392eebd19b154f2a8fe0d02182fd8e46e70e75d2f763e9dce824ef9c8. 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/QZK6H2534178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde4ea5b0bd9983b397dc75e518617dd1ca030a062db8e7ca4a5f09e561753a73. 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/QZES92531719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x427e01db62f8712df181a3edaa1acb149f8b4512d6959474c381afef9143285b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USWL12401931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf364ed69f7b522bf600015e759928ca3772c57aa554d1423053d2c6b76e925fd. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USWL12302770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42214a2f32284d61dfa83f1c5baccd3c3c75e91da596bbe7b950fa518a2e011. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZK6M2305733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3669058cb8a0d91862824eebbd661ea32b0cb8e96a2f586c292c63b89bb9d33d. 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/QZES62338648.