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 0x78d8a484b405e63ad6c0e6e929d6ce4db3072aa46e65da8c0358cee7a172f1f5. 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/88d4e127-fa11-421a-be18-91203f2526db.json and https://artists.proofprofile.net/proofs/artist/88d4e127-fa11-421a-be18-91203f2526db.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 0x8f6fec6ae6dd763640c826d009f73f66d6c29ae73b6d99203c1c7be227b08617. 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/QZHNC2471545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd90dab6c0795aa54bc7a6fb674a384dc27155b78f32edc55361cd8360bd6572. 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/QZHNC2471546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f6503a0587e2fcd57b391f6f22bb299b6b364b0a8ebf867cd22d7b26adc39d. 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/QZHNC2471547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbaa3678eaa46f03e8f3f2b08bca701be490ca19f060e7f0eae46d168df75a2f. 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/QZHNC2471548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f2126ba2d727eec3187a15aad79a98f203a156a8d7a4faeedf8fb7e46ea6b9. 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/QZHNC2471549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43bc74c44f1d95f879620d2a670ddb3dc220784ddab93addef7661e5b39b5500. 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/QZHNC2471550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b9f089b49157f15fe784f77f766edf80b11058eba61e0123f2d5b0693afa0d. 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/QZWFE2372577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2de346b408a539533baede9cc78f0359e81d9a140cf567b6ab1599838b21334. 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/QZTAT2352347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf36a25ef192f2a5294616a74b34816b11b2d44f43c3def8c36e45fbe18ed1b94. 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/QZTAT2352348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb692e0e329faa69c07dcd68e6cd9e76cbb5dddca68588db8920a0cdaa53ccdb3. 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/QZPLS2371640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c16ad5425d523bce48f1db99941dcf6567e960c0b9ea2e9facf525d32dcdc5. 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/QZTAT2352349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8166165354002b3c4000456383cca173752eb8df55eb32d8880aadec7badc7. 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/QZTAT2352350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb692e0e329faa69c07dcd68e6cd9e76cbb5dddca68588db8920a0cdaa53ccdb3. 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/QZPLS2371640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb38f2cab49696dd54d08ace010837271c0a0004950c0ed7021852e4def2593b8. 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/GB45A2400166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b3d6cf4af16862001ed3c7ff8d47e9db3c38219009fd06c56ec5fd79131eb5. 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/GB45A2400167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f9118e976f7c5f8181cd1436e0bdda3e26ffd2bba97c0e3959f15517b05b48. 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/GB45A2400168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1ad35373efe5a76b1a7992affa7bc258911dee8cdbdfe902f562ce585372e3. 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/GB45A2400091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf63e4fb7ff687efb3ba1d0d2f91c84b93a0f404087aab081d79f16329bc63ec. 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/GB45A2400169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f4047514df5d51a889c2eee268b1dbf4d13dfca61d3dc23313381a103524350. 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/GB45A2400170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76176c6e2cf5c2c698d95b8e8580b36e2ea4037e95aeab1738c71c2b9b228eba. 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/GB45A2400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc76609384be4c3ce1dd98211a7b6d2b1ceca73a29b3f6cc0461d2edc7926e4. 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/GB45A2400171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe339f9d4dca4db9ea8829943d13086a79b93c24393c7d20db078aab142ec7acb. 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/GB45A2400172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9493ac1b21a9dc835fe70dcf7fd8b68c9a2f883057675fdcba8d0dbbe34ff3e6. 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/GB45A2400173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0423ce8b81217f33b8077158817ea8401666e3a031675a83599bd0151c862ec. 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/GB45A2400138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f7c1f3e153a18c9ef630f33e2ee45308546a91c099455e092ec9a9bf2778de5. 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/GB45A2400174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76176c6e2cf5c2c698d95b8e8580b36e2ea4037e95aeab1738c71c2b9b228eba. 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/GB45A2400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x727b77f1c4793171ae24da8c1c4fd1b0715d3cac3e2d2eacf2f3c20cbf459ae6. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DGA0L2367460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8158e4c29e27f3fff9f5dc76775cb0b9cb801df921ed179f2a14f9aa2514235. 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/DGA0L2367461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950195427134d9b9d8b09a67c9df0b930ab6a79107f0975096774f36321a7d40. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DGA0L2367462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd788a065a5db9ff4e1500f360a6bf7537a8e6ead99c0767b673292514ea23a. 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/GBLFP2438532.