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 0x6ae45c6924d1072230de3cc0cb618ae0349044cac8add94944b7fdc09ff6293d. 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/2af67e5f-2df0-4f39-9656-10964debd256.json and https://artists.proofprofile.net/proofs/artist/2af67e5f-2df0-4f39-9656-10964debd256.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 0xe4a397d28ad6e283e5c1ecf6b701a9f262c4ae6e8b880e09bbb2f48aa3d56825. 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/QZTAX2441623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d523b3f9a12701b507a025e3035532fc97cfbfbabf793a2ea6a511cf48baad. 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/QZES72496314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ff567effd55b3af037c22809abbf1d1c07bf0a629d6807e89528440c1dfb9a. 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/QZNWX2258330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedbf5410ac255ee64462314163192e41699e9e29133c8e9d315c9ead279349f5. 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/QZES62115829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad2a77a9c6650fa3db437fba55dd0363887f1cefbb7b81b8cad25f9c54af589. 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/QZNWZ2043171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf905cf4c21eb89533866ccd7acddaeaa00008dbdc0ceff74803266f101f587aa. 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/QZES82054312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3d672a6338b61810d478ebd007618102bc630db32c5ff75d1e0c3605874e5b. 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/QZFZ42025873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce8825de87b970e9f2d835fb8683785368658ad0f94a6c0f877e1ae687f240a. 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/QZFZ42046598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d7eb460999cec73202aae89c837d535b30ba37b956da0812cb8d073cc1d91f7. 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/QZFZ22093257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43901076a7b13f198b77d9c711b9de9d7b70c104f159e949846202f15994bc30. 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/QZFZ42046599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad1c499a37d4d758d010e47c092b14317564148c0298c3184b7039140f0e6ee9. 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/QZFZ42046600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7e1d8871f0a880cac3d36f975f6bbd417647a4da033cd046905514e477b1ad. 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/QZFZ42046601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7110807becda6322be9bea0ac6bf6b9bed31e4df25f240d84831663eaa466e7. 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/QZFZ42046602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9383462e205d72525e0695eb59e333cc5f046644b996d3e36812c6d570885ba. 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/QZFZ42046603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b6a88f65de0c427d2a5dd7872c09c391a88abaabbf6ad511ce989fa14d2d70. 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/QZFZ42046604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69406748423de202ca1649d3c343bb22acc55c188af79d7f63b5a8e95df7aa4e. 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/QZFZ42046605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x603b1a414f7adbfe68bae9f37899f5aa27382029c06bc314247b3f99a7c06dee. 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/QZFZ42046606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c512d12550f36e5a665d6b8106f2cd1a221b407ab519caa995d4204a19fd27. 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/UKZGC2204507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2e11b0d8f299cba5514727b43eb4684dc3f5ce23776d35b8e714c9daa660aa. 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/UKZGC2301073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49defd37d621dff03d91749afdd931cb9c1852daf71d1e416e5e5c1114c2f4aa. 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/UKZGC2300914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x427bf67e14cbc7e59ed0ab79871ad2be48dde111a1069470a1d8fbee555a5fc7. 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/UKZGC2301074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24021122ec81401a90c272db10170315c13daf9d0cd32071928536ea7b8b7a29. 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/UKZGC2301076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa34f52309f3e37e36afcf1cb9bc05b64bfabb0ad8d7b5c907f48aeb7c8d370f7. 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/QZK6K2023790.