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 0xc74a7c7d3bc3b26b08921495b1d623e44e8ab66d7b845fcbf76ea335c6eb1664. 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/0edf1dcf-93cc-4db2-9d2e-a5c3cae927f8.json and https://artists.proofprofile.net/proofs/artist/0edf1dcf-93cc-4db2-9d2e-a5c3cae927f8.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 0x828c34267aad508c95c44061f69f61cccc29a0fda768398837aea7f570b062c3. 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/AUMEV2445785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3cc1cec87609b60a55142445e3261cd59ec6bd0eb66af9533447deca658234. 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/QZK6Q2146130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d6eb8848a3f09805e1e8b7ec87c81880fb511e501979c837fc37cc9a9d434f. 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/QZK6Q2146131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac27e628f97a08799a14b74d94afd7ad429c1ef4eadb84e8e7d37e00726a344. 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/QZHNC2125321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1a906da45dace723247651e1398ed28cb430b3731fbb260593dd929abf6ab8. 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/QZK6Q2146132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620f7b58d467b0ce7892dc1deef2927a59ae2d67862252705c9eaca2f80044ce. 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/QZK6Q2146133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1f1fd3beef06efa368b71387822186a8fe6771adf038a65baabcb2b67e45ba. 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/QZHNB2101171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ee02e1c8d060f980924c63e9b408e24a1a1277608a735f78ce5cc448f1064a. 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/QZK6Q2146134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ff78078162818a2a2c3a8aa26c2b715c1927716172dd96f9c270376473e1b7. 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/QZK6Q2146135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c68f52388dddac7be25e70f9a864a07ac9ce236f706b0678c3341521a3c070a. 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/QZK6Q2146136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c96615f60e93f6a2356ea6dcc1cc006a7fa0948ccd8368a24a1fbd0ad82bbc4. 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/AUMEV2363625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27640147a8e91a843aaf06a165d3ad1d5ce086aacd342cf94137441546a0fba3. 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/AUMEV2328567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1f1fd3beef06efa368b71387822186a8fe6771adf038a65baabcb2b67e45ba. 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/QZHNB2101171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5346efb77db82871eebc0d2b0efcac234c06f0a1e613fc352759100370ce1696. 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/AUMEV2466007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31db6f915ca0af1a8078ca2e79ee61bdb833caae09efe090d21b92bc95843ecf. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/AUMEV2466012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4747b239e1d21c9e9849e040895295a6303f84fa8ebd0b99ad3a0f470f994fd8. 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/AUMEV2466014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b835d5170a7e6f8fbc1a088d6912335c3a933b52d9be26d3121a2536be9705. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/AUMEV2466017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d2b8c6791e2220dcc70622b34dd6982ff08be1e23c7bfd679ba7e8247a9427. 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/AUMEV2466018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828c34267aad508c95c44061f69f61cccc29a0fda768398837aea7f570b062c3. 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/AUMEV2445785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb26a887011850c1abf911ddebe28a53785910b96afd903516a69b646bc703749. 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/AUMEV2466021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee96a96480b29558f62ede9fcf0a912bd3ab5197444ee2423022be54cc570f0. 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/AUMEV2466023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe06eafd015ee9f3a319af8d16fa417010b5c66b84e9c430a8a74d4f1ae61901e. 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/AUMEV2466024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036ada7c578e0fa3da7826ba460973bbdffeae59f7428f82771ae8798a5a3d5c. 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/AUMEV2466027.