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 0x5abda1ef86ad28f6fac640e1ec69b0661a0b90332d6f17ebc77bee244dc19f93. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dc96da7b-452a-4662-9bfb-a74080d214f6.json and https://artists.proofprofile.net/proofs/artist/dc96da7b-452a-4662-9bfb-a74080d214f6.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 0x2c6248f6bbf6cd74f91d4b7a5cd20ca99761bcc34186f18cbfe3855fca845546. 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/TCAJJ2585753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd3b3ac829acec07416955a745feece2698e26812920d807aadcda68deeb6557. 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/QZHN92525763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0047c4663ddc97a4c8d415ba500aec43248cc6acb8c811043539bc47eba7ae8b. 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/QZHN82595656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ad7de16cf576803e8d3b93bdec524922ffc5f7f915a79333925c7352aee147. 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/AUBEC2508611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ddcde85d4bb3f794bb0f94cdb063e603e4acc82420c5449ea40d89818293101. 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/TCAJA2483152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94ff1073dee3d5b817d73ea8c106db046c42f8c63b4e159db4a9f32a285fbd4. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T16:36:59Z), 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/TCAIT2469355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48146e891a8a65dd78df232ce7d3aeeb52c48ed7701623840efc2a8b701ca893. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZNWW2449639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18becf1e4bd5192aa83dba12d3f7dad32e472b757df83e7465de92d35da2fdc7. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/QZNWS2466224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7987d2c83b391a81b650585a71ffb955c6c2edc12c9e0e839feb66b90fdefd. 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/QZK6G2455255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59fea4958fbdaa3f37a7921f17ab069f87e71c2484ed8f6d9c9a10b9634ba0db. 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/TCAIF2491684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c58d8b44a2c185c7a125e3e0721e9be199efe83aaa6c508281306b9bf3a07e. 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/QZHN62496141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f179e066431319c54437fad5d42d05579d29fee50f2dd09111d8167b4dd012. 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/TCAIC2442626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad23ac11e31814554fb4952665303c7d8cc891bc665e2917d464db3c68b9362. 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/DGA0Q2396557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c930f13d1998626656e36241b180f12f5c895f30dda2d6b5745cda2d86d6bef. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DGA0M2355570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x102c00958fdf493abb8e7639cd505d171764b5ef7a1e5083438acc5e1761ebc5. 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/UKJ8H2303401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8014cc85ca269881e6a016772cc5eed34d521f6202937294f86aa0d11ee2d5d2. 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/INSD11904503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3adfeb93f0a93dacc037d013fc2cb0d15f3e0f4f080de2b9e01ceb596ec28f. 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/DGA082217082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27af8dc1d069af347c77d1b550165ebbbb3878aad095d55809bfedbf9a9a59bf. 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/DGA072236160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d22abaee03d1eced81c466dc74f8b71eb8360ff7cf14824f561e506ec87951. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:39:15Z), 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/FRX762223486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dbb5cc668bcc70e4ed2bd39ab998763297f4c4e2163a28dc94c85e0901ff244. 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/FRX762210005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74dd440da593555ab8e82a5cd4a3f23f73ebea2efb6536289762c14b08932408. 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/FRX452243941.