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 0xc1e669ecb26a753aa9348a2242ec653f3ec3efce38a26bde3c6a1a99c5279841. 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/5fab0b97-5e7e-4a07-bb92-929a8c299ce9.json and https://artists.proofprofile.net/proofs/artist/5fab0b97-5e7e-4a07-bb92-929a8c299ce9.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 0x6eb51eeeb63dd4b007d495016acd20c761d843167205df27893e9a6eaf03a2b7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DELJ81769123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefbf04e9baf5943e739de7fdbb87317c215b6586d475696ecfe90c780b59f614. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/ATW561900002.
Wo du mich findest (OneHeadApart - Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088ac46c4d92ef08177ff4f0305e117df49970b743a16ee716a9aa8e15be7958. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:11:23Z), 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/DELJ82011922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f5bfbae053bb315c3fec784b8fbf40540c6f0b42bc58c4f1e94e7a0cfcd7974. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DELJ82035573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x824293b3ffcc9ae1b7a34d231b60ca0c5741ee25bbdcc463e231f20c14e24a97. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DEZC62041241.
Wenn ich Dir sag' dass ich Dich liebe (Akustik Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e68a7cf68335ccc53d05c340e28a04537ffc7dac367e6ac7563d50580b9a47e. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:58:27Z), 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/DEZC62116647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc121be2e89a8e3f2976cbf015c6cb64f75ba6b7f92aa18a6e9b3f30d696867e9. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DEZC62129388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e521f3c03647d29e72fb2048777ebeda7bdb24b9ecf46a4563bdd4fe364059c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DEE862300910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc497abe43b07c37871b6988da8b56d1002b8f90084a82d688238ba678e5468e2. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DEE862301205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b0efe5d051b130a752108dfbf1d225f5834ad79e329709c39915523c023e25. Chain 2 (Bitcoin): anchored in block 957833 (2026-07-13T09:36:32Z), 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/DEE862300599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b15dff7624b2dfcdfaf20fab8738959ae0fd3415cc8a7af592e20fdd4bf91d. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/DEE862301299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedccd5e924fb24821233ab0a5491238d899cd36e22b1b15a7b61d72084be9a38. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DEE862301300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323b4ef89ebc967432a10df11798eaa9838b37a804f935082c2f878d6c6a9dd6. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEE862401158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f99251c13d02373548a58bb3239a06ccfe5b053f26372776a3de9c8d7d9138. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/DEZC62597277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35798fe93fc68224e5a39da4ab2cbaebd0916da67c231e0dbcc7350aefdb29f7. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEZC62590293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45da1d0d1455477b3d148e83b1269a3dfa4010634de4a522f7e0cd8468fc9f0c. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:07:30Z), 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/DEZC62582961.