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 0x8404aff454eae175b20fd34242973545641650f388998b2775bd5c1f90340b7f. 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/325221c5-adb7-47bd-979f-0c614d0e8ff1.json and https://artists.proofprofile.net/proofs/artist/325221c5-adb7-47bd-979f-0c614d0e8ff1.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 0xfd67a5c2f0b8d0dc6008f9d237363790fad0633b2bdd2281dcb25404e2f43efc. 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/QM7AK1500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd7cc329c94b7365bb5cde2d798acb26307f8971f1c5ab0d3d6a2e20ce6c649. 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/QM7AK1500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220cda7f7821b5535008322bb4fcb8f4e576aeba2ff511046115c4fd238e30f2. 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/QM7AK1500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d7371a29cd96ca552f4a7ab4aa7f4af1c8a7b73fd5795e8de8527f97e9138b9. 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/QM7AK1500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39732161fa6155847ba75019e92b081d19f432fdecbfb2b264a29e8f6782b29. 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/QM7AK1500022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0990ee5544e9388d663e1d16b2969de4997834d54f6ca77575ed25d4395451f0. 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/QM7AK1500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac9a0bdc82647e8224a82c584395e6d99f3f5dd93cb5e1f3e0b129f42423a98. 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/QM7AK1500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5216b0bccb4ef0469353153c8e7f7c635e175075de30abaaf4d26b8af8e04051. 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/QM7AK1500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d2e6ce4a66a4e4354ab301a488832ac0eb8687d23377021be2a88f76171f1c8. 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/QM7AK1500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x249ed27f60e1b15bb0a508226977950780f70ee1d66e25a3bf239d9ad76d5970. 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/USCGJ1466748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f101f4c52e8e6d58bb19d3ed83de1dff03f4402ba2879415dc21b79a13b5e10. 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/USHM21412009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f140bcd9f3a099f1409039c55e92d7f3e320f12c6873737b0382d9225a3c3d. 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/USHM21473071.
Lento (Remix) [feat. Jory Boy, Kendo Kaponi & Cosculluela]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8f5c6cf8a094b4a9ea0388d74b393f2bd65c3d8a0c125ef6ed1fcd7ad5c6540. 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/USHM81467114.
Lento (Mambo) [feat. Cosculluela & Jory Boy]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x325730c258fa3d2a4aa78bc48989984f3da745a96c186e856d1253f7538f06cb. 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/USHM21478473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a0ed36756281b8e9c6b4046191d146bc995c4e7d829541f4b4f7a38348a082. 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/QM7AK1400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa77ad6382e838017de603ab1eb8c3dc5d48c59a7cdcecb62d207c61546fee353. 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/QM7AK1400003.
Lento (Remix) [feat. Cosculluela, Jory & Kendo Kaponi]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8f5c6cf8a094b4a9ea0388d74b393f2bd65c3d8a0c125ef6ed1fcd7ad5c6540. 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/USHM81467114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f140bcd9f3a099f1409039c55e92d7f3e320f12c6873737b0382d9225a3c3d. 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/USHM21473071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f101f4c52e8e6d58bb19d3ed83de1dff03f4402ba2879415dc21b79a13b5e10. 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/USHM21412009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc83e01368dc3e1f7ef8421fac4dee37588d37e86c455c6fad9a8ba66d5af0f12. 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/USCGJ1454786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6087a0f1e28c78db05e7792ca3ab8e28455124890eee4e146fbaa2d0af46a61. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/USCGH1482482.