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 0xe444d4a7f56c217b2e17a457e080345ea42ca53493c1bf2414091c3da8c0f4c0. 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/5a1b2d0f-4f47-4155-a874-e817c909cc45.json and https://artists.proofprofile.net/proofs/artist/5a1b2d0f-4f47-4155-a874-e817c909cc45.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 0x5c7e91c1620dbbac8d3bcbad820e2df4004ab520ba5b061695a2a7333f66e635. 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/GBLFP2405987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8fb1fcb294e0c840ebdced7cfcded1409086313a3d148e786623ef99cb06e3d. 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/GBLFP2336806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb255e32c5f0e02c9de8f3b08e0cdd890d7d7a63bc6e3fd2d0db737f606fb22. 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/UKXN22484036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39bb028183f177a4f930050e43265c5b07ec8bc4652b908bbff209ff2f77c4da. 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/ES16I2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe09da6bc23ffd3ae36e252bbad324e05802ec824c8a28f094e51de2449c0b264. 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/ES09C2200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x870ee55c76a1c930b25a8f41f110ec793952028db3ce23e92fae76704837693f. 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/CH6542140275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67910b1d26bf3d695d7c0291593855c953ea05aeeeb3561598e2186cc65564cc. 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/GBMA21906077.
Kiss You (DJ Valdi & Kato Jimenez Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6706a2d3ee816416713e7ffcce7d2c03209a7aa7c494025a99243a5e8986b481. 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/ES5051400363.
Wanna Dance - Kato Jiménez & Jesús Sánchez Summer Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f6d5235649a3e4c814abddec97bb952012b1e5cac349997cc0ef9ef1f57024. 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/ES5051300519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe017c1dfda5fde53f40c266cc03bd8b419b0520e0cee13bc28eee04a755e87fa. 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/ES5051300062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd0221c9fc89165434192443869fde62187e3e3cc39e79901d954ba9083338e. 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/ES51I1100044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f188404a7309e710755387d1ad035ee0005c7031ea9a9a91061639ce92c7db. 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/ES51I1100002.
Dime Que Me Quieres - Cristian Deluxe Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1de8492a873293d047843b246297a9d561238e4207f756a3968badd3c4790b8. 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/ES51I1100003.
Wannabe - Miguel Valbuena Elektro Club Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19889f2784812cb5dc84398a2ce3abb7378c660ac8bccbf221b8427682c1429. 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/ES50A1100696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6327aa25561aff9727ab3d5aaf35f72257a35d25a138ea8d5fe8a5b8084cc58f. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/ES50A1100192.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea4aece90762d2c441e291283dad304eac0ace631c52f0886f2cfd7a3489f2ee. 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/ES50A1100695.