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 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 0xe95c6bc72a39beefd48578db633492aa3f432cba5626686c848d62a39696347d. 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/efb96f57-9790-4485-b4fc-1bb1d266cb2c.json and https://artists.proofprofile.net/proofs/artist/efb96f57-9790-4485-b4fc-1bb1d266cb2c.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 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 0x771fc316d62e71010b8d42de512a1dceebcf8f858920f76a841870442c53ee88. 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/ES5022301041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa839d17ef668c102b166dd7acb1d3beca32981e85a3c073e63964b79dd796678. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMDA62377938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba101476b6e1038554da1185b92bc3f0f38d2fbd5b0971e364fccba6d183c275. 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/QZMEP2387124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76df5b11c7c6c31172cc1edce2ff0c762f479c68f25d3d3b0d0aa197370d6a5a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM6N22195738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0ca5a20e7fa0020ac4117689a0c5387700c92a8e7a094389b710195a4afe80. 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/QM6N22195737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab16dca4ad28b7df91026d9764bffebce5eb15f17ab177e8df19c44db104ed6. 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/QM6N22195739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde831ee40ed8f51fb2c4b6074a38b3d06cd20fcc5bbbfc52481f0aa2c94467d. 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/QM6N22195740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee7b47053d8858dde24014c631a9a68eab6428adf3d35c508dc2ed54576311c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM6N22195742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab7f5468879c51dacc40ee238ce6491c0288422c28107d0fb124dc23e5813e1. 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/QM6MZ2165204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa54401add8d2445f6e625c2a61043807cd5f73db0009021682629a09a7630d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM6N22195743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6033a7064bb8a08e8b2e0905c3e74a00e3486b8b130afa53c58e9c0041d21377. 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/QM6N22195745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1724d72b0f4a45a6a28f22b5fdc2e6637a9a462e5284868060d2eb921e081045. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM6N22195744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f92d5b8336c10d5c6921493a13e6b3958958313f853fb89d3a5e5a9eb1d42c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM4TX2123232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a9818544fa0cdd636c193b30730ec6982425be5ddf2ae0a0341796daa51608. 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/QM6N22195747.
Cayó La Noche (feat. Cruz Cafuné, Abhir Hathi, Bejo, EL IMA) [Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe36e8b6b4bcdafca7e6622730adb05c76e3fa18df48d5e91d3e1997c5759c13d. 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/ES5152101308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f80264ae64335316a295651af4a247b19f42b1c4ba75db6f7463a0d56120cc. 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/TCAFE2091854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc120e0a39930da9e4b45a812dfc44a5c4dc0731160d8197682c3863e6aa851. 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/BK4DA2321251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771fc316d62e71010b8d42de512a1dceebcf8f858920f76a841870442c53ee88. 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/ES5022301041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x695f8d9d579e97ccc3540353c585babde02f21814ad51650d1f11bbe6ec98b9f. 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/QM4TX2311478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76312863116ca44a856dee72b00641cc26227a4ac572063bb65af861aef589bb. 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/ESA011628377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd9cab1aa8287496d4677d23a3fdca150afe79dc7878d81267705dc09ae5eeab. 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/QMFME2004750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135db7a8a7910cdcfa55845ebb05414fc6519e58dc6c09b293c015f14dcbfdf9. 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/ES71G2015261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7543b9d90033b46afae47c9f5a8e72f1adc6e1c0414d105c6851e27f3a25fa32. 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/ES5022201182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba101476b6e1038554da1185b92bc3f0f38d2fbd5b0971e364fccba6d183c275. 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/QZMEP2387124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c00211163bc09231cee3d84b5d087062ba5cd68df71998b955f6c5fa19f7e5. 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/ESA011791271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0a9dbcc7773551560166c67d1c806f5a7c18506ae5c96fa24b447919b0d08d. 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/QM6P42144941.