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 0x18f205e92257052c6c4e4b0bef82f8be4b555a516999d8d96ac29aa6ed3910a9. 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/e4867935-7d09-45ec-9eaf-0004e5bb84ea.json and https://artists.proofprofile.net/proofs/artist/e4867935-7d09-45ec-9eaf-0004e5bb84ea.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 0x9147ebe51a0a60934ac43da6c905720c77b8710d289466628792d234445675a1. 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/GXBNP2421325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b807b12e78b501fcdd6bccd5e6bda978a6ccc5bff74dab440b2e07df28ad89. 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/QZQAY2304423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc877cbc13849c6b1776e42ad8a9084e4079a18c62602ccad400035a0accd7b5e. 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/QZQAY2429316.
Muero Donde Vivi (feat. Juanka El Problematik)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebfa906e578360e7cbaabe94964ebd76edf7ca25929fe551a02fafe294ba2ce7. 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/TCACT1667609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10025a19d73d74ce0acfcd5977d263a191c7b45942faa1783a30f2c557aa8f6f. 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/QZ5AB2439403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa484e5d0df0f09b58a91fa8daf3719269a06ae05c8bb75a65d4ff31a90223ccb. 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/QM6MZ1909358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa484e5d0df0f09b58a91fa8daf3719269a06ae05c8bb75a65d4ff31a90223ccb. 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/QM6MZ1909358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7baa2b1e23371e2ac73c19865998c04f6a1d79569d4ce15005f0a898653443e2. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/QMGR32162541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd623e3a2c0626f15e987cff111d8b9666c492ec3cc2ee0b84b13819b872f49c. 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/QZ7R42050662.
Esta Noche (feat. Juanka El Problematik)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a648813214749413766e47f74abf3facbeaab8af0da7a0da9eb338205adebc6. 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/TCACY1733139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x354cc3eadedbb2095d2a4f16e0b4517c9ae74ab2de34fe7a9fec14ccf20224fd. 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/TCAEL1943011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x795754a7c8c32eca803d044877c100cd3ee45b1090069bcb42dfa8cf3376b240. 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/TCADA1780775.
Beat Killa (feat. C-Kan, Juanka El Problematik, Lyan El Palabreal & Mozart La Para)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf98d9a1094980ddda03f2f5fb5d13c69f76a4c2bea7ca110a209ca078c2d5b9. 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/USUYG1175139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f31374b27f8c4d52ca90e0cf535473573f49c5008e2714a45976a098b3acc4e. 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/QMGR31975034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156df6cb457122bc3c2bd5f94cb29cc7588b1656f303c61d362e55b6448629ea. 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/US7VG2076207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9b51df05566044fd1d18f53dd2823769142bd0de0591d8953d21b314ac558a. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/GXBNP2421330.
En Nadie Se Confia (feat. Alexio la Bestia & Juanka el Problematik)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c231b57837ea7ac75cbef58e60e0669d0fdb66ff4b74eba6d840e6c8702537. 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/USCGJ1525895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90a81dec3142fbfe9fc215481430c7a1aefc3df4e298b51787ff26821349a88. 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/USQY51752356.