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 0x34f205468c2498f4633b384516a54b55a595bdd0362cf617ee889b8ae8fab8e3. 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/d5592bd6-2eed-44d2-ac5b-c0e191fe718d.json and https://artists.proofprofile.net/proofs/artist/d5592bd6-2eed-44d2-ac5b-c0e191fe718d.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 0x98420ba0e58c8d6da62ddbb354eea6a7405fe905e93bdd829231230c25b0dc29. 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/US7VG1761442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29872d755be6c4688c7bbaed5fa4edef0cfade7915874681c89ee7676b7c47f8. 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/US7VG1761443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6fe26dc9eb609a4ae8ea50b19215f2639e2d6f7817bb0abf3c3f93a7d8450c. 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/US7VG1761446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232640e7d477095cd73b714656baedb1a99c642d71876441ee9c50ff74544068. 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/US7VG1761448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58bee02a13d2688688d8e414af0fab601bff899e37c68a8d108a8573040d896e. 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/USHM81500234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2fe288d6b58bee5e67dc2ae004ebc1d10b68659c2cd45ae0cd01e9a3b84e6f6. 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/US7VG1761452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x310b81acda2efba85bce05a8a61925bf113f9d4f1cf605f83fa5909f093b471e. 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/US7VG1761457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x044955c842d38b9a707f16ecae599debbcc84be8fb65a030810e51e8a3d4f24c. 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/US7VG1761459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a2bc30b701d1200948320a779eb64626c791d2bdab92564ea5097e23ddec03. 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/US7VG1761460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7785e2450ee2844a1b2316f21ec5d5f1b0dc769e4da23c4688cc223bf626719. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US7VG1761434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f1b1b5b0e9217aa8349658d61f8578ea5b81bebe3d46888059e5f915dc85bc. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US7VG1761437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d54fa970b2da57b20bf3c830cacfd78e8ace034fe50c3fecc6da53cfefe008. 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/US7VG1867659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c5647cd62d783595714aaa66c73b94220758d33bd6d4a2e39c4259abcbeb7d4. 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/US7VG1867660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0380870df13711f7e5fe97965dcf4e7fe2f05825ed88bbd8eea234ac2c1bd1e9. 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/US7VG1867661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e2d766bd2a459224f5697338e4384db6967b65cf4c9c3624e7545024ade6af. 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/US7VG1867663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff194da456806a98762ee3a9967e94d7d00823c058fbdd9eab792ecc6e88da6d. 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/US7VG1821808.
Grandes Éxitos: 15 Años de Carrera Musical (Remastered)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ecb3522a4ca39311a592bcd80ec34a3a75de39b38cee6f5709062ea1c2718a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZGLM1905465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd28cf23718f3d55ad8703e5c639c272b8fde5f727a468ff1f5bbc9ce4291a12e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZHZ52176453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c063544f2c8a9e643358daf316e25e0aecc1c74ac2ed7f0f5ab4cabdfc9ba4. 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/US3DF2271491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x748f10ab692fe908b9764c1f5940c9243a160ee13ea26443fc702746133452c2. 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/US3DF2271439.
La Balada de la Tristeza (feat. Ali AKA Mind)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e524b262d354f567e4585a6d97facf031eadda6a579fc2f4f147aaba311b6d9. 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/QMPKX1626534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x586f4012a96d54e8d79432b364b1c3f55cc5c3b4d123bd0a8345989d56b7af2a. 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/QZNJW2470622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f4862028d7017728fdd6f4c0336be19ac0e98ab07355a1a1d0b709b07e97e4. 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/TCAIB2430887.