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 0x9186c3c34da215f66667a8293a368d9ecdeac34c5c3391abd90b8be762194bb3. 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/1c8d60d2-b7c2-4767-bfd1-82e347681214.json and https://artists.proofprofile.net/proofs/artist/1c8d60d2-b7c2-4767-bfd1-82e347681214.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 0x26100637f68ec0d727d92165bdbe97217664c08962049aa4af3e3c72656e6177. 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/QZ2J21505703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1035c6958c58d8e83abf9267bdd3779bb87b524977fda809eb1971d34b5880d. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T08:32:12Z), 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/QZ2J21505745.
Te Siento ft. Alexxander, Coron3l, Agustín Ramos (Parte 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed10b02084a66a023cf498ad23cdb89e6bea5754d37eadc2b2abc6bd6a69be4. 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/QZ2J21505747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c5169051d44f201f7a7e7aee0f3e3bec3d7057c2aac949d15913bb7f31190f. 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/QZ2J21505749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b989349dd3a5e97818386d808c0a979ed6b533e4faf0162bcd2116a340775c. 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/QZ2J21505309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48634b39d99efcf8394d06bf29659ae38459bed87825b4493062384cee433a5b. 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/QZ2J21505199.
Indestructible (Remix) ft. Anmily Brown, Oveja Cosmica, Ada Betsabe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5da6ab192ca9db537c24cb8f5262e942ec0ee765e5c47ebc9c168f2a32b3eaf. 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/QZ2J21505676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6697be8141f862eea102b11b94309f1ae8544b667d194e53ff7f675097c41dd. 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/TCAFB2095338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801c232951cb5a8c6ae9ec82bfb02a5cba4d719b83da21ad30f04dd94e75bb8d. 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/QZ2J21505582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef8be050ad7fe29e787150cafae6c5abc7e119ee635d7c4bcfce0729b69f5ff4. 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/QZ2J21505585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe814635e664c3e61e6f390996399133302432cf3a75b7c04c33c2a749ee1bff9. 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/QZ2J21505586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d011a746b64389e5768fef79767c9c9d2a2388a070c270fe9ce5cd1d1dfba37. 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/QZ2J21505068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ca6d4ffd0d908adfe71ea44cb963ea0c7cea39fe9d4623161c87351713ac83. 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/QZ2J21505593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b0ac44e7813a017fcf5a195f37e5c3c61cc9fca3b9fd83091dca8d78f6f523. 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/QZ2J21505073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ea307f664ac001db23746dc1e95ac851dc494a34653fe38f1501beb186e162. 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/QZ2J21505596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aecdc25445efe50a4392ebf4f492d2f03ca47871d3f393b11c28759301097d8. 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/QMGR32218987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ce374b4ecd7e7908055eb949e145cdd29396594ae457225ee5ecb11c3df262. 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/QMGR32105797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b41aacf0fcc6355341dc2dd9e249ad9c44ab52dc9364f7a88db0cb85da55da. 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/QZTV32360349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9006e704762e0333c899c073b842688185159b7320b0d2aa93d9b84f04c7c0a8. 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/USL4Q2165798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfedf65d794bd6264d666d6f98b5eb19fc2bab87751b0e37243c0720b5898cc9e. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T16:29:23Z), 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/QZ2J21513340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc17016b39211e8effee01216d34443aacba5bb8281ba25ea9f256f778ae9f6d0. 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/QZ2J21513342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9976409929b57b6eeed3313c759727c55fe49a462373a9ae3524e68300460c. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/QZ2J21513345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83095c137931b4da30c407702d362da65804300b515a5f85f75f78d8f06b8f2f. 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/QZ2J21513348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f5c264f74724a6b6021e1bbbaa8fdf6e7fd906dadee2302210096ce443282e. 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/TCADS1805929.
Leo Presenta - Misión Posible (Deluxe Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e51f35e6226e816393c1447950b2b5659787712fe25424d77b7d3ebcf3eb187. 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/TCADO1891801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0507ad558e9721625b5602d1723ea1e99cc6a4f1a542a64ff58690a7239b0ea. 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/TCADO1891813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x594509a5b36fb9485e5c0aa890b5bf54e833222bfbd4e5172ac4356dc4fe178c. 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/QZ5FN2488986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10cf55d7aea042c606563704ef449362790f8482f004b6705e0c5c17e820c9ea. 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/QZ2J21506194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26100637f68ec0d727d92165bdbe97217664c08962049aa4af3e3c72656e6177. 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/QZ2J21505703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5da6ab192ca9db537c24cb8f5262e942ec0ee765e5c47ebc9c168f2a32b3eaf. 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/QZ2J21505676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91f9c000ab829f31400987fcd90269764f75b5b925cfb6c8a779d63e112dab3. 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/COA7W1720008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63473b53daa32ccd39c24054a2c17700915508a009cc9c6462fac0ca5e82d062. 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/QZS7J2142784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5869b945f74a3c7ac549c44ec16a2d8dd35b5b6cba6cd28bdde588f9a80779dd. 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/QZQAY2149055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb80081cbfe0973c4f444fd55571f29be7177daba574b9c8e934e4228d0c75c1f. 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/QZQAY2159088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc86d9968301efeac265ed412ffe2305948f6d3c53694c5ad53d3f63f324d24. 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/QZQAY2145847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab19a88d6edbbc3c0eea763363cf352d1ae0ce722f0be33f63baf4f582a9ba3c. 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/QMGR32263443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc069b51291323d868ab6490a23b7a965cc7a8875b2403d0aeb283c8188f841df. 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/QMGR32114950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65427097a58fd1c8fdf19e2b2a39a48d4953e50a9eff9027d953977689093a1a. 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/QM4TW2082906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6224d9b00d62ceeec6eb0ba4ea3ff4e0a91380f97803c159e73db888f1a43a0. 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/QMGR32083833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587613cfadef38c92ecb0e25a772028bf5dce9f46dc54395a8ac6760bf18186d. 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/TCADR1881748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13939a0a9b064c7af5bd7cbe5a7655cf9996ac05c270b0fa2972cdb9e2193b22. 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/QM6MZ1922257.