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 0x9c9aa9c1dc5b028703bdc8c36495df4a8d161687bac32e034c3c1f166b1339e6. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/57cdcd77-78fe-4e2a-8aa6-d2b7c917fbc7.json and https://artists.proofprofile.net/proofs/artist/57cdcd77-78fe-4e2a-8aa6-d2b7c917fbc7.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 0xdc1c1bcd71b684f64291adf46a014ac18eb164a794e12204222ae803b2b6e95b. 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/QZ22B3003415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7354374bea8ed67ca79c34955e88af80a267e0ce4b4e9ebe78f48acd537465. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:15:55Z), 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/QZ22B3003377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78fc71033f21af07ccc06fe6be3dce76d15f442eb4ee324fa3ec6cfd97698343. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/QZ22B3003379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f23835d55015098e5e0bd0492f3841805cd09650622e9d3aad25bed527a861. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZ22B3003386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f23835d55015098e5e0bd0492f3841805cd09650622e9d3aad25bed527a861. 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/QZ22B3003386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac36995c4359e8270512651f22323d5a3348e12a331b288b9469b5f765ca896. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/COF019700247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35692dbeb8d7235f2d23e18c491d72340bd283f3547762244783388a81981fd. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/COF019700250.
Historia Musical de Luis Mateus y la Nueva Generación
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c15622fc4b4cd4f564a7e45e361ddbcc20966a84c300bdac361ce6cb8465e23. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/COF019804338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4909bc2e617eb0f59e47b2ac27ffd9fd1c314ca9c2f00cbe72614524f0092260. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/COF019804339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a186d28121ef7ca2ec7edc0fe90ecd4b171fb4e0f37d9e50de88fbca7a3f81f. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/COF019900820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ba5b99d2a35af0ba8693680279fdf5db208069eb42b7ba3d5ee06a39012527. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/COF010001491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f083b2117d958f2df7f73900e2234fe95452c371f3d69d25dc3e4c24bba534b. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/COF010008583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bcf07b8c7335d18e4fa9d84eb465644ac335488d3aaa26c1feaf76835e46672. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/COF010008585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3112d1b5fabd811d818dbef13d22380251f65a11160cbf1870d761602bd5186. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/COF019900825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d4ce73d3ea543ae05c7b9aa4d4118f319347b3d33ebc5937393689fbe48621. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/COF019900822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc4fe1e1dda8b739b390403449118febf7583419e50b45ee943b489b696840b. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/COF019700246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaeb514062ee19f2f2eb33114ffbf84659e72d3a62e3e17f8a37d84559969946. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/COF019804337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e2ef03c943dc59c5d7b1bdf5b75d2c20fec31fef55c0f5c39277bff4a669a3a. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:07:54Z), 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/COF010008594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a67f48774d2bd7859ea372d0fd2fd96cfb5f0afb126aaf8b332bc1c9b06d1c. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/COF010001482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ba5b99d2a35af0ba8693680279fdf5db208069eb42b7ba3d5ee06a39012527. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/COF010001491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed8bc270304ee71f2efbe470ed89a1538d4c8ba425347c432dbc2650655ecdc. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T03:59:43Z), 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/COF010008584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3112d1b5fabd811d818dbef13d22380251f65a11160cbf1870d761602bd5186. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/COF019900825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdeb84ae0697707f560078166cbe7ec2410e0302e3e313ae36098c2f15bfb9ac. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZ22B3003408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdeb84ae0697707f560078166cbe7ec2410e0302e3e313ae36098c2f15bfb9ac. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZ22B3003408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e077c59e99ef5abac323bef78ab835f1ba85b92e97adeb7ffa98b20c53fec5. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/COF019804335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c1ea2886db734228d8d567f74e78a27d7e319afab46d42bc8b1b6762f82a6c. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:32:27Z), 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/COF019804336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff28c3372e45dbb4f87fcf0f3f583e687aa1e36235cee78aa1e7283c0f7a7f4. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/COF019900817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07f4419059e99d37abbf781a89ccf2ff5ef747b8ac1986fdfc7282083f534af. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/COF019900819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de5cdf357a40f380245f05dc9f8abc1977d4afcdca795b3b4f5e8cfedffd83b. Chain 2 (Bitcoin): anchored in block 957778 (2026-07-13T00:08:48Z), 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/QZ22B3003413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1c1bcd71b684f64291adf46a014ac18eb164a794e12204222ae803b2b6e95b. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZ22B3003415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381924004791616d2098e34eea28aad64fc7fa91678a4c6b1c96e5a9d32dd31c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZWDW2382201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381924004791616d2098e34eea28aad64fc7fa91678a4c6b1c96e5a9d32dd31c. 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/QZWDW2382201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45cb8d08bb8a7b6d33d5b66c47539ce0526f0d8fa91550c6f0631cc637a665bd. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZYFZ2488591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcea675d6396e49ba3dae0b1227f3bbd5e0d63fe604d753f8ab137d7e9a8a049. 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/COF019700249.