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 0x0331ca5493019010c3ac06b1f991c487fe8be4234c763de10c73a227c60ea8ab. 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/9645832d-7867-42bc-a369-92fdadf319f4.json and https://artists.proofprofile.net/proofs/artist/9645832d-7867-42bc-a369-92fdadf319f4.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 0x9f52da5fe3d4b2055529cff233c0787abbc888be17be1b7228a437d16c5deee7. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZES72490739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c50fc09e68ab40a6b8ccc89a26977d8d4431b1f24cdcf9c0843ce005f9cbb2a. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZES72490734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad5d0b212a27cf892165cf7cc6cd2a8ec7c56abd90615711275e6dcc427c1e0. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:32:26Z), 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/QZES82481806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49de8cb6e985699b296c6002f10ef5739d82c22f4c82a7d9bbbce742e14d120e. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZES82477552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2169d3a1235bd798b23712d4020371057216e052fadb3d56dbb828b6a172f1. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:12:37Z), 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/QZES82481985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b2894414b9829e1fce880e19f21977bebd95c277d1d5523dc76c6c02cf6b1b. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:56:29Z), 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/QZES82481764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03955b840d549e64cdfe310f5f520f0a18fcc9add1e216a3c78f2e7d6b951e5. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:22:01Z), 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/QZES82481834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d995e034c3fc64cd9e84f482491801cbeacf32ece196fad4aeb03dde23f57c. 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/QZES82481899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40cae08faf20a242a28337be0b1a38c0a8661e7c6e2d5ebf038ef705dfa8359. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:04:52Z), 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/QZES82481940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d1627b7e14eb66ded66163e7cc87f978771aca9c6279076fd7ca46694617a36. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:56:04Z), 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/QZES82481884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca78234fb9972e41557b94274fa7e4899f13bcd1eced14fb1250bf70dd704ce. 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/QZES82481879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a5396a0a06c9689421d25c1227aa74631dce5690f738d5b1a6b05597d9273a. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZES92410937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb0593b4ae6354fcf55bf16b4bf479d044f46bab404907979333bcc6b1245f6. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZES92413548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0665ce1dd7a01cada7388d9f5dfa588307b2388ac3bf03e1b7f11031be1908e4. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZES92416673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91f69a77471de922dcc4527efe42015482a1e87ace4f3bbdf3d1390d91e675d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZHN32442876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4274920fa35797e9281548fdf993ce2f1cebb1be92797c0185f781ac8d9d9c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZHN32442200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe211673bdeacc1a3a8b2c8c11c45dd9cd67d903fddebba057d3300476ce7364e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZHN32443616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322768ed2c9c43c4a29eea40ed9ff2fd16421e3448a0275f54192090e73a8014. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZHN32443812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b02b59df9ebc3cf38c9dcd286fbbd310d91fb1791c81c5488e0e87cdffc69a0. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZHN32442479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee724d3cd0b051f1586e7b480737a310f89f1588411548ad264b7c7eb3368db0. 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/QZHN32443851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c2467c799a628960f669e40fe286cf99d6b50b898dec3327930949dd279acc. 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/QZHN32460313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e41d432a9c1c371de5c007130e893e51d31d8b355bef3b07153f9bb8bb7c0b. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZHN32443739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe5530e9ba8008cb11f44bf932081429011e958569cdd22d3f408a173690d518. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZHN42421754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x757be536743695076c1ab262db9ef385cc9c9361d135ff8e6e94225d284b294e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZHN52419957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908c57b91e697f6e9d3b3d87b1ba04747fc5d31afa157b6c5d05f5a93082f736. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZHN52419147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf783ee701de88ef98cf3796804018ec140797187dba87479ebc5600cc7261d6. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZHN52420493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a75096d0136cdb4f772e3fbe83a88c207fb2a6506e3c7eefede2136eb8fa94. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:50:01Z), 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/QZHN52419296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fafde06fc87a69e9ee8bff419e8e2e646569f907ec01605031c9f73a3604ea6. 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/QZHN52419023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ece9b071321953b184feb58b27f05800750fc1883baf118a05325e2c211aab. 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/QZHN52419071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd634c7ff8515e7d7b1e95fd4c96752354f9477e951aa6e5285b18726e8b36656. 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/QZHN52419420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2440cd1b8aaae59777c5468afdfea8902631539fe717bd65b77df3b3c0e7287. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZHN52419120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5063d0d08218948e3548d59e899dc2f6eed2cdffdd37d0955dd81a77a963c5f. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:28:16Z), 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/QZHN52415302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x491af5261608e5fbed1296391408d7d618f980658aed03c27bec5046f794520c. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:43:31Z), 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/QT3EX2508087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d225dc6ed9ca8fc290fce33bfde27cbf5c30bf0cf53bf56f56425ba54376c6. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QT3EX2511347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac8337d43aadbedbb5145a05bde421f1dc7d34da695fd03773fd1fb9ad12e32. 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/QT3EX2511379.