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 0xe4fe9623478d64ec94809e23cdf690a6c48c3729327620815798c4bbef4006fd. 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/2133a3a0-cd00-4246-b5ea-70ee441fd5a1.json and https://artists.proofprofile.net/proofs/artist/2133a3a0-cd00-4246-b5ea-70ee441fd5a1.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 0xa16cb95824def0eead0ba2e8c1e1d4889527bc3978b3e8f2ab07d6140bf43941. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QM24S2100627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0fe4ace2193ab4ca48bc4334a687d727fe422ae9721c0e109367e397a37021. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QM24S2102247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34be970f291b0fbff4c0e8b4c885d251d3f0428870d42839ae448cfba7392fe7. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QM24S2106339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e209520046811aff1a0013549652915f29f02f11bf63ec3d86e94b81b3627f1. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QM24S2107117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb667f380dabff97814b16dc933671c7c0eda4d4b04be69a625f955bb9f743498. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/QM24S2107494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29bedee8d143f1bd4e679302fe1526b88191b0632ecc4c3691eb088eec42520f. 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/QM24S2200291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb1f29e1e6a92faf132282ade73707ebe0a007d2f1f30d23ddf5114caf048ae. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QM24S2201116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ed7a47a750904c72d938e3edd7eb8c5a7594062f757909a940a71a48d6b5ed. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/QM24S2303788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16107c97344c049988d7e44e2ffa834e8600cc57e1cdfad1ac3391ef56eb3193. 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/QM24S2308204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6bb4dfba4f366115b343e9d0d2ae99ee2f3031b42efbbc275261676d133e10d. 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/QM24S2401028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ddc34ae7807351f9329e9133f394da1c584979d94f640878771c574031bd53. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QM24S2401085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b95d447cc1dd03b65da2789c0f3f1c8bbf629270fe24b6029ba7034a692f2bf. 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/QM24S2303793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14025ca6f608bdaee9665e448ef3d662e7e88dfe61080f63cd0b23cb57c9137a. 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/QM24S2302471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x488bb19397aceb7b71bd46ccac8e453341e6ff00f5c1c1abdf0d879a7b47e9ec. 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/QM24S2303218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f8e258486556ab97f02928e1c57d3c045447dd6452cf5feb671724f54e715e. 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/QM24S2303792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabd258331c28a30af5d79ee5b7f54e544970fd4e7bed07c178ebbd7c7cbe9df4. 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/QM24S2303791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82874550e9521e7075260e2b8ae39e30cb00893c19029326167714b290aca5fd. 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/QM24S2303301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30fe777f72b82b14b843148f13dac14b697ce4dd91d53b7331417638e435e693. 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/QM24S2303790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda4658663ff9b243fdb405377efb579410147f9c4fbad7630ae86985e664a06. 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/QM24S2303789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ed7a47a750904c72d938e3edd7eb8c5a7594062f757909a940a71a48d6b5ed. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QM24S2303788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3bff2f1619f4db54d3a546c3be245f79b016979f565736b2c5678f60f4c141. 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/QM24S2303787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x231b232f6cdebd459eb58d768266501d00dedc4fe3e15ac10f6e6c7cf48683b5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM24S2400206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6bb4dfba4f366115b343e9d0d2ae99ee2f3031b42efbbc275261676d133e10d. 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/QM24S2401028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ddc34ae7807351f9329e9133f394da1c584979d94f640878771c574031bd53. 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/QM24S2401085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16107c97344c049988d7e44e2ffa834e8600cc57e1cdfad1ac3391ef56eb3193. 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/QM24S2308204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90bb899d8ec0b48945ba7293054ebeee88c44dc7914670e8526ae3c336a953e. 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/QM24S2401427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e64a0d388bdcfdec8132bcef08fe9f7ed3f2fdf6abd41bb9cf4311342b68f8a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM24S2106623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd739ddf723a5d5987746679484a356f2e19e7d757d0f91a8c5d42d97a7f034f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM6N22577777.