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 0xb3e8ce7f4bee03298f0c03a47e71f3e53044c0ad1fe98649b0f4a0837c893f17. 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/38063d4f-29c9-4eca-8e3a-9c22fa4612c5.json and https://artists.proofprofile.net/proofs/artist/38063d4f-29c9-4eca-8e3a-9c22fa4612c5.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 0x235696eb457c9e636e654d8490020d0914afb988c44c8c7795ad25d6ed97d1a2. 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/BAA052122402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1cf1a5058ad11322e760682fb534bc14a2400d022648cf72ba8887eddf9b66d. 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/BAA052122403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0175e3ed87edcac4abaaa399a891e9c9f56c3725b76383a588a9a8b868571091. 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/BAA052122404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a49b98081a0b3dcde29f57ccea0d0060dba1b08b34cd75ad146a9aa8a40f392. 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/BAA052122405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a565144285477593ede2ae4e19dafb322fe07875b9e133ece92fb4a9f7d684e. 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/BAA052122406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb93ae308426e38fb92e3e79f75f43bc8692f8c0bc00524fb7f222ca782083d9. 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/BAA052122407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140fe3710a16dd9efcf0bba17d67431873016505a9c133c1f90d08a8e58812bf. 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/BAA052122408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332dc16e05f8b7ebfe7acbdcff26733aaae5605920b7e076afafad6fcca4fd80. 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/BAA052122409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa9047f832987accd8ed3a019a233c0399d61e1a7b11dbb822c6f935fcc543aa. 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/BAA052122410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc0631464752a757860c29194dece6c8f5228a9a875e6097a0b0d43ea30b796. 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/BAA052122411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5be89faf338f6f53468f353cedf5d3d499a6849491261b4846e45943c0a7b6d0. 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/BAA052122412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbffd4cac85f7aa6528d8ae806b4f89852939778f7c5dca6810bfd43a8a6f18a3. 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/BAA052122413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0f384abb369f4a29a1d8b39e81cdd507f3d99072f4358f861769c969cfdc30. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/BAA052122414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd50df4f2cda3a8ac2be726b1081aa8680ecb3882b59fe83f84599013e990e1. 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/BAA052122415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a16beb112e12c786ddc3448a15b96d5f51be514f27d7a6018a86bc8596bb8c. 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/BAA052122416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd86b1ccab5c81b0fd643b31d9c49dee3cb48b107ef5e2bb87311a4cf89591627. 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/BAA052122417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd795cca1322436b059a50cbcf1b1fcbd82f93f403bfc1ce087f22bff8762077. 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/BAA052122418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cdc59244775bf42f5761b6b151516ec4e77e1caa4ffc6af37bad45f5763f5cf. 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/BAA052122419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9fa0f9377d25883e76b1386ad651f4d86305b6c194b2bc9e36de18b68b290c9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BAA052122420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52bc0990e05073f1b43f1e14ec833d82e96772bbb5ef8283ff46d197447fb75e. 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/NOAPI1890682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccca28692ded5818179ff58306d894105779cade32b2c1db6e03553366dd1f9f. 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/NOAPI1890683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9aa0af309ac9873d3dc9a562e20af707f9a6ac13016f6b8410bc4615da87eca. 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/NOAPI1890684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe072c04c28b81b9da9287e8db8cc254841a3d8b1bed6466b5a88961f34444a59. 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/NOAPI1890685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299432e14385df20fa585a7866c25249dde12314b4716c6cffbf51acc6786abe. 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/NOAPI1890686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeffcc45072e63f0e8803c35234a2a0d219cfdd87b7ffafdda2cc66ef2b181e33. 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/NOAPI1890687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b887a3d8bcf17befa6d3914e14e0f4e95bfff89eb4ec4327a4a792ee1d0dc13. 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/NOAPI1890688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc7c7f7068de9e28aa7e1eb4ccb9c35b738dd64ef15cde2daf35f4b7a340876. 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/NOAPI1890689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33bc885183a2b777137b95a2eb15d7675197deb65a7bff249dc9ef45311e7115. 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/NOAPI1890690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6978d863b84527786cb746241f6b6af773bc7ee6b4fc803f1242432c52671934. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NOAPI1890691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb075874614d2da331b4f62c1b1ea22980eb8c10e0543b1b231cb93c09204afa9. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NOAPI1890692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5aed119d2386db3c073c093d0b0e59867b30418537fefe97dd7a8e8ccba0c86. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NOAPI1890693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b248a6324fec4b152238518d6528d70e2390fbc75ee07c4550bcf1bf8363660. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NOAPI1890694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8299754a117d32592008d06cb9ab720c2465e522d7807fdd309256802ed732bc. 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/NOAPI1890695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0439a5c8b25006d3668461e17d563ca018680366268affbc66cafab8e7a8392. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NOAPI1890696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa1c6fa2149ae887c77dea79f45420fc8d51258fd862af53e34470191db7da5. 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/NOAPI1890697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a00cb2a6e1734e0a5b114958c9b815a1ad60068cbf07ed6d8e46dba3a61e1e3. 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/NOAPI1890698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de404094b1c94e11908c26fe7ad5ad73d1dd435079b21557ffee510b8a1e598. 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/NOAPI1890699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd11beaf9e3120e7d39e53045c12f371f1d8e9a6e45698081ca18bc300add4b. 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/NOAPI1890700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6275d2c385b7d0a44690fa08aad8f673197ebdc7072518c292600c3e7fb62a57. 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/BAA052122089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16e8500b4bde4bf28d9f81f53d6f0dbded00f504af356317e4e4ad55df57e96. 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/BAA052122106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6358b42788c4a9f413f2cfe6a8064ce1b8d06852b876113581806f51b0ec0ea7. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:22:51Z), 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/BAA052549349.