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 0x8dc9dfb49655e067c53b3001d46939d879a5a10e67ed01d396c91c7945a37f97. 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/e3b4a059-2983-4220-a491-683ad42eeda8.json and https://artists.proofprofile.net/proofs/artist/e3b4a059-2983-4220-a491-683ad42eeda8.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 0x2640512e3fd3de00ff1b764f6b5cde42388cf734dda58f384296be6b98eec606. 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/QZWDD2364220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71b75e7a7a784438c4585fa2c2767eb4e4ff5c9b8f99196fd38f437a1008cff0. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:55:44Z), 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/CH7812368041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08913d2407b98c96921cc49dc74cae7e60f812ab4ca23c73179d2f0498188c13. 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/QZTV32325180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe430429ad6f05518dfe73db81c0d706072b9ff638b05a669f897ba2212f5bd85. 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/ROROT2304420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1fc6c5c96b51d0377d654867b322e24a90f3a4e0311d94e44b02b4d7b03dfad. 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/CAENV2329000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe9f5825e80674362e8b09881b9dfce200c87fadd7e5793535f8b3714dccdc9e. 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/QZTV32377518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3efee10ef6e12a1b482d025db9721ffe83aea3023cf6b96ffee232546b845c. 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/QZTRX2375682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0948f1d3057e1f3eefa198dfc06a0798d135760b42cc74dcdabfe321a83b209. 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/NL2QC2101201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d154e7ebf879d08ca4deb891ad0f0374991fedb2db7601cdd29ed1df41a6425. 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/QZTRX2354814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd6181d4fdb1d42baf2c7e56d38ed4b77e25dd8ccbd8a0041280b0bce7ef5ea. 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/ROROT2303830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd7efb405bca2569d32171c24c4e2324a7f66997c9e61858478875742106d76. 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/QZTRX2375693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585981221f461c0181e3486657a7c9c31674c4d0ad2d0c5343dceb849fd897d3. 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/QZTRX2341470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x647c0e93f03aae43cd6db30b7f31225a1466200fbe19c83942a81e4a858e4cb4. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/CH7812355457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea7601e326427a60130ce7080ff406e68f3a5ef2e62d0e244682d66beee9a3f. 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/QZTRX2320366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb63f82befee8c54fd138b62dd9f49200907b5dc0560706d1521501b373cdd1a. 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/ROROT2302770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b8794554a356e0cb449ab1816b780416cc5c62cca0b1b9eedec0b4c27ab162. 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/GBRKQ2313268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf4c7f1024f37728de36ff5635d93a20383ac0258e8c7af19963a823d8e5cc14. 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/USLZJ2325195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ed2fd6a3a3a7d90383945089b838f4a0f3364cae7a940d698ca65bd7b313e33. 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/QZWDE2234307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05603413c5b6ebadd431b05118a43f357379197545476c6f0ae0cd0568bbf8a7. 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/USLZJ2307090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8a837bda000289bf8ec759fac15ab7e191d4fc1370e872edba47e903923498. 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/USLZJ2325337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd5861352a885d0a1355c16a5f5880c46185b8b9e59605b2f0d3e39d9d6f2aa. 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/GX8LD2298725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb66869e6647163b3e9443375e6338784bd58ecbb8e6456a841746aac32901a6a. 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/DEXW62300028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373e7d2c530eed2a064784458fce65f092f8d52291b0a48d02f635e1a39e8afa. 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/DEXW62200214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063057c9d009d32f6bae22f48031b84811711eed088b88c9ade452a71ad486e1. 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/GX89G2251229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc208aa6f98fd83e9b88aa3477d7c29ba709d140e4e614d10b354ce92e521b7. 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/DEXW62200189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0cb4703464a4650c8993cde1f45eca982cace363571dbeeb5771fd98abf0cf. 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/DEXW62200172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea2e8ab80c4e7ecfcf8cf9585c435f4e12fd70eab882745b9e035c460dbdfaf. 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/GBWUL2263790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fc7f1669a969f8e0974d117d1bb40d15a25107a5b347d5ff2d4188c946e0611. 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/GBWUL2263286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a04df888c36c069ff1936f5e5ccc455ef4b71a6c866352de2ba6500bcb18cac. 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/DKD3Z2108797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f52ad578a254f5be524bcc4f80b2b7a09086abc07f0e84f064b9e804a8a3bc. 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/DKD3Z2108700.