1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x135a8dcbcdce3d385658f68fda32924b29fd2f0ee59676a589718df9e5a27b78. Chain 2 (Bitcoin): anchored in block 953758 (2026-06-15T07:48:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b4a51797-66d6-4ba0-a594-51a1a8f42c54.json and https://artists.proofprofile.net/proofs/artist/b4a51797-66d6-4ba0-a594-51a1a8f42c54.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 → block OTSBitcoinBlock must exist at that height 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 0x64343644f79ea9e9275625f49e46f6dc2d8e2ab1ae021d4011379c78a175d248. 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/INA431103791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a1ea2fbb24447679855b89ae34cfeca566bd4f949d5d9cb3aad4b56313b8633. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/INA431103794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea96015edc637b8f02b898ea9b660b6d0a7a994da10a8523a0e1a3dc0ef4772. 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/INA431103549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79177832c861ebb221129603e73959ffe0456123af74c8ed6c0d322c4c1bb78. 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/INJ171505205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957e8a2705fc683313c6ad59c197cd1e3e1b1fb764df183d8cda8b075a39c9b4. 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/INJ171505208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1f45bb456f6ccae3c7329fb88c6282ca6632798201de19e6383589addbd6a1. 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/INJ171505207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd86eac74a88cebf9364fa1f076273361b6ba8110825ee604558d1f5cd907cada. 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/INS971200490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1631b967edcce7b7581c49f79b8c71bb784d8d4389078c3211c78b9e8de2d898. 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/INS971200061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278d06e3f66f80be60a6f736157434438aab1c35b219a68acf9de27b76842189. 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/INS971200063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af23b0dc502d0311a8bfdc4ba696e07d6abd327a44ae00456c7fa4624e8bb11. 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/INS971200062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabcf61d6e7124256f715b15fc75a22025561a7bdd3e6c2354ff1b84414a50cb4. 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/INS971200064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb800db89e57ea01fc67205302bb1c7accf943740b9e7f1e20f6501f45ab6ba8. 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/INS971200065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e0ac00a278abde7baa803541147cdbf4b7ecd9fd57f8bd40ac2163715ff282. 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/INS971200058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfecb87c8a912871f393f00a23a4cbfb9717814f6f38a079019293183ab927668. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/INS971200059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aed8395432c1acddebaffbbb63a6b8d86dbcaf6519b7cec05b6f04058104eb2. 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/INS971200057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e97c2ea8f3660e4ccd200775759d0703b9e9bfc9317035a6915e9cc4e192070. 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/INS971200052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a0911849251e889557c945a329bf442a14aad942b7494aec936c7580310bdcb. 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/INS971200056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce6edc6434783299a4ec24a59e4a2fd0fec1de458abc8426c2f47b362902cc36. 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/INS971200055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71df3c59523553c7bb25b8159231f68e3c4ba5a6ebb1b99c8a95692650bfd679. 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/INS971200050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6088255de22457dcdf83dcf38039cd96dc45c382b6c4df04aa94f403f6398d. 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/INS971200054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb12485340fada0acb5d3175e208893cc16c7a1c7d5e9a4dc89bdd9fba409c594. 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/INS971200048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc723a2ce86e108266cb1ee446b4267518ed3f7bd6e600bb672649a0185c88e72. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/INS971200049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112657c42ba8df66877ad9320b3ee1eeb9c7586d742380c2ee3f41678e1fafc5. 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/INS971201243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf439653163eb86d796f0e92e28768b03f581dd7becd810b557e5b08d8001d17c. 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/INS971201245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5ecb82e939b89129a1aff2fe427856b379ea17b3f0288ce9d81f2a26ac502d. 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/INS971201247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb890032337eb2deeb3110bde884b82abb1e32d1b0cfc3814f169b7212a939a34. 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/INS971200079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5bed744ae1c7285a1d7e7ac81ca06060816d43ff831623c8dd5f26436ff5ab. 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/INS971200077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f561c353c96baa0c8d628daf99f89c779bc03e5e3b79e9470c302cf98c4b9cc. 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/INS971200076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72ef3ca46f9178b54dedaec5fe8161b456f4a54d4e59ed624e9513821c61b52. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/INS971200081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb050f4cf4454e7c8d34876f66a58d3c9373af70a7763cdbcbb704fb2a14bbacb. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/INS971200080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7007207fe8844f6490b7227ee49f349d609540d783db19f5bf63e999e43254eb. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/INS971200083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4dce21ec93b6ab011dadbbf7f5fab0380b254f51d61a53a915c73a4c17a872. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/INS971200082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79828eb638dd61e11594aa9571076776dcac594d6b920a132a241d2d3ddd2c4. 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/INS971200068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f86be6727ef1d083efccfdfcc2e81a92cd3bb85a31ed82dd49ec3a66afbea2f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/INS971200067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403817b819031f6b1960118bffe25b923c8e5014345e9a23c98fbfe78a63989a. 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/INS971200086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd04ee31a64f4debab1e6eba321172f16935d02f7d44a4d01931127765b21316. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/INS971200089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec12b44061b33855217beb668b2f4e7b547152f7d2b1887770b55040ae1c000a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/INS330201129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x981eda68ad1ee25655471252c179c550f8119ef3eac03394a674278f299d1a5a. 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/INS330201135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6cffc2606364cafad7b868a46f8abe9e001319c554fbf270b4ba81cec811f55. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/INS330201128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab8d41bfcc5674c8caedcecbbf48d1761937734f248d48acf3c51ba223f531e. 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/INS330201130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc1f9fd382a03c2eb5a6af0d3accd784f3e8b834e5c30f44b179e6f8e1e5980f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/IND292100573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca84a12717bc200fed251fa1d10c85e2323579aeaadd54d81731f688095f731. 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/IND292100579.