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 0x04d7085f45dc8f586bb8d1b145746d3ad23f42ccc52661ecb769529b7aaff839. 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/120c9936-86ff-4cb7-8242-aaae2cc014a8.json and https://artists.proofprofile.net/proofs/artist/120c9936-86ff-4cb7-8242-aaae2cc014a8.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 0x133816916ed81ec6ccc4912457b702efd985f02b872643f9d0e5c2949f61a48f. 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/CA5KR2454856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b33266ec07f459646c94a49511859e6345eed35a21999e5c8e8cf46edaf4b5c. 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/QM6MZ2430593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba41c8f1faa79507d6d5b36aacf78004a2fc0909f7eed35b2dc80ba311099b7. 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/CA5KR2440367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76851fb57568d31075e9241e41a6529bb6ab8f5cd0046b754612369601c3c367. 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/CA5KR2388830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4aa5aa92c836e1fa289b1dba20dbe42bdd338d6b3882a24887debf5d2dcf74. 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/CA5KR2415560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a309f2013879ac567ce9ad02e8bdf29475af70b86be5c1bd0b49aa64353863d. 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/CA5KR2415561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76851fb57568d31075e9241e41a6529bb6ab8f5cd0046b754612369601c3c367. 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/CA5KR2388830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea698f4e8c1ee3e152a275173c3f99cd7d95187769062ba4e52c7188a561e21d. 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/QZTRX2319849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50bf06a0110dc9c168b685fbbe5fae991e57915caa96fc92574be0f38314dc50. 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/CA5KR2325362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db6ec556da7a0400df23f7212ee4893f67086a0745841e56993f57677b29b3d. 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/CA5KR2297744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51aa8926cfc21c7a91e12c5c114713a1e77d8dda9e0199846746b91d2485d43. 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/CA5KR2295349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x897433026b7d7dc53a0943e9556b90b8d6d3cbe7fafddf3b7270b6bbf8f5a8f1. 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/GB7YL2100069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf54ea4b6f21052c181cb0ed26c6067a84953312c17d36bd9282888eba69309ef. 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/GB7YL2100070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93dde47f309d3098ef0c5d98f03990c5a5b8930b6b6483edd578ea537da6dede. 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/CA5KR2134204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d706901bbc0f581e4f073b6d0123f0465b5438116a83c527521c305aad97cb. 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/QZHCR2000040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234daeddb1897dbe9dab7e61054d488804d74ec54292cb1b3c65580adec4241c. 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/GB7YL2000105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c79dd7023f4007300529df5634782ca13223d380c1b8159920a98180bf83a14. 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/GB7YL2000107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51aa8926cfc21c7a91e12c5c114713a1e77d8dda9e0199846746b91d2485d43. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CA5KR2295349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6d42afcce6169a19ad2f75421ad6874d03c952deb69752c6b1fd069bec0644. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:27:51Z), 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/GB7YL2000106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x114046bed7595d0373a5fc44add3097ccca4ebe511690ffb79f111615f9d748b. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/GBWUL2085847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a3f483e61caba77d04091d6457bd986b060236f9269bda9bc7f9927181291d. 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/QZDA82021441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa938abac720fcf4c5c2221fde4ce75a07fdf5ca0e09b5dfd5fd0d32dab9fcc2d. 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/GBWUL2047731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa423a813d87f89c09f8c6e7d9cd34e39bf6ee32248ffdffd77cc0903a7f5bd24. 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/GB7YL2099701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d338b0f4b526ac150dfe286c1bb69723a944f0d6e2c87f738b58292265cc119. 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/GB7YL2099702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843df532f26d304fc4a55099b35a7468f58ba63bae0cb6361b3fc89c159ff0ea. 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/GBWUL1908162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4c5fc7ae86f046045195a64dcbb19166dd6ee1c56c8b6f2625396214816960. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/QZ5FN1997404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5b950fbf7c1aaaf4650f39613f8e0081fd8cfc652aec2f6e4a23d84b318e0b. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/QZES51910100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cfbb514235dd0ce864134cc923abc6533cf25eac01651ece544b38bb121525b. 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/USLZJ1865866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b43a2961d1b6843934aedf8b6bee72de9cd0277095fa5a5e6bc3b3d1b520fda. 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/QZ3MN1760043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d706901bbc0f581e4f073b6d0123f0465b5438116a83c527521c305aad97cb. 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/QZHCR2000040.