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 0xb8ebb02f9e906ddee98b18d3f94775805f538841ddc92d1d29bf02ba3a1e4eb1. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/80fde7d6-1ebe-4514-9658-2d8580d68454.json and https://artists.proofprofile.net/proofs/artist/80fde7d6-1ebe-4514-9658-2d8580d68454.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 0xe4fed718057b5a0752759ede22b1dfd5d954f21ca38d8444d3fcd038a5e653bf. 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/NLSA52100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef3cf4e9a135b84dcf71a042b6f6d9e4f3fed842f94b5fa13db5808d8671d1b. 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/NLSA52100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74abea459d75834941e414d14cf75d89ec4177ee3d6cf373680418ceb8db0cc1. 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/NLSA51900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb4f69ab9ad1803066b16c4755920ac7b1bc0734bf19a914f2b7c423bba2a13. 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/NLSA51900014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8c74c4b96213d94e132eb275061868e2671840424090e0ea88cc335d930d036. 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/NLSA51900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e2996d6ab5f009c85dda6d41303022beba69a137ff6bf79714cd3c590cdf3e0. 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/NLC241500171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2848f5a572612bee9395d9fb59e4b8ea3425625acbd250bc584d103cdfe8eeef. 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/NLC241500173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7369047a17f62b7dbc9b998c4fbbef6834251c62a2397e8b6ff9cd200f902dae. 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/NLC241500178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x198441bc4237a860a76c5307435805d01a052d48cd6a6e69e734fcd2d620def8. 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/NLC241500181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38342d814e26174a944cd132abe5b1b0dbcb3ff90e7eeab7a729eed0924d2af7. 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/NLSA51300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff40eb8461e841cc91bab6c8dc88f4d8961db0b274ce7095765e92f598a03e25. 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/NLSA51300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7fc60d8695c655dbb30bfeb0082e8b8b2807622cf52c7ca447fdc14714078d3. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/NLSA51300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4431a06ae945e6b3a26066fefdbf2e1e1c8f5585fcd3447ecc403d1bdf33853. 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/NLC241400194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88977e890d57ad256cd3cdbb207f8f8224f5d9082c3a4b057656829c174888b1. 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/NLSB72300093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecba2782d2daf1b1e6fc89baa2166f1cfd8ab97a5be200f767b8e9d9a10940cc. 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/BEK012200064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3fbad6caab6651347f45227205200a434702c8c3cfa7598694edb150d531109. 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/NLW042000054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609ed58332ccea9b39af30db47b8a2d768295f9d7caee7db6e1c0916417863a8. 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/NLC241700046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494d9b2e5510cdbf9990c1213a7ca7a3e450aa45aacbbff8c5c9e672a103679e. 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/BED181700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425449b1768b4321f359df965916389ec77ac0a2b804ae94a12df855a6354c26. 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/BEK012400390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c825128507c73a44968387c9ecc8a2e7b72ae05fbfe3d6d937ed4ba1afb627. 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/BEK012400407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbd2b515a6b71050566d3f308b32c163d04eb85537279d7b1b7e4e11ee21bc89. 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/BEK012400430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f40d227c4cd67861a23c0eb913882840d2cd2b56830a14784bd4f7e2085aa6b. 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/BEK012400410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55823b53132fef235c2e4d06e3cb5238100a4800ecb562568be4aa8edd9d5e2. 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/BEK012400404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba1039529b7ee52dddde9d28af626b9a719c56ef9b60815ae84cd88d03528a71. 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/BEK012400403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd93ab5e01159372a8e5995dbafa530fb8168dc604632cf07fb5e858dff5b8d8. 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/BEK012400357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61f3f0a8a2ee7208d05640ea934d46f2ba9c3b8039a493c0f13ee4d44706059. 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/BEK012400409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d1185cf61b249dc51b68533a59b14684b28594e5e11bb5d0fe09c383167cfc. 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/BEK012400402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c0dcbd22f35771844bfb6f1e676019cdde7acfad0b042dfd5d60bf0dcf6c73. 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/BEK012400406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425449b1768b4321f359df965916389ec77ac0a2b804ae94a12df855a6354c26. 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/BEK012400390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb41b11847069858d60a268507c858b5e2b9144aae74592563c63652ad66d018b. 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/BEK012400413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf74352d91df8fc4df9d13d1ae94b572fd0045f4fc6fc72d2adae784775bb80f. 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/BEK012400408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d89eebbd394a413568933cc0a175399369cd3debdd3586e3314e4cd0cc1f1d8. 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/BEK012400397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fcc1dac5bde84d9e845d4ecc235e45992a92a5c3b5cd9ba19ea99befd738f97. 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/BEK012400431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6780ac2a4d8e9472de6e26e532f3b36030cc8ac47df5e080cb2e288be803498c. 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/BEK012400412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b8ac4e645845f335a3ba0be2d0613e5297413c645c2a9a8a4377af27293f46. 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/NLB601700199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db7718f02b3a3fcff75bd611a57ffe79b14118db4fdf6b931abd16a80ac47c7. 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/NLB601700204.