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 0x9e2a71b3d81e427a1c9b1ebf033db489131e0f441b3b5639179d8a1e2a9443ff. Chain 2 (Bitcoin): anchored in block 953867 (2026-06-16T01:09:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/05405dfb-858a-4a78-bb2e-2ddc4112ffed.json and https://artists.proofprofile.net/proofs/artist/05405dfb-858a-4a78-bb2e-2ddc4112ffed.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 0xac256d49b28db6e821cd01e5717885f3480e84fc2769b355499e135c24fa6952. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/GBMA22525328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea290ca03643473d28fd6cc85a53aa4876155142109d9c2541ee95ce489629d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBMA22547968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d862ad804f0c25aa38e07eebeebba490d46bc203a03cf9c7817d0f810d9f12f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GBMA22559878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a904e4c99105f6ece74178d9240bcaf223f63a882abe289e4f42188a36a77df. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:48:35Z), 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/GBMA22559879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0589d6b97b42b21c87d350a338d133c3aedc2ca97c9c39306779a3ed2aa02499. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBMA22559880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa24f94a623c6c087641f606c21a0ca982c1e9ac81699359991d643a238b34c85. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/GBMA22559881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd514b984152dd2444eee58ea77bf3ca41c85247c6767ca7290270c6d9197a4d6. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GBMA22559882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c429f1dd80ae982c1f744e39e9bf1eaeb54725da895693c529ce2ee2eb1f9d5. Chain 2 (Bitcoin): anchored in block 957778 (2026-07-13T00:08:48Z), 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/GBMA22559883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x758167226a2bdea4f57e2d744e777e34e57679456604a052aa3badcb6359cac9. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBMA22559884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9616f0e286c04e632a28080b32250f8c8fc110c80d71031a51893a56564db875. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/GBMA22559885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dee91027916fb3215205a838cba369139eeaa587be14449d0b5d24ecf60d379. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:02:59Z), 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/GBMA22559886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46782cb444865663d7adceec6883b0ed8cc2ff7a8565ddac65b7433e00dd77f9. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/GBMA22559887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x922cbbfebc758edd3e0e4a627394400c80bd11172e9b97c380e23a82a72d92fc. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GBMA22576197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2feefae6198290fcb7d723a66a90bca06651ef1ef27c0b14d96e534f8795b29. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:35:29Z), 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/GBMA22576198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bba3055a76d955f270285afa4b150c57abe9dbdb53bc021b911b6bd4106eb86. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:48:43Z), 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/GBMA22576199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a950c709145d73108442c9c64178472577c95ea6cd1e4fbdb9a8cf8529cb1e. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GBMA22576201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2adc67435ef6448868f90c79613dc7a5335db6a90ffd868702cf44a14a0c1bbc. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/GBMA22576202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9845e8910dbcfea331802f06518e921b2053b911218f1faab716a3bf5c94b940. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GBMA22576203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a5c0c7993917753345870f1b1dafa97226b55846b5f1efca4fb8132a19d7ff. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GBMA22576204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x552c6bc67b9adaa8df9220d589b280d787ec79ec090f671ce3a0c4b081114a24. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GBMA22576205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca3d0b2e8a6e79a7177f7d59604553a81be00e575752692ba3f93ca1e8e16ca9. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:51:11Z), 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/GBMA22596000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf4d4b14efb8c6e47b049fe8973e4209a4c10e56f29be19803e93ccb38f697f0. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/GBMA22596001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d79668054dc45b023a3750d9f220e7e491dc5e046ed0a83f91589564ee57a9b. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/GBMA22596002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x863dab4270a2c6b9e26eb5b322819297b08663f085992303e04de3d4593d6a85. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/GBMA22596004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39783dc0ee8b4e13164fd6b5e4526d6d0d01f1ab1b29db569e78029a209b8054. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:34:03Z), 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/GBMA22596005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2f8a67122b5002bafe2d7c27ca664d5d441b4f7d9e7194e7549393df0a107f. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GBMA22596006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cab9d2d624be6aad5aaeb3f239d5b6dc08618754091eace025f6ff6b277f7ed. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GBMA22596007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cdc6f507be9ca960ea696418df1b7273dc4aeec8c05ab0866c2357c9040e216. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:28:23Z), 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/GBMA22596008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab6d6e57d5aba45c8948894cc0e8de8d2136fd5e5a3604ba5cce248f069815c3. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GBMA22596009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38d1acb7efbe5b39eb7342686aa9a0307addf11f33c5c9e8ae451aa6044b75a. 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/GX53U2527558.