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 0x51227ed5711cdc5bbcd4ea57fb52107dc5b8e7fef50b41bc3283f5fb02a01896. 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/4dfcef32-c0dc-492f-99d8-8feb6b287469.json and https://artists.proofprofile.net/proofs/artist/4dfcef32-c0dc-492f-99d8-8feb6b287469.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 0xa7e89bc4dfa037fb82dc13b9e666fc877ea5c6ae45e027ebd55f07a5680e7a05. 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/NOX9X3546903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646c8f3cb840ecf49212af342fefd4136ce39d39cc03cf6a93a07c8ce7226f9a. 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/NOX9X3546907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2501c86e7b78eb6548bc2a4be7aa83399bcbc50120913e4f820801cb64a493e9. 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/NOGHH2353010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67acdae4dc03fe8233c1fa1593652db2e74c0e2491f05181622fd6faec7843e. 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/NOGHH2353020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd737a1dc40d2644bf146d7a36117fa44a5271c28bcfb3986d09fd89345e87fb4. 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/NOGHH2353070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123a2bdb03ccc9d2a06b2911ce0d2e90861de34cc52329986a0cbeea6faa699d. 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/NOGHH2353080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x699fb6a42b4eaef44ab5bc369d8c56639f15fa91b4d3cf0fd5de3b7e8c1b6c6d. 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/NOGHH1052010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e2d519f6ba16e4ed6ee04da50ecb109a300384e5ccfcac4725cccb011435bb2. 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/NOGHH1052020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b2b589ce44eb37b70eedf811b4c17b6678e65bb0ce3eabf1aa90325ba26ad6c. 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/NOGHH1052040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0a52b3ebbb85f451d90d2a4fcba3f08cd2ccac915e5f728db6543b35b6deba. 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/NOGHH1052060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe86284c46f2bdf8d35921d5e4e1ce6bd9b17f91a2d779ba5c7e381e8c64a36bf. 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/NOGHH1052080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f589f407bc99f6ae55d260c3c6ec147b4a420fbc67e55c63d777feda0ae5db5. 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/NOGHH1052120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2dd8f1c42649f67534226a8dd00f170b323a80129ef8770164a54c64d842a90. 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/NOGHH1052130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944fd11ef9d2f8541d0cd1f80138d2bdf1ee1a29b935386e0832422970b4a9f3. 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/NOLCA1093110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305e91da0c2044e0e000d7f5df0b9c6fc45cdd307093b7aac3b1818ad7153c92. 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/NOLCA1093130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971982542ca6711dd7976e58ed90cf792bd287c9e97fb9c19d26e233ab88c82d. 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/NOGHH1693010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788bd7c6481f05a2dd1a332b3a99152508477300e0241e1dc2c0ecbe0a110665. 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/NOGHH1693020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455c193e78b5ca84e5f1c62a2c007d5d47038c76dfecd4983cd337b254db01b7. 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/NOGHH1693040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64a3fdac2bab75bd33e512c3e2f90827cd704e8309ce3d48b8e01674339c4fb. 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/NOGHH1693070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb082c555cbaacab5abbd53728184525727c1549aef52d43fc2a96dbd64e5b98a. 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/NOGHH1693080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4293d16adcdea9b8d2a4d70123b0085d94c98518fe8b45bcc6782c32142d8358. 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/NOGHH1693090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57981597665b6e2a5443e466a527ed6387447ceaab3a98b5e52353825f0b6a6e. 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/NOGHH1693100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49949f28144c9fb49a18ae783803eeaa8861b09c6d164cfb22d227f9d18314ed. 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/NOGHH1374020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb72cab6a13112d45bbd97d853f6603ac6a25ae8021afef834299b12869b937d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/NOGHH0835010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19dede188dc05ccb888afcc797d63a091ad119771872d3a456a9763619395db2. 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/NOGHH0835020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b26397ddb79c9cbe747df577b89e4e21b5e15fae50372d33445f5154474a937. 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/NOGHH0835030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba7aeebd614fd0bc630c75802ec416e6037020df9828f65d654116111fd7129. 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/NOGHH0835070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788bd7c6481f05a2dd1a332b3a99152508477300e0241e1dc2c0ecbe0a110665. 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/NOGHH1693020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455c193e78b5ca84e5f1c62a2c007d5d47038c76dfecd4983cd337b254db01b7. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/NOGHH1693040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64a3fdac2bab75bd33e512c3e2f90827cd704e8309ce3d48b8e01674339c4fb. 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/NOGHH1693070.