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 0x9e04b5665147cec9c4b2690f908eae23ac68ebeb2ca1ab49d150a639ba43106c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/16c23d3d-d32f-4448-be03-b68527b01968.json and https://artists.proofprofile.net/proofs/artist/16c23d3d-d32f-4448-be03-b68527b01968.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 0x265984855f280bc0725064e68f8f050ea923423361e763e5f22779535647fdd6. 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/BXAKD1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fc6ae3808d05dce45307545adf6aff641cffcca2b2d8084adebc7a39e4b661a. 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/BXAKD1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf8b8c448e941a0544443bb1ffc3d8a64e6987ea9fefd69fead6010ac3b58e2. 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/BXAKD1800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9776c3f9797695f99bce89a7b5b63b2f661fc9ecc00bb198b7f32e7f2380414a. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/BXAKD1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c9c3da968cfa571f243296de4dae5eea4c640c058a4a50fbb7cfadfd5c9b12. 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/BXAKD1800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb80fd658ff298d16372561e0874c783f153815cef766224a0307abe1b9372888. 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/BXAKD1800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c03ff12774ade19bc8094bbc1f5bd8384ffb03805bf6b94dd7d3c9cd16d179e. 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/BXAKS1800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356ff8445699cfda8d5f090e8adb7150e101f87c10a05100eaf18e1ecc32301d. 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/BXAKD1800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9460566b65879f7cd21ca1694864f8278da95c576b8cb230e2642dd2d1ed42. 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/BXAKD1800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3388888b4d3f6ce9c135f6b47cc6ea1ef3e92fb3c52eedcbf43ff1b74d2979. 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/BXAKD1800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5231d4b5590cb0dda96f487c8ac7f480d2cc8d513bbcc99486b6857732b7d099. 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/BXAKD1800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc007404ca41f09c7cd63b1854e34fe5e04343262192e3814605c5145ee455188. 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/BKS542400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa88932baaf666d68c1b3d141a7abc5d8d9d1bc47e45e89ce6addab1a3608549e. 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/BKS542400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfab9acc2e5b0adc9d95d01d6ef552254833190de5405efd336a6266d414f738. 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/QZNMW2476266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dbf158f0e1df41c9f353be65740911f3547c895e5b94f2fb83463df02ebd836. 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/BKS542400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03aed0283d79cb98892b9630757547705f1e232853d524c3d28d0d5b55a806e0. 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/BKS542400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a808e60c761b7cefd9e177d83a3c6f005b6b68bff439baea8a63f3085b5e65. 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/BKS542300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03fb2617d7690ac1471404611659d3b01cf87a4889d3cdd43d4f60e5bfdb9dfd. 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/BKS542400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd45eba5aa0140cc8f5dba4c0d011623873cb6515943f9337c0b048b3bcef7f3. 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/BKS542400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf574d0d0541d4efe77757abf53ee7d04a0e00561c2bf33be08ebb5d560b8f1a8. 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/BKS542400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e2b21f4c47d17eb30545c458102046498501ae837b053fdcca14430d541e8fe. 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/BKS542400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x838ef90e687f68075a00b31eb5022dae3032a0b208ba1a36246d5fc9f8f80ce0. 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/BKS542400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeebc24f9f13c02ca95de539a6501b5577006d259dd9dd6b59e71a834513885e1. 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/BKS542400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00cde610ec05e48a18916d1951bcaf1f45281953a73cd36dc479acab42eabdd2. 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/BKS542400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245d60f9bdf19883657e23fadb5b17c4e0efe39bfe60b76aa0824b99f83957c6. 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/BKS542400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb851e5c508adc3de01b66f876ccfd95555ac75188adb831e092f629366335f76. 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/BR4IW1300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd025acf95ae416fc50f01925c67789852e29d5679846828de7f0e90950b21a1. 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/BXAKD1600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0c268b7b7e721191291c14abdb8327e897553238c051ac3b161ecc482cc26c. 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/ES71G2425590.