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 0x891e49d134b2c0bb5c3205ad36202e278e99b875602dafe342ea1f5197cd8ace. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6a70cd1d-4ffb-4d26-af19-85bba745dad0.json and https://artists.proofprofile.net/proofs/artist/6a70cd1d-4ffb-4d26-af19-85bba745dad0.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 0x088d1d1181e6ed66a2eeb4992fc5c0d4773a0cc0f1f60c41ccdebad6a660ef65. 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/NOFVV1060130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c625a54b6d4a413b7ae51b1cd282e1321e073c16369310473bceb1c4fea22fa. 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/BEN581500355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4caae34a4155e814b756cef91a670db6921c3f93c17d4e236a9abc813e06ec34. 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/GBTFX0800065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55bf4d3ee37afd224844062a39e0a60e255dbe736da60d17e6f23a234c31f6cf. 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/BEN581500356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25310c6a60dcca62b57ffb79d41f019c1dba251ab8fc4099da4ea73fd138e41e. 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/GBCFB1304031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6642d2c8d6bd46fb8eedd076b080acceb9b971419d78a1fe549beb4c5f6ac038. 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/NLM791300082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c08430147eae6bf1faf8e1e20fd3821ed29801eac16eac83b7f013b8746a98. 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/GBT9R1400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fcd8604c3b46f0317d61470530a9fdc643aea099cbcd2c8f37f9349c7771aa9. 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/USJ4X0702301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43ed3fd12e698cd9ad0399b07d1d6107d9d5a7a99ad01cef6c3921285e9884d. 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/IT00G1271064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d071879956c33043992f7d65734678fc0a378c86c316007c0aeed3e170ea4b6. 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/GBDNH1200046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0f253aeaa16a2c58e86fbceb333995a891af9986022f522fe565840e880e08. 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/BEN581500370.
Lost In Translation - International Observer Meets Horace Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98fb58d173241d54a54c1002a5ebb32335a7b56418be6cadb4494a8fbce80c0. 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/USA2P0610196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4404313103d4fde44351f9acbe4ebb0010ea5cd3b8470a91c58e0a4adf94193a. 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/USA2P0610198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65bb667fb1aea38657dd2a552df2ab76753a9c1358c813d243bd0bb80ba33852. 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/USA2P0610199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81272d0c9b4e5953fb7d272e6b61fdf95df54670ba226ce58a164888492df217. 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/USA2P0610200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1e5b70f93faadf767632b7e7a7532ff45225a9fb88d116d6436186378f5bb2. 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/NZLP00400110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc0b35be2d2736339b511746370b363878c0e18e02218909d7ecaa53fc8b794b. 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/NZLP00400210.
Black Swandri (100 Plastic Knives vs. The Video Kid Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab2f4ad903851d18aee56acf0cafa1865ecc3c6f152183d1e776030970d525b. 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/NZLP00400310.
Almost Home (Coming Back Home) - Jet Jaguar Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ade21bc2f58a6e836b5651f5ab0c4cb22b99b048d54e45126255efeee988c8. 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/NZLP00400410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb232720e59610f13e673881ad6bd00b0c8666e011a1b44a6ce32a7e2bc1cd2fb. 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/NZLP00400510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b7c98380aa9bbeb9144e6cecee6800395b570f42e2f11065d9497b0792d61a. 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/NZLP00400910.
Hey Son - Mysterious D & Confucius Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5a3f6920b57d75650ac48b66e97ffb224d40e73aa9888244091a6a4ca88d42. 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/NZLP00401310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f2f675611f674d9caa2a31e721a9e2930b687a5514b9d659e381188a28168a3. 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/DEU671900509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6642d2c8d6bd46fb8eedd076b080acceb9b971419d78a1fe549beb4c5f6ac038. 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/NLM791300082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd28a9088dce8fffb6ec585a9caec9161714b7fa7eeb75dded1dbe57244687f. 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/NLM791300083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedbf3a7752f4d63391036ab35237304318e89432a44335064e3023fdb69ae292. 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/NLM791300084.