1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xff6f6d2c7918b50495b78f093e409d5557d8952c3a196daffc21c7cf36cc9ebf. Chain 2 (Bitcoin): anchored in block 954553 (2026-06-20T11:51:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/abdc76ac-7327-4274-b996-8650d2f11840.json and https://artists.proofprofile.net/proofs/artist/abdc76ac-7327-4274-b996-8650d2f11840.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 → block OTSBitcoinBlock must exist at that height 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 0x90bfad3f05aaad2a5c140198e2ad2d7a4d972c3d5f4643e3ca3484d593f3ec55. 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/USE830921502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf03a4e1b4752a5b22868868667a0b810455e23b9f964e872aabc007cb0490c66. 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/USE830921505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x303bb16dc3b3c9eda261cbd8922921bbce72e2f45539d3e36b264bba3b0255c3. 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/USE830921509.
Teenage Mutant Ninja Turtle (Bonus Track)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34275a4c9b7a7391cf857cedd606d07a7ad43373ca03bb3de0ef9e844b65b5a. 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/USE830921521.
BOCA 1997-1998: Best Of College A Cappella
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e3beb6f09f23cfdac2329e008699ee8738cffeb0609106c83207c6bd0f6cdb. 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/USE830921258.
No Strings Attached (Burbank High School)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b70c0088e6e3d44fdabec68c8ec13a2d293e5b8693d721e4ff243582d56b20. 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/USE830914116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4fd51c73d0e25ae5fc84326831140ea8786622f9059b9ef68ed9096450cb43. 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/USE830914120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3327b6b1f540e557cc98e611502d176327e75c85a908a0aab351d0bd34251420. 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/USE830914124.
University of Rochester Midnight Ramblers
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc269329891bf56ba0038752341a95f941409fd8c6de149295a5b64656ea040f2. 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/USE830900717.
I Believe/When I Fall In Love It Will Be Forever
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04aee0ed713d6ccca5eb66ea20e69665850838e16fa63ca61b74464a931133d. 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/USE830900720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeaf0c27d68eaf32a7c84cab6411ea81722442f1daa600b73398f6aa3031514c. 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/USE830900728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3feeda628bb39bab060c86c3f05d17d2fd4a924034d36a9f0e8c5f9b31afe1d. 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/TCAHD2344087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6506e28175bcedf93429a9393498d1c21158fd0a5e2ab76b00f8ae06409a94e. 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/TCAHD2344177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4018dd90e7599eb64e1328669b7a7eb9a78453e01b941ce44ab500ea77f087a9. 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/TCACT1687554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ce65a1474b687e6515b20e44ac8427640df56bafc2f4aebed0ccf55d6222e3. 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/TCACT1687560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7377500e15138fb4b23f4b1913b82599e6b391bac183cf1e9855a8926c566d01. 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/TCABN1309949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa78029c14464f3e1f38f59146e6d09c1ac93c1ac175f6be777cd11eb534143. 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/TCABN1309952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88742281c38b54b82db68b83424814be15f0f2d6b80bdb8d9479ec0211612cb4. 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/TCABA1174589.
I Still Haven't Found What I'm Looking For
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc4dfc1f29c47c88ce2ea39b02a5ad48ecda7707d34dd1edfc74005b39e747c9. 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/USE830919894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef6d490aa3c60de3f97c4613690eef59fd3310712e78c8c7b865fea3ca44e68. 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/USE830919895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c4e9c806f1ff6e1d02ab076dc9ae230273b8c08913a7172977294af7c9d3ab. 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/USE830919901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30eb7beea23d79ac43582fbc2fd0510787a0836ccaa21e6305fccc642a6c26da. 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/USE830919903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ad93d28a66972867fb78b28b5c5de95b7242ffad0277e8cbf315c953e11b17. 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/USE830919906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb70910cd5afa58f240681d44f57831ba08a2ea0822883df0a9c1e763c32135. 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/USE830900678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x515cf3665deb2f0902d1d55abcad15fb5085674f5973fea9b6e88918fe23ef09. 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/USE830900679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1728e006c42ee53689c82800b17824a3302749d6233f2b96415032b22763ac0e. 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/USE830900681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ccac906ad3a157fba01e844742a8f6c4beb73251bcbbe455ebbb62cfc1ea2f2. 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/USE830900687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf1481f1e035911b75df18e6e1c683eee3ca5cbd3f1899ac3957f2c1a7c2bdd1. 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/USE830900691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7073384a38d39d7dbc3133302f5e041ec0cb0fc6194c7456f3a925ad68d01ddb. 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/USE830921589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefeb3f05494fcd413e2718514ac4fd07ceb0264525d383b7194818c324aa13c1. 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/USE830921590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da5c0e21b7682bd086a454a3072d745c21241ff3d11414ffb2f866d5bb093cf. 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/USE830921591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc39a29d2284cffdacad66f64e0c8b4c550318147df07cde3d4ae1ff58764d8bb. 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/USE830921352.
No Strings Attached, University of Illinois
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a8ca036254962bb6816b2d36931f7f918b935c715377ba3af85c2781294d04. 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/QZ22B1993577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5119cc9fe5df524468a590c4ab8c780386d1234cf283f781ffb050d9830a1437. 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/QZ22B1875335.