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 0x40b411713b141f6d6b315b9303ed420412e276b68e50d16e2197dfa4c112a2f6. 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/ed932853-4b48-42c5-a33d-e76163ef7fd6.json and https://artists.proofprofile.net/proofs/artist/ed932853-4b48-42c5-a33d-e76163ef7fd6.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 0x405af2a3a5addd5de3cc23d9dc807e541c5d6a9ec5b8d8417719657660afb9e8. 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/NLHR52155619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x286965f7acfe1f8155428dd96b0960db449a99bc6ea2638feec0b92c42c7ec20. 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/NLHR52155902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x148dfb0e56f08cd1e860019a08734ddd272d97d1c8f6ca942861c8a38817ff16. 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/NLHR52155868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb9916b801770bcb42a6877776d81b6f51442b507111e484d7bd6085146c926. 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/NLHR52155883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39d7ccdc10899c441bfedd918a7fa881e96a9db5e2c399cdb47d5d740e6b32b4. 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/NLHR52155848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x628d5e384238f14a70b6cd8e9ebe8ca51c0e4c69d90028131b3f86a35cd270c3. 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/NLHR52155625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31e1e2b4a91979e72347b60b98f78fedc59166cb63e4d499421d3ceb41e9dfb. 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/NLHR52155923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027ca762113cb9da24ec22554d05ba17ea315b8fba05024bd1c19d0a0e1a1b4b. 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/NLHR52155895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9dc2c294a37b85590e782fbff6283f1560bca2e48ba650bf098870732ef053c. 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/NLHR52155656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c23b27beea718636357eccac374e3ce12782c7243bff7fd974a592fe8e203a6. 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/NLHR52155624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425ef33639276105404c038d555148e2ff3f82730c0e5b16798d33e6d94961e9. 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/NLHR52155879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ff5ca76ace4449b04e99afea14eb0f80a004bd90ffc5c366c2d356258bb4eb. 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/NLHR52155898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a3bed9eb76acaec13616c56ac14c7162266c106c9707582c5726a6fa01bc97. 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/NLHR52155850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b2ebefc90062e1abd0031d098496f22879635f69a56d3326843686f87a6eed. 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/NLHR52155897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe517b455285582c8f1fb6b6d435559d1e51855374cdd0cc32178dd87809c0b16. 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/NLHR52155677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f1d956140352fcb61f37fbd49247f2d585f9c44924b1ec28946887c7e6a169f. 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/NLHR52155629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x537897d73b6f83fd182190f775b7e8d55a2214fb5c561b0a791529c183217817. 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/NLHR52155631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a897d436400d3ab553a730516c42273ea16e791926f8a4a35b9aec33533708. 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/NLHR52155907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb727403d13e4118dae3b464cb185541e0a3e5c1252d13c79dd0bea8321214e3. 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/NLHR52155894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4068c3586caaa6da74dcc3b4374967ee5c0da494435332cce18669225c57a531. 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/NLHR52155621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2a381d56c0b7ef0c34ffe4b1b24a1560fdf73e1f609a19ace4cc37bf4296fd0. 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/NLHR52155628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf43d6f53674e7d8b55a3e4f556e6c8f1d371c91377b6a437b295900c1591fa. 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/NLHR52155903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15837ece91afdb6ec6a7c66604f2ff331f750a16510e32d5cd033fa5ed86a5c2. 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/NLHR52155878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef10a568510def7723b0089de54522f5cf12819cdc81baa4e24c714d3ed302dc. 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/NLHR52155880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ce8b8f52ed955b8804a85525538268731bdc8090eae33a1caf025f4d7e44a0. 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/NLHR52155896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dfde5330bc3fb280948faa998b7596869dd327afa5b9d5df66b5527b4c0e9c1. 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/NLHR52155906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c75a995b6c244fcf8d507fe85a63407cb8c7360ad940fb919ac547b67a4a17. 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/NLHR52155655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0e82d3dc95a6f94486a7069afb5d530ce1f2ffa956a9f7b4ff44d62ccf7a4e. 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/NLHR52155834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87dfe26208e1906abcb4c1a3ef4827bccda34060ce49dad0eb680b7dafe40a75. 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/NLHR52155615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5361e2bad594c432ce1f46a59470db51c55e34d15acf7b8cdbee05e759edc90. 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/NLHR52155891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2328ed60e41194e4be0bd2965309dabde99efa4db2b241bca5427f811b4046d. 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/NLHR52155921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c41d2b754868e0ad465a5b02caced472957eeb98576034a60603be14f9daf74. 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/NLHR52155851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7cc8ea4ab4a16712a141bf1c16cc115f1e264dee534868064e7f909f38bb3d. 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/NLHR52155866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0c4cebec3a429998cbc2d90d5e16f4a2ce2a6d7d0101e7813d2b8abcbb715c. 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/NLHR52155899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fcfdf64fa61ee0190aa408bf673943f64bdfd14d31ce224c11eabff053eb004. 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/NLHR52155691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d138c9798e2cd18545bd00575a615f2cf5abbb647058244d5a531740dac4a1a. 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/NLHR52155922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c004d18c3543f2fde59ab3b9a429f78713a3ea2d6b27d93fc66e99631ae298. 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/NLHR52155862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e186812a073e85b8843170d3f2d87c39477a5961acbf5e46d0ed7a8d41c2fd6. 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/NLHR52155616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5836f3b16cfb1ccd22c5c3d38841ac59047f7ffcf09de1303db854f3347aafa4. 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/NLHR52155888.