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 0xb36777c0929f77b807bb5392fa9b6950fcd83399b543bdf163bb04360e0bf006. 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/d5ce5a13-2c2c-41e8-bfd9-ed0f0d245813.json and https://artists.proofprofile.net/proofs/artist/d5ce5a13-2c2c-41e8-bfd9-ed0f0d245813.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 0x418ec3a90227be90d0aa2c887fd0dbcd669f20042c173668469396edeb5a0808. 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/GBCKG0701478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc264a9715ea6a1469fb0cf8ffa7e25a60369730d40f3518ae87408375a52b5cb. 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/QMEU31619411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42dcf42eaf877c3f1f3a05bb39a8c6c57627d1440e02fe071d2f887230c94c1e. 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/GBCKG1300282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e91211d3e9aa7a548d5d682da1d48d2a988e52aa146fcb605012bbf671516e. 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/GBCKG0501580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67b94d64dcec0e944c143b973b171ef72b62e72eb518db0dbb3cdcb6315ef21. 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/GBCKG0501634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd73899d1d3d0d6e37c8bcc26aef4cc9bda0f256546d16c36bf578973c727fa6a. 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/GBCKG0701484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a97cb1a1ac4f893aacbe44d39972de445f10fb896f89ed9ccfbc3e1b16fcae7. 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/GBCKG1200179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d610875a4b8b90a185201af21ffed45d5eb5591a32d44402ec44852df9c5295. 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/GBCKG0501584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616d6e9409095772b3875f14b661888499ef4686bc53071dd81cddea0a56e455. 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/GBCKG1200186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc82ef88f1f28e801d4ad8f5750c8b76565cb4e1c3956219b051307daed03fdf6. 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/QMEU31619407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d15ffdb62143234535be15d216bf30916c8d78ca05f678abc1b4249dcfb8679. 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/USWS42123301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x355742cfef03e633d18cd52bdb095427de26c2cb76cca258c9534aa36a69cb11. 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/USWS42123302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c649cd886c915ea0f96aeea39fde6a557811c89ecad3429d9e0800fcba88e1. 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/USWS42123304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218c5385ca3a191b098793ad6b692dd8cfa4b694a5daef26e00ca90ee94812e9. 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/USWS42123308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32770d97f79f06a12dcaf0100974feabf5b0b8698310843d60cf9831881b5160. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBCKG1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6559693204ee61e6c826820e1d6f058d9b476b34265976317a0d6307b412f05. 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/USWS41112005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4531b42c100660b39880175db088144f20adff1811cb3da8e9b182e50f6564f7. 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/USWS41112004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc264a9715ea6a1469fb0cf8ffa7e25a60369730d40f3518ae87408375a52b5cb. 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/QMEU31619411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5128df2150d43d3c492c0caa0319b5a506ab29304b7f7f07c9831bad6c327807. 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/GBCKG1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eee1e3beaf28bfc050de91a4ec778b75d56cf6f9c10695973f7d46eeea85f45. 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/QMEU31619409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45cef316b6b54f583518dd4dd5a248ef1c8384abd827380eb7e2203d7935c6e. 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/GBCKG1800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5df1c2618957614312cc9316fd5358efd907550c65541cf07fa6344274a2cbf. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMEU31619413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x204fb3607310763a288f5a11a78bc73d1f8d3290db3f7cc26743e04fbbca45a1. 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/GBCKG1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc82ef88f1f28e801d4ad8f5750c8b76565cb4e1c3956219b051307daed03fdf6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMEU31619407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5106409e53b6eebc264758aa270e59fb1583ddf616c8204c750604cfba2bb2e1. 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/GBCKG1800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57df489bc4f372ad5ba74787b66721ba647f55f46b7fdb4603f4c4063b036d5f. 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/GBCKG1800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff41dcbbab1d69b71f95bc2819d6982d5332eb1f46960c12e8baaf5f6da22d9. 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/GBCKG1800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0f8822ad4afd6bed0b9deb9d626a6fadaff2048b43bd4350742a2a62f99f9c. 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/GBCKG1800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4780ac1f159d63334d95e93112950b8b95b7d670a1ee14df0e4de23e593fbbb. 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/QMEU31619414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39d659d468a129a1c66b568fcb1c77db1669a3b27c6920d989d51663de9a0e3. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBCKG1800009.