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 0x46063321e56866b2605f6c9810c276b3478286c4d6d59be1ffd7317b40962bdd. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/66007bdc-1a5e-4f64-aac7-695d257c8286.json and https://artists.proofprofile.net/proofs/artist/66007bdc-1a5e-4f64-aac7-695d257c8286.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 0x5e16a0d1199ee39b9e7f3d320dddb868818509ce76f15a1c1ba0b26efa5d47bc. 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/TCAEZ2045010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86055fce0eb2db326385873a0ffdfdae15153b69de2c9a8bfed0be49a35af797. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/TCAEM1978762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a04544a36f5ac1a906feb045f03cd1a0017e1cd3439e4ca52cd7d34049cafa. 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/TCAEZ2044863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a26b085387cf085aaae2bbb15b8a8a637d28019d550ec3dda28ed60fc7e9445. 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/TCAEZ2044895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31ed7059895ecfb7e69489ba7e1574052e4057845feee2ed128b872b78cc537. 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/TCAER2066124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08496099805e5501ba4c1294338bdaf2e0eb65af6263a01d982c2a69c283c58e. 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/TCAED1997784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2547da1663e306bdd0aba7031605befe2e464cbb07012731b1eabedbf5e69915. 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/TCAED1997786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf855acc3be8998aff959070d069f03bf636fa3f8b97e8e109d8224665e13ae1a. 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/TCAED1997790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d1b9d98102dd2632de50753c464be4af7c4311a0ef1e72f7778584b1c57dd8. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T10:19:27Z), 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/TCAED1997798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf110c74d2deb8430d6e25ebb4d1b02d700e0a60bdfe9ddf9dadab3add2e60754. 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/TCABT1495616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c8de01fcbd3fff4d16d609783e6ea4fcdd51213a9a020eeb937de60c53d672c. 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/TCABT1495692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe558b5b18a2256bfd64973dc4e16506dcd5fc09f1280a1a4a1b6e87c719149d9. 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/TCAED1993757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b0770b054408e906b612539d84c7be7b58d568b12b59a87adbe08e0980c5ee. 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/TCAED1993809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b274a6d0a1dafb58054e96e2a31e6874970ca9621941faffaee9e9349a418fa. 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/TCABT1495627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c69a1293814d7c744de94064b904766214ec8e4a2fccb4d03799de3a20142a. 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/TCABT1495620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13689de37597a104996bf311f558dc5936b2ae985026e713a6ae392c9e16afb3. 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/TCABT1495622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3a2ff13ee6f46d64142e4a82d00d4541cd70e9d07c7bdb7dd7cd4f83d30c1d. 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/TCABT1495623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56af2e4fa3bc790110bf6b9259d4a3403b552cd7c177feb3330f0bcf40635f56. 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/TCABT1495675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0edc2e874603c4b23d51724cf16483ee2b0cc8e1c354fafa1e8864468a27b896. 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/TCABT1495691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a946ecbc95d538a504630cf8f607cb1a044d7ccdf24c98482b488cdb72e220. 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/TCABT1495690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194240e6bad76900802696343840195091f32ae2753d1d4e14f7dff3239e0140. 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/TCAED1993805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cdae833af79264847a00c023ada23136f04ef22ca9fb9ac17f63828cde4f66a. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/TCABT1495614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6668f1915f17d1c0ece19d723c7230de174347f320be0faa92b5c9fd5411f533. 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/TCABQ1392168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec03bbfc618ac40f769232ce4be0cf0207488456add7d6c20c37aec7f120648. 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/TCABQ1392171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74338103dab550c103b6c1b9b42e5f3024ee984f9d2f3914a0aaf2edf77d8f8a. 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/TCABQ1392173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf035c8189adae7b7c97fe81a26c50574610e73fc5a937a5e72c47920fe8ac696. 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/TCABQ1392176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f53ce48fbbb02016893cf3d9a883998e4b42ab9f77283fa2da7b2ddf8e66aa. 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/TCABQ1392179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffcf733e95474aadacf6cd867c883f2c4948965ad57f718f4a69b4ced8ef9d00. 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/TCABQ1392180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f2ecc1844221da27539355777d3e5c58a5a1f58902177a9a1c155fe4b39284. 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/TCABQ1392183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc118ac6374ad240925d06416a2cec2bc951c881333e82379c758b52e42a76c. 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/TCABQ1392184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9184526f37db528ee7022820130ae033056bbc8e0513fd8d1707d0381424fc. 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/TCABQ1392186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e4a7d10d7c3e167dc8e98f652f0dd0fe9435ad258d454314f2abe2a8aa4f83. 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/TCAES2032106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f3b8705d8b05b9fda51b1a40ea0f1b0eda060e4dd7f9cf063e8b375f74b9a17. 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/TCAES2032114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ffcadef75f297e9877d0fb9f606dff8b4281a43e7b22c89c7ec20afad158d03. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/TCAES2033896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31ed7059895ecfb7e69489ba7e1574052e4057845feee2ed128b872b78cc537. 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/TCAER2066124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5811622f67533c614952a67c90e14d9f82f3f884954c52bb7487916c32475ff9. 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/TCAEG1960039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4489330cb7d5dd992de13349d6cc4cd8a32707b372d3173c4cbd37657fbe4277. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCAEU2053906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff94f9e52017db7b88c25c5e2bc3ff1365d22942bd9dc463d30bdb6718938ed9. 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/TCAIA2493106.