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 0xca98d8b672eec51e9143883ade577adc55dac38f1f087c66c3a3037c33dbe3c4. 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/927c876a-6fe6-4762-8218-bd26f2204fa0.json and https://artists.proofprofile.net/proofs/artist/927c876a-6fe6-4762-8218-bd26f2204fa0.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 0x039b94141f8b082cf24ffc8e3e2ced05a1fe46fd659cb0224e5506e51df6ac9e. 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/QZES62430643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f10a6666bbea740c9f007dab86df40135dc8a8093a0fc876c8b5a731370088. 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/QZES62430644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c38d89491036594b10cf4f2eb05bbfa835828f1a91e271602ce7e403bee1c59. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/QZES62430645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1588312b13a1e4462d06514b94ea942053e1ae1315f8e2defa9cf926fa93617f. 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/QZES62430646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78da042f0e15d6e7b9bac07ecad02c899ffc4f6b726f9bd56372fbc231f74138. 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/QZES62430647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa438120ca4c6aeb75d2b8ff31dcce1a485bc594c8ea5881f25f2663eff457b. 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/QZES62430648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f7bece52f08f7559aaef9c3cdf589f64d99fbabce6a327f269b2d2d31b967b4. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QZES62430649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff765cf9611bf5e727d22cab1080ddfb78db79fbd6e8ab4fc87521d0961978b. 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/QZES62430650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e8424ef58e24ad6860de6a66586a4faefc73a628b4a3e998cf6d341f16e5069. 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/QZNWV2403780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8019c35440d9d3124ed43186f396c089465b9fc179302e0f75e90547abc502. 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/QZFZ22462782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd2cd290551f0860f0395b54b2a0057d4bc8e5885d68b0c3f85a39d77eac065. 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/QZWFJ2314971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9949af193e6b97360f760c297b066df3b2c1aeab096e17941312a9f4fb148eb0. 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/QZK6J2303946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17146e6920b7c3bd5d4b56770ebfd2347b585290d1b701eb18a31307e95fbc93. 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/QZHNC2365864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53705daa85991bcb6285892a5c0e83924e0fcd9073d8e7d216054735828ed8b. 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/QZHN92354579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666a24c812e78b26fc6a1eb6dde1b32041502bf921e69ff3871d432279517064. 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/QZFZ32300115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ecbcf125d9311b9102e077c0f2eb5cc7a014d71c9fe4ced614c3ba0dba3026. 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/QZTB42294646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1441e2e5a16301eadab20b31fdc220306fe5862ba7353d3c4605fb1714aa429. 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/QZTAX2245675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58962f267fc1aef7c2d19ce868b4390c34bb1bc501cc26ecd0b2851647e799eb. 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/QZK6G2298653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93dcb81c151f296d131f26ee0873daa44be2bd0796310cabd6f501281957367b. 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/QZK6J2258384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc87e9f07a8fed43317efdd685200923c04cb3e7a297e9394e1c30ea31e7fe237. 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/QZK6M2263369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2aef2875e81a1b03e3add4f17efd9986197eb6e9c6af27147b8e3978bb4f0a3. 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/QZK6P2291749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612f167020b31fb8c60dbbac8b7decb5addcb6486169f1e3da2f35aba6f7e5f7. 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/QZHN82236132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6edd2fa1397986604e3aa9879c789e9327dbc44e867ef56066c7c416693e351a. 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/QZHN32215571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de80577fde35c4117f9360a380c72ce2e7da015467a9d2e318f14c435b57165. 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/QZDA82239843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe581d2c98a4350a737773f79dcfa52bb6f2f3436829db3e6a5d1e792172beea9. 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/QZTAU2143366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab5f79c84e85461f043aa00ac1221d9f421b6bfc668e0444f8df1c0b67a68b3. 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/QZNWT2133861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece9e7cbc53a1f13b71a2321b0d6e9dce2492341a8965de7d0c19c92263651f3. 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/ES71G2132163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10d78dcfed9fa8d06e53493eb9a3b06b477ea404e874815aa49f8c4ab7443a4. 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/QZHN72131329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe193700b165178488012862142647fdac53950f544d47cd713676f2f0f7a02c. 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/QZDA82197237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38fbe09c8a4d43b742cb8cd8a12208a9ce3fca5d9ead01cb115f822adf79fc45. 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/QZFZ52174824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e414e044d0c3d00f20842e5071f5208bdddf06881327db7a6192f60f7ef501. 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/QZFZ32170345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a40ead0e9816b383bdc38b632692c9bd58819fa7b74368286cc9a3a27ce78f. 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/QZFZ22168033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x091a931c95a6ab6015fd915f299d8fd564929695bc8a7ee85842645e0b9f93bd. 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/QZFZ22144812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e1cfd2a217fb112f8a83814e9d16037f1ba9aa003c2585c7dfdbe6306fc1fa. 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/ES71G2102478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ee11feb6a0a6214c88123fd41409f9868faf11cf276d873b172cd8a4f1defa. 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/QZNJX2079078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53cecffd2ffabdb394ceac43985a84961c85c0ce42a22ecfe655c4f7ead36a3. 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/QZNJY2462036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734ad503110af2eebb8c7e1191159f357d2b840b00811a33e94d0c35fde60c3e. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZWFM2423692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c25bb2d0e054bb114e576910ffe5aee7a84b0eb4110ccd78161dd6aab491cd. 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/QZWFM2423693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7849e0037c313783147c7bab7730712f859c96e2aacd8e6753bc5a26276e037. 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/QZWFM2423694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4c12cfed4b8c8580a9be116d1c62b691d81924d2ac8cf933a91b5be51ec484. 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/QZWFM2423695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3928f275122bd4da2507334c82288eb8a337a9abafe7c5312fa4b37dd86169. 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/QZTBD2434735.