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 0x13f3cdb7d99b95969067fc79c3619a60e61ea137668b5db48a570a0fed91156a. 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/cc6f77bc-7980-42a3-ba9a-efe7c95d149b.json and https://artists.proofprofile.net/proofs/artist/cc6f77bc-7980-42a3-ba9a-efe7c95d149b.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 0x0e9079b0ad776d353de62f73ccafdd03e8d9cc3289e98a8d8f98af56e598611e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CZA232000226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89eb6c0d21d1973ebc97dcbc78b225c09e84035ad00def789d98cfcb9a78f3c4. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:32:32Z), 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/CZA232000228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301181f7469f27071176beac18397c264bd71c69d0e3f9a6f8e079ca5f16090e. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/CZA232000229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96501511ede87b437608af858a5ed0eb73d51a0faa2f1fd3e4cc174de8e6e9a. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:54:17Z), 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/CZA232000401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2275e155247967886a61993536c0372e2f332b98e62fca89a254eb35d18f7e. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/CZA232001075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86436db6128cd05b4171e0db14448edfb38a78968461678673a606aad009ed30. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:42:35Z), 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/CZA232001247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a06c01d8d7ded4e2185e2e4a3abc2e353a75a9330c7d8f273b81d5fc6b73225. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:33:06Z), 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/CZA232100690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6652dedf81e350c5d1059d60ca3565adf455365ee1e32d4e06543685d896cf. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/CZA232100691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd029fe7a0e9765271d3978fedd040e8d4ac49a3d8a4e9b9a7fc6a22ed151ba8. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/CZA232100693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2207a7a8ff191dab46e4be3262ddd647ae80e2afabe0be2bb2634031f3b7929. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/CZA232100694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc105e655be5b8aa73ff91e82bdcebc5594d27f6f8a3af8e293af92f48981ad5b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CZA232100696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x538edf69b604e8c5eed0e5c399b5eb7f1610f676381fe1d64fe109a39df00e09. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CZA232200144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9129530feb0f7d50cafff30e2072712127f18d4f56eb315b9b7487d8552c9d14. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:19:34Z), 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/CZA232200145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60d254884b92e7a4011a23f2dcfc452b246ca4836de31f34019adaf504bc674. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:23:54Z), 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/CZA232200643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb8cb484264382ae57babbc5f3df25db59348efc275151031124bb69affea35. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/CZA232200905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe744861637f09c145700324c0aab9bf9359c451a687a3591386bea5683f0982a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/CZA232200906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd454ab613fa23e7b1aa43c03c70724a5780ca508d44a0c3efcd2b772f8a1c6f3. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:55:26Z), 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/CZA232200908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ce7fd1fdcd1903dedbd06cf9f6d041ea18a05823f9d259a4658e964f02735a. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/CZA232200910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb742e3cbd45f950234be6c3f70d90420fe589a0a2a06bb2c9c72a3fba3c5d8. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/CZA232300707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa67e937e6da25c5eff68a6fb8e4cf8abbd787c8fc7d1766617b6df792e8aa3. 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/CZA232301507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65547543920bc5e86dcc05ede34e54c757d2407be3b3a5cfd26dc22695c65317. 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/CZA232301560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae9a7f73c92c9f0504c531372c4c354b2c00fa85795c788fc63d62c5783dac24. 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/CZA232301561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa210d3107823563bf7441bea4dc2477d5de006771ed11d2cc1b892c76a5cbe69. 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/CZA232301562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2b8b841540d4acc479a9b642ff199916f4d1f4da5856780c145631a244caff. 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/CZA232301563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf52946dd6674bb16953dea4d74e9140f6b2d86a170e6f19eb81e585d1dba03. 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/CZA232301564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa67e937e6da25c5eff68a6fb8e4cf8abbd787c8fc7d1766617b6df792e8aa3. 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/CZA232301507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a8050cb63d9a993203b017c2810c408081be9b28a4677a52fadcb263267fd6. 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/CZA232301565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8763cc89ebeeb666598ee3eb407db487b54521e28a6e32af6248c163d4e61e5. 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/CZA232301566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x331621258ff860d98876f5ad195dd1e7276b131a50b84972834bff3a97d155fc. 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/CZA232301567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0677a04d5250bbfaec729176fb066d62597f72fc67a40b2f0c4a8441fe462e3. 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/CZA232301568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620927730b04d16ee897a2791264f54406073c76d9c2cbf7318b8260d882b941. 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/QZES62133659.
Rarri vision: A future classical compilation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c1367ff11a4cb723094c4b2fe9a53cc953af29010b3684dabea0f1451096bac. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZMEN2246638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316ca7c5ce87dd631aa5078fde4796c835a824199ebc0d414fe4dd6b691021f2. 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/CZUM72400770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116d675acd90e440dd93cac4053139d3fc4c1df5fe3886eeab8e0374d01e1915. 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/CZUM72400771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a2cb86e2023ff8757cbb9dd49986e63f8b0765a56e68b4d93f073c68c479c22. 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/CZUM72301011.