1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x68a3493533e62a2dc9d72010574df95ce94e5d141fbc07725f176cb6559cd0fd. 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/5c6d82c0-2ed2-4a9a-b580-8eca96728784.json and https://artists.proofprofile.net/proofs/artist/5c6d82c0-2ed2-4a9a-b580-8eca96728784.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 → block OTSBitcoinBlock must exist at that height 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 0x40a828cbd589cf94c4827d4e9338689c6ea275c73a086e4e6a306c3dc4677bd1. Chain 2 (Bitcoin): anchored in block 957868 (2026-07-13T14:56:55Z), 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/QM4DW1775497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29918a768da69fe1ba188ca504baf23e67e5f0aa570f7cd57a8ace5ba66d9d1b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QM4DW1775498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8fcc31c37eb71e6333226907e7a99b56db7ad5def0331536903ef3e8eebc925. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QM4DW1775502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d401d0f1063981ae7abc6839c910bf315e87410a4d7be6596a33bc87dd0827f. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/QM4DW1775503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2110f94c8e2fac9d84f72f618902712c3bd735f4576e605af872a6d2148e2668. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QM4DW1775504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7538fe5bae618c7e238d1b72354a3cee0171b90728bc2ee24baa8332dc8be0f6. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QM4DW1791370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f4b3384deef73c7c078dced6052680549394b583e902b419e1ebf589bf5ddd4. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:07:13Z), 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/QM4DW1791409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a420d087fb62ac72ccaf9f4af2d536281e2e3873c74d1af83a4b31b397088c. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZDA61845710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6852118476f55146661b6cf4f90c1517c1ab15ed1635308bf24e4c0a1519b36. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZDA61845713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb08a4ad507c739eb198afe076f91e5c21b241ead5b77ce0451c5421853f76c. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZDA61845717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd65337cd64728a95dbe30bc819ea6b22136c5ed21deaffde758025c675a40d. 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/QZDA61845718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a315040de8020aecc59fe3d1fa5bd379594803b33a3f331cec005cee642df3. 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/QZDA61845720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd4db4f30798656a75588a832cd3c7acbde41449accf866e16d1cc640e7e2e8. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZDA61845721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11bc74819a0bcf5237d64a3a48d7a9a66d54299bfb794dd8ec4451acd990e3f4. 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/QZDA61845723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c5649f00af9e11058d1814893cfce1309022186ee0722176b778945ebc763b. 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/QZDA61845724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9688b6ff03519700457e3ff200764f8440b57a08f36d73c0a447f75449f3720c. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/UST8K1816179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87458a14c3efdecc071b38e5d09ca8d0d1707d4975237a243f3ec6f7ab404d90. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZES81819739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4138cebfb7a02400d03ec5a94562e2e899216b197c79fec981c79f7567ff2d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/UST8K1812529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x956d9ee55b58cc81916fe4166fd0d7c690c5fb6e064de14cb1e489c1b73e8b74. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZAPG1801470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2961d5c1fcff064c06e114240abee6b5df020c9920e89994856412181b0523c7. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZES91838230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x360157cfbc714a3f82b471f981c951712f1d75ad40864c5d244c0f8c5541bb27. 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/QZES61934979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa68f7a2f749815c9499081ddbb3a1eab52ec571ce9b4ae9bccf52a7455d75a76. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/PLR862100122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4fc04e98f7e90cf8104d7194ade44e114f52f5c19b72c875ac9cf86b06c6dd. 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/PLC062114660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd5486c9e87850ed335ff79a509312ef87f64d7dc9888e3fcfef590b91ae4b0. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/PLC062115814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x189e8d4baaa69efdb994e7804e2e4f0e634d2d7252f257ce666abb4a39bd9d1e. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/PLC062116559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd5486c9e87850ed335ff79a509312ef87f64d7dc9888e3fcfef590b91ae4b0. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/PLC062115814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1811309c2b726d4b4b684128a097b1a60bea3909f8e2008388426c0eaf2b72. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/PLC062116562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10105a9ad97dae31da95c901dea4f4e2fdbfd43c2d83c8be4cdfde3a25d65d83. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/PLC062116564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d8c4306c60fd5f704d0e4b45d55092cdf3a5be38419d8414293362f5162cee. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/PLC062116566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cfba04041c0a765d0ca4cfcff7b590eb813caec441af507d08d8a5964279242. 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/PLR862400281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8b2c861c7500f112c1435c2ff8570fbd46fed83048546046b0671cd19dc5bd. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/PL4K02505312.