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 0xb77fafe65a8a06413b1f46466a2c5b6e0e7dad81dc934e142ab0c33f7b34621b. 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/f0b3198c-3d06-4f9d-9d34-7208700c7770.json and https://artists.proofprofile.net/proofs/artist/f0b3198c-3d06-4f9d-9d34-7208700c7770.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 0xe41d0e89ac17dc7ea7ee2ac284ac0a20de15c118040c624d6081dd36c5724c84. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QZK6K2046091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ccce54872b668a9cb0e4ec61e3712e4cb5aefefcdf51bf209d696291ddc1a08. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:42:50Z), 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/QZK6J2015873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabd4f778c1caf9c3099aab5a91fbe7ed378ff0916bb55770159b8dcdff1c833c. 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/QZK6J2015876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0fa88f12d1092a423982796f69550cdde4533fc09a3672fd093681e9a6685b6. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZK6J2015877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a42aa35d63170ff36b611957e492ec77145f7261771dd819e247cc01a58be9. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZK6J2015879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd5d51cb50c5a4a0df02b9f643cfd83bb0edac569deaa9d897c077798277059. 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/QZK6J2015882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8045b7ae9a3d3e0f1af527d2a99273af4d8fd0fae36d782fe477757ef8abaaed. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:42:07Z), 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/QZK6J2015884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f346511072439e1fc1c298a2b452c98f39a004e8eb72b3fafe9e5654b9878aa. 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/QZK6K2055618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e488ed83fa7f942c95182f0bec35894858defb984f3bcbc2ef228264c773a9. 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/QZMEM2069718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b484bb54237ae13c90f25951df6c7541c1122caf99a0395138bd0eb13955dc. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:06:52Z), 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/QZMEM2069689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f7ad1366187ec08d012687c82ebe2292f75241737b149ccbf0c36bcce11e4a. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZMEM2071748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x723c5a2f48e5a1b6cbbe7ee66db7d9b6e5ab75f4b165da1cf0aa4f7c22eb2391. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:03:45Z), 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/QZMEM2071749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58660b2c4107941ec8fbce408248a6a3bf341901bce469d3dd8a89fb3bf68082. 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/QZMEM2071751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ba6a8bec7b511fd76233c09ae978b0716cabe7baf50dd45493c3a155340b79. 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/QZHN62195167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x724621d4f1b8e75a944431a97caa94d1800bd870f5b311e2d5205afeb4afa904. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:46:06Z), 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/QZHN62195169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a10d2b201d3b6bfc5928fdff7784b7890b74b32d35de97a998d47db2f7de721. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/GBRKQ2142081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2e9ff1ae2b5e85f3f0edbd9bffb295f79048977cc7a159a1ad684acbb9c831. 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/QZHN52208548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd950a25d24f77d1ebd40dee259039454757f76b8771ed114595631a2b78162. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ING212409809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9363ce6e29006c661de3ce074108dc7feaa086b22c517e2be290ebe115b051ae. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZGLM2578689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf248bc5b2913ae2e9e669d9cbe4e0d64eb2119f7255f84924459419195e1a6a4. 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/ZZA0G2401115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14da3c0c12655e56f0864661aed3b1271fcfc649fa33f3446f03b85412515e3b. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/ZZA0G2401111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb051bb3919ad687804fbd49ee30c17b7b8dd066fd09bfe49c992b5cffad5ffca. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:05:49Z), 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/INJ562400082.